8m Solar-powered Street Lamp Used for Pathway, Fans for Tucson Expert Solar

Solar LED Light Fixtures Manufactured in the US Overhead Solar LED Light Fixtures. Overhead solar light fixtures are perfect for highways, freeways, neighborhood streets, parking lots, rural roads, parks, boat ramps, pathways, perimters, jogging paths, security lights and many other applications. [PDF] Figure 3: Turtle Mountain Band of Chippewa Street Light Path (www.googleearth.com) 2. Street Lighting Street lighting has been around since humans began living together. As early as 500 BC, the ancient Romans used oil lamps filled with vegetable oil in front of their homes. In 1802, William Murdock used a gas light fueled with coal gas.

Can a 120-volt standard lamp be converted to run off 12V dc?

yep as long as you have a 12v supply and a 12 v bulb, wireing dosen,t care, screw the bulb into the socket attach the 12v supply to the plug,

i have to do a science experiment and i need an household alternative to a heat lamp.?

Ordinary bulbs give off a fair amount of heat

can u keep snakes in garages if the heat lamp is kept on all the time?

yes,but you do have to have a heat mat under the cage because, the heat lamp doesnt provide much heat. snakes dont need a light but you can add them. i feed mine about once a week

What kind of lamp do I need for my turtle?

i think it depends on the breed, i have a horsefield tortoise and his heat lamp is a 40 watt and mines is just regular clear colour not red or blue

Do goldfish need a light above them like a lamp?

Goldfish Light Requirements

Puppy whose cast was removed must now wear lamp shade like collar. How does this work for eating, sleeping..?

placed it in a huge, black rubbish bag. upload a million to a million a million/2 cup yellow corn meal. close the remarkable of the bag, and SHAKE. Shake the bag somewhat hard, for as long as you may. The gentle abrasiveness of the corn meal gets rather some the dirt and airborne dirt and dirt off or loosened. once you are completed shaking it interior the bag, take the coloration out and vacuum it properly. This technique additionally works properly for synthetic fabric/silk vegetation.

can my beardie survive without his heat lamp ?

He will get sick and eventually die. They bask in the sun for a reason. The heat gives them energy and keeps them healthy. You really need to invest in a heat lamp asap! Its been months?! Wow! You could have saved enough money by now

how many watts should my iguanas heat lamp need i have a 50 and a 67 watt bulb but i dnt kno wich 1 to use?

I would use the 67 but only during the day and at night use a heat mat or a black/red bulb. I would recommend getting a higher one maybe 120 watts when he starts to get larger

How long does it take an electron to travel from the outlet to the lamp?

like .oo1 second

Is a Coralife hood lamp with a 50/50 65 watt bulb too much light for a 17' deep 30 gallon tank with plants?

no it's not (too much that is)... change the bulb though.. a 50/50 wont really grow any plants look for more of a 5,800K or 6,700K

Should I get a lamp for my small betta tank?

Hi, I have a beta fish myself! I think the best thing that you can do is put it in a small/medium fish bowl rather than a small tank. The one I use has colored stones at the bottom (marble like) and also a fake plant. My fish has been living for 5 years and shows no sign of being sick. This is a better option than the tank, because the light could be harmful to this fish. Also, try to avoid placing the clear bowl near mirrors/reflective objects, because the fish may grow hostile at the sight of it's own reflection! Good luck:)

Is it possible to change the color temperature of a linear fluorescent lamp by dimming it ?

what about using coloured cellophane it will resist the heat of a flourescent and there are many different colours to chose from as well as how much is used along the length,its difficult to dim flourescent lights but not imposible with special circuits-as much as i know?

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My Lamp Post Light Is on All Day Long, What Can I Do?
try a light sensitive switch...adjust to daylight so it will turn off when the sun comes up. Oh your electric bill...100W at 12 hours times 30 days times .10 per kwh equals $3.601. I put in my first CFL light bulb into my lamp. It's 27W (equivalent to 100).?Those lights suck. Especially if you buy the real cheap packs. like 4pack for $5. They never last that long. I think my record is about 9 months with regular use. I recently went to LED bulbs. They use about 7w for a 100watt equivelent light source. They are about $20 up front, but they really will last the long haul. . Also the CFL lights cannot really be handle having less than the exact power imput required (Like dimming is out of the question). LED can be dimmed, flicked on and off, just left on, whatever. little power, lots o light.2. Who knows about T.Capote story A lamp in a window?In 'A Lamp in the Window,' a sweet little old lady who offers Capote shelter on a cold night turns out to have a freezer in which she's preserved the bodies of all the pet cats who have ever died in her possession3. I bought a lamp made out of lead crystal. Am I endangering my health?if you are overly worried about it, bring it back. if you put it on a table and like it,keep it. if you are hungry, do not eat the crystal part of the lamp,it has lead in it.4. Can plants photosynthesise in artificial light i.e light from a lamp?Providing the lamp emits UV, yes it can. Hence growers of cannabis, have huge electricity bills.5. I have an old steel clarinet that I'm going to make a lamp out of. What can I use to clean it so it sparkles?If it still has the little leather pads under the keys you need to remove those, they will mold and stink and start to fall apart. You can use a product called metalax, a mesh you pull a bit off of and polish with then rub with a soft cloth, or many old clarinets were not metal but silver so you may try a silver polish. Bet your lamp will be gorgeous6. Can I light up a 220-240VAC, 20W, Energy Saving (PLCE) lamp with 24VDC incoming supply?Rhyled is correct. You do need an inverter if you really want to use that bulb in particular7. three men find a magic lamp a cliff...?I would not want to be that third guy. But at least he had something soft,all be it smelly, to land on8. Is it possible to run SVN Edge, LAMP and Samba on one server machine?Short answer: Yes. Go ahead, install your favorite distro, use the package manager to install all your various servers, and have at it. Samba is often already installed for you. More important answer: Everything about this is good, except this part: "able to access it from anywhere". You do NOT want to open your home network to this. Use a VPN, or better use an ssh connection.9. Name a type of lamp that provides perfect lighting for a small bedroom?Depends what the bedroom is being lit for... A simple candle or a bunch of them...? A small nightstand lamp...? An ceiling fan with 4 bulbs that can change the number of lit bulbs...? A light dimmer switch...?10. how hard is it to change coolant in a rear projection tv LAMP?HI TV TECH Rear PROjection are the ones that have coolant as yes it is very time consuming First YOU have to remove all 3 tubes red,blue,green. then you have to drain the coolant wipe the lens off THIS job I would leave to a professional.......11. If my python's vivarium has an under-tank heating pad, do I still need a heat lamp?well u ahave to remember ball pythons r weird but like to let mine go outside a lil but if he has a reguler rock put the lamp over the rock & use 80 watt bulb for 20 gal but make sure he has water to bath & help him poop
Powered Street Lamp Solar Working a Solar Street Light Ezinearticles
22/06/2020 solar powered street lights it is not wrong to call solar energy the new nucleus of the electronic world. This configuration makes sem integrated lamp cheaper and easier for installation that is suitable for rural area. On the other hand, from environmental d economical uses far more energy during its operational life S olar street lamp is a lamp that utilizes solar cell to obtain electrical energy during the daylight hour by solar radiation and then stored in the battery the energy saved in the battery is used to provide light o n are each component, i.e. lamp, solar cell, controller, and battery, separate from each other, as shown in Figure 1(a). For the measurement of the solar stre et lamp, t illumination of lamp was measured using lux meter. view photo of solar street light, moonrays 95960 tiki themed outdoor solar street light garden , led solar street light.contact china suppliers for more products and price. Mars solar powered street lights use advanced technology controller,it do not need to open the solar powered street lights by switch. Classic All In One Solar Street Light | 5 years mature The Classic All In One Solar Street Light have developed more than 5 years, and the product is a mature product now.22/06/2020 solar powered street lights it is not wrong to call solar energy the new nucleus of the electronic world. with its ever increasing popularity and unprecedented advantages, solar energy has found innovative applications in many fields. a lot of damage has been done as a consequence of the emissions of greenhouse gases and now we must [ ] so, solar pv led is an ideal combination for outdoor lighting. this paper explores this combination for street lighting purposes. depending on the yield of the solar pv and the traffic scenario, the intensity of the street light is being adjusted from 0 to 100 automatically by making use of a dc dc converter. working principle in the street lighting we have the charge controller circuit which is charged the battery in the day time by solar panel and by conventional power at night. this switching between conventional and solar occurs through the relaying action. the relaying action is done by two not logic operated transistor through ldr . photoconductive device ldr (light dependent resistor) whose as most new technology does, solar powered lights have had a rocky infancy. there are a lot of lights on the market that use outdated or incorrect battery technology. many use low quality components and have high early failure rates. sunna designs solar powered lights use well engineered and field proven technology to light the night, all night. the functioning of a fonroche lighting streetlight. daytime the photovolta c module captures the solar irradiation and converts it into electricity. this energy is stored in the power 365 battery.. night time the battery releases its energy to power the led fixture according to the required lighting profile. our anti blackout technology ensures permanent lighting throughout the whole night. 7 reasons why your solar lights not working & how to make sure you place your light at a location where it gets direct sun light. normally a solar light should get 4 5 hours daily direct sun light to effectively charge the batteries and shine brightly during night hours. 6. test the lights with alkaline (regular) batteries. most newly purchased solar lights come with rechargeable batteries. 14/09/2020 avoid placing your solar lights near street lights or porch lights. when solar lights are exposed to high intensity light in the evenings, their sensitivity will decrease over time. for best results, place your lights as far away from artificial light as possible when using them in the evenings.(PDF) Development of semi-integrated solar street lamp for rural areaAbstract. A solar street lamp is a lamp technology that utilizes solar cell to obtain electrica l energy during the daylight hour by solar radiation and then use the electrical energy to provide light at night. Sem i- integr ated lamp tries overcome complicated installation and expensive price of normally solar street separated using cable. This configuration makes sem integrated lamp cheaper and easier for installation that is suitable for rural area. Therefore, in this paper we - The illumination of semi-integrated lamp was measured using lux meter. The power of the la calculated to meet the energy needs for 12 hours. The results show that the semi- with low power LED 2W has been successfully develop ed. The solar lamp can be automatically tur ned for around 12 hours, from 5: 50 PM to 5:31 AM (UTC7). of th e lamp is 17.42 lux with 6. 97 lux deviation. The measurement result of illumination shows that the solar street lam p has maximum distance of more than Street l amp is a necessary part of every part of the street, with a primary function is to provide comfort to t he driver and pedestrian. Street lamp also has a sec urity function that is to prevent accidents and criminality. On the other hand, from environmental d economical uses far more energy during its operational life S olar street lamp is a lamp that utilizes solar cell to obtain electrical energy during the daylight hour by solar radiation and then stored in the battery the energy saved in the battery is used to provide light o n are each component, i.e. lamp, solar cell, controller, and battery, separate from each other, as shown in Figure 1(a). However, the lack of this solar street is in need of a complicated installation. Different from all the components of each la mp, as shown in Figure alth ough the component price of this type is expensive both problems, that is expensive and co mplicated is separated using cable. This configuration makes semi- Therefore, in this paper we new type solar lamp. For the measurement of the solar stre et lamp, t illumination of lamp was measured using lux meter. Furthermore, the power of solar street la mp was calculated to meet the energy needs of the lamp for 12 The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons AttributionHow to calculate the solar street lamp configuration_Ningbo Exquisite Electrical Appliance Co., Ltd.Can calculate the amount of electricity to be sent per day. Case: In the middle and lower reaches of the Yangtze River (peak Sunshine 4H) Beautiful countryside construction process, installed 30W LED light source, every night Lights 7 hours, to ensure that 3-4 rainy days under normal lights; we calculate the power consumption of this configuration first: 30W LED light source, solar street lamp, normal to make 12V system, It can be concluded that the current size of 30W, 30w/12v=2.5a current, power consumption is 2.5a*7h=17.5ah per night, if there is no Sun guarantee 3 to 4 rainy days normal lights, the size of the battery is 17.5ah*4=70ahbest integrated solar street light used in communities(2)solar panel is the longest service life of component in the solar street light, which can be used for 35 years. and in use if it doesn t rain for days, the surface of the solar panel will gather much soil dust, which will affect the power generating ef ciency manual cleaning when necessary. high strength aluminium alloy shell all in one led solar street light 50w picture from shenzhen hxxy technology co., ltd. view photo of solar street light, moonrays 95960 tiki themed outdoor solar street light garden , led solar street light.contact china suppliers for more products and price.what is the principle of ufo solar street lampSolar street lights with is components and working principle the working principle of solar street light is very simple. photo voltaic solar cells convert the radiation of sun light into electrical energy. this conversion takes place by the use of buy outdoor lighting accessories online in kenya at jumia kenya. shop from a large selection of accessories for outdoor lighting at the best price. generic newest 500 lm 48 pir sensor led solar street light 50 watt factory led pir motion. ksh 1,690. ksh 2,360. 28%. 4 out of 5 (1) generic 22m 200 led solar lamp outdoor 8 modes garden lights solar powered holidayIntegrated solar street light In ThailandMr.Thanya is from Bangkok,Thailand. His company mainly do kinds of goverment projects in Thailand. This time we want to buy some 80W integrated solar street light, provide samples to goverment for test. Thailand have good sunshine, and the electricity are expensive. so solar power system,integrated solar street light system are widely use.We have a lot of shipping company contact,so in this sample shipping. Mr.Thanya only need to wait in his home and the integrated solar street light sample will arrive. He was so satisfaction for the service from Mars. After he get those integrated solar street light sample, he was so confused. How to make this solar powered street lights work? Because it do not have switch in the lamp. After talking with our sale,he know clearly that.Mars solar powered street lights use advanced technology controller,it do not need to open the solar powered street lights by switch. Just let the solar panel face to sunshine,let the sunshine active the controller. Then in the night time,the light will work automatically.Now Mars solar powered street lights have passed the test from goverment. Just wait for the solar powered led lights project budget to order big quantity.All in one solar street light | Factory Solar LightClassic All In One Solar Street Light | 5 years mature The Classic All In One Solar Street Light have developed more than 5 years, and the product is a mature product now. Please rest assured to buy. youngpower motion sensor lights outdoor, 56 app control integrated solar street light home | outdoor with motion sensor wall light solar powered security light spotlight waterproof 360-degree for wall patio porch gutter, 1 pack. 4.4 out of 5 stars 667. $20.99 $ 20. 99. 5% coupon applied at checkout save 5% with coupon.How to adjust the time video solar street lampsThe factory with cost-effective solar street light? Got a call from tongzhou customer said in the morning want to dress factory installed two 15 m solar energy lamp, want us to check the price, that is both convenient and do not have to pay the electricity bills, it's a good deal. But our sales people to listen to theled solar street light circuit diagram system design pdfDesign of such systems which have efficient applications do not only achieve energy saving but also extends the service life of street lighting equipment. Energy savings in public systems are discussed from different viewpoints here. Index Terms- arduino, led, solar, street lighting. ---------- ---------- 1 INTRODUCTION We need to save or conservesolar street lamps factory the pros and cons ofTwo ways teach you how to choose solar street lights Apr 10, 2020. The quality of the solar street light source directly affects whether the solar street light can work normally. I hope everyone can learn to identify the quality of the LED light source when selecting LED lamps. 10: Pros and cons of solar street light poles: Good solar street lights need high-quality light poles to support them. details about 1500w/2500w super bright solar lamp with motion radar pir motion sensor wall lamp w/ remote. 1500w/2500w solar parking lot light companies in Fiji radar pir motion sensor wall lamp w/ remote. item information. condition: new. 6v / 15w polycrystalline solar panel battery capcity: 3.2v / 18ah li iron phosphate battery Get a Quotesolar street light advantages disadvantages and uses oilAdvantages and Disadvantages of Solar Power Technology There is a lot of benefits and bad effects of solar energy for you, here in this article I will try to discuss all one by one in detail. 1 st I would like to discuss the advantages of solar energy technology, then I will be proceeding to the disadvantages of solar energy technology. china ip65 20w 30w to 200w waterproof solar street light in led outdoor light bulbs, find details about china light bulbs, solar light bulbs from ip65 20w 30w to 200w waterproof solar street light in led outdoor light bulbs - zhongshan shangde 80w outdoor adjustable led street light solar with enecs co., ltd. solar street light, bosun high lumen outdoor ip65 waterproof motion solar street light direct from. gebosunthe importance of solar street light green building canadaMaking use of solar energy is at the heart of sustainable building. In designing a green house, solar energy comes both first and last. The goal is to create a house that consumes at least 50% less energy than one built conventionally, with a corresponding reduction in heating and cooling costs.how cities are using solar street light to improve safetyParks can use SR panels for their playgrounds and sport courts too. Bike paths will benefit from the LED lights of SR panels. The lights can provide lines and signage just as for roads. Lanes can be created if desired. At night the lighting will enhance safety for cyclists. If desired, lights can be turned off unless they sense a bike. hitechled smart all-in-one integrated led ae6 solar led street lights solar lighting, off grids illuminates tawi-tawi island release time: march 9th,2017 . with the growing concern for pollution, dwindling natural resources and dramatic climate change, we need to find other forms of energy sources to adapt to today's business and technology demands. hitechled is determined to contribute to environment preservation byTips on How to identify genuine solar street light componentsPaying so much for counterfeit goods is never a good feeling. You end up wasting a lot of money and maybe disappointed with yourself. Street lights are no different. While they make the night more beautiful and safer, purchasing fake components will cost you dearly. Today's market is full of conmen eagerly waiting to prey on unsuspecting customers. They have mastered the art of fabricating original products which can only last for so long. You, therefore, need to be extra careful when purchasing such equipment. You also need to assess solar street light components to ensure that all the parts are genuine. This includes the solar panel and battery, light fixture and controls the mounting bracket and the pole.
Buy Column Post Light Vintage Metal Pillar Pole Lamp with E27 Socket Landscape Lighting Fixture Gard
When we first sold in Amazon, our goal was to work hard to recommend beautiful and practical lighting fixtures for everyone. Our Promise We are committed to ensuring complete customer satisfaction, and if you have any questions after receiving your product, just let us know and we will provide you with the best solution.Am upgrading from a nikon d-40 to 90 or 300s what lens would be good for boat ride pics with landscape/fishin?they are going to extra healthful and do their interest, yet wo not meter. in case you have any older AF lenses, those wo not AF, the two. i could desire to assert besides, the Nikon F is a great digicam.In your opinion, why has our political landscape become one of party politics as opposed to being an individual and doing what is right?In a Democratic (or any, really) political system, unified numbers are power. That is the power to do right or wrong. And, when one side has power and you disagree with them on important issues, having your own party to do your own right (or wrong) is essential to achieving what you want to achieveAre Democrats typically, generally more liberal today than they were 20 years ago or is the political landscape simply much more polarized than it was 20 years ago?i think the whole country has shifted right. democrats now are where republicans used to be. republicans are somewhere back in the dark ages.I like 18th century landscape paintings but I am a poor slave with no income to indulge my artistic needs...?Yes,the idea seems ok...but i dont think it will look like the original if u are all creative and artistic, y dont u try reproducing these pieces...ull have a lot of fun too and paints dont cost that much..How far from a road do I need to be to not hear the traffic?This depends enormously on landscape, weather, and infrastructure.I grew up in The Netherlands several hundred meter from a motorway, but with good noise barriers, we heard almost nothing. My friend lives less than 100 metre from a noise-barriered motorway and it's nearly inaudible. Now I live several km from a motorway in England, without noise barriers. Depending on the weather, I either hear nothing at all or it's so annoying I can not stand being in my garden, and hear it even with the windows closed. I've been considering to buy a sound pressure level meter to compare my impression to something measurable and try to relate it to my circumstances. The quietest weather tends to be dense fog, when traffic is either crawling or stationary, both of which are sufficiently quiet several kms away.If there's a hill between you and the road, or if the road is underground, you will hear (nearly) nothing even very close. But if the road is in a valley and you are up on the slope, you might hear it many kms away. I've been 10 km from roads and still found some heavy powerful lorries going uphill disturbing, but that on a mostly open landscape with at most small sub-Arctic mountain birch forest type trees.In some countries there are interactive noise maps, such as this one for England. I found the value of this quite limited, as my personal experience is worse than this map claims for my area. It also depends on the road, of course. Some roads have traffic all night, others become completely quiet.Personally, my strategy if I am near a road, is to seek out a sound I find pleasant rather than annoying: specifically, a stream or river. Those may drown out the road sound such that I can pretend to be in the wilderness rather than right next to a road.Which work would you say has had a bigger impact on the cultural landscape, the original Star Wars (1977) or (the book versions of) Lord of the Rings and why?If you take away Lord of the Rings, you instantly also lose Dungeons & Dragons in all of its iterations. You still have wargamers, who push miniatures a designated distance over adorable little fake terrain, but you do not have roleplayers. No spinoff products, like the fairly hilarious Choose Your Own Adventure novels from the 1980s. No t-shirts. No attempts, by TSR or anyone else, to set roleplaying games in the far future, Wild West, or Lovecraftosphere. No Live-Action Roleplaying (LARP) groups, at least not the orc vs. elf kind. No Satanic Panic over the cultural impact in the seventies and eighties (even in E. T. the Extraterrestrial, the protagonist's older brother is playing D&D with his friends in an early scene, much expanded on in the novelization). No hilariously awful novel Mazes & Monsters, and the resulting movie, a breakthrough role for a young Tom Hanks. No Jack Chick tract "Dark Dungeons." No Stranger Things
Tomshine Solar Lantern Light,Outdoor Hanging Garden Lights Metal Lamp for Patio, Patio Decor Metal Y
I bought this item at the end of August 2020. Thought it was lovely and used it for about 8 weeks before putting it back in its original packaging for safe overwintering. I can not say how disappointed i am on finding the lamp dead and not working despite being left to charge over many sunny days. I can only say it has been a waste of money given the amount of use I had and the care I had taken to keep it safe for this year, eight weeks of use is unacceptable . Not happy I will have to bin it, unfortunately I can not recommend. This is a gorgeous solar light with a pretty pattern from the shapes cut out. Size is just right. I absolutely love it. It hangs nicely on my patio and it's lovely and bright. I think I will buy another and it would make a fabulous present for my sister. Lovely lovely lovely. Very happy. Looks expensive not cheap or tacky. By Kate S. on 27 May 2020 This is a gorgeous solar light with a pretty pattern from the shapes cut out. Size is just right. I absolutely love it. It hangs nicely on my patio and it's lovely and bright. I think I will buy another and it would make a fabulous present for my sister. Lovely lovely lovely. Very happy. Looks expensive not cheap or tacky. Really good quality, not a massive Lantern, , however, that did not bother me. The stronger the sun the brighter it is and makes lovely pattern on paving slabs below I would recommend it, you may have to wait a while for delivery, however, you are kept updated Via e mail Footnote: (29thJuly) my solar light does not work now, only had it since back end of May and it was a birthday present from my close friend so very disappointed 2nd footnote (6thAugust) I e mailed the company regarding my lantern not working and in all fairness they were quick to respond and after a couple more e mails back and forth they are sending me a replacement and have told me to be patience as it could take 20-40 days to arrive, they have not asked for the broken one back either. If it arrives and works I will be a happy bunny again 3rd Footnote(sorry) - I received a replacement free of charge very quickly and am pleased to say all is well Really good quality, not a massive Lantern, , however, that did not bother me. The stronger the sun the brighter it is and makes lovely pattern on paving slabs below I would recommend it, you may have to wait a while for delivery, however, you are kept updated Via e mail Footnote: (29thJuly) my solar light does not work now, only had it since back end of May and it was a birthday present from my close friend so very disappointed 2nd footnote (6thAugust) I e mailed the company regarding my lantern not working and in all fairness they were quick to respond and after a couple more e mails back and forth they are sending me a replacement and have told me to be patience as it could take 20-40 days to arrive, they have not asked for the broken one back either. If it arrives and works I will be a happy bunny again 3rd Footnote(sorry) - I received a replacement free of charge very quickly and am pleased to say all is well Do not buy this product...it does not last. This has not lasted more than 6 months. Serious design fault. In August 2020 We were given one of these lanterns as a present and thought that it was lovely, so bought 2 more for the garden. They all worked well for the remainder of the year but stopped working over winter...which I put down to low sunlight levels. But now that spring is here and the sun is shining more again I expected them to come back on, and they have not . I tried all the advice online about trying new batteries, leaving them off, trying a "regular" battery, without success. So I looked at the bulb, and in all 3 cases one of the connecting wires has rusted through (see photo). Given that all 3 lanterns have failed suggests that this is a systemic design/manufacturing fault rather than a one off occurrence and so would not recommend this product to anyone. I have sent a message to contact Tomshine via their support section on their website, but have not had any response. Given what other people are saying here about their responsiveness I fear that I will not have any joy...so think these will have to be "upcycled" into expensive tea light holders! :( Do not buy this product...it does not last. This has not lasted more than 6 months. Serious design fault. In August 2020 We were given one of these lanterns as a present and thought that it was lovely, so bought 2 more for the garden. They all worked well for the remainder of the year but stopped working over winter...which I put down to low sunlight levels. But now that spring is here and the sun is shining more again I expected them to come back on, and they have not . I tried all the advice online about trying new batteries, leaving them off, trying a "regular" battery, without success. So I looked at the bulb, and in all 3 cases one of the connecting wires has rusted through (see photo). Given that all 3 lanterns have failed suggests that this is a systemic design/manufacturing fault rather than a one off occurrence and so would not recommend this product to anyone. I have sent a message to contact Tomshine via their support section on their website, but have not had any response. Given what other people are saying here about their responsiveness I fear that I will not have any joy...so think these will have to be "upcycled" into expensive tea light holders! :( Lovely quality Solar Lightsand great design. They look gorgeous day and night hanging, especially lit up at night displaying a beautiful pattern on my fencing and walls in the garden. Have had them a couple of weeks now and have had no issues with them whatsoever. They charge efficiently and keep hold their charge for a good couple of days/nights until fully charging again. I tend not to leave any of my solar lights out in the rain because I would prefer they not become weather tarnished nor risk their solar powered units, But with the little rain that they did endure the other day, just prior to me noticing it was raining and getting them in, their solar powered units proved to indeed be water resistant. Although again I personally prefer not to allow them to get wet for sustained periods in order to preserve them for longer. These gems are worth that little extra effort so as to keep them working and looking just as good as the day I received them and for as long as possible =).Good compact camera for med/low light outdoors?There's something critical to what you want that you are missing. Cameras, especially small pocket toys are never good in low light. They are fully automatic so the camera is making all of your decisions. An upper end bridge or dslr camera is what you really want for low light - especially indoors. A bridge camera is limited also because you can not always get down to the f/stop you need for the available light. No camera will do everything for you and that's what you are apparently expecting - that wo not happen.
LED Solar Garden Lights Outdoor Owl Ornament Animal Bird Decorative Lamp
Waterproof & Effective The Solar Powered Owl Landscape Light is made with resin and pp material, which has IP55 waterproof level, no worry to pick up in a hurry and normal work in rainy weather. This LED Solar Powered Landscape Light can create a beautiful and romantic atmosphere in any season. Energy & Saving The Owl LED Solar Garden Light will last 8 hours after fully charged (6-8 hours). No extra wire. The Owl Stake Light has a realistic appearance enough to scare away critters. Automatic Charging New Design just turn on the switch on the Owl LED Solar Garden Light. The Solar panels can absorb solar cells to generate energy to automatically illuminate the Stake Light, and turns on automatically when dark by built-in light sensor. Easy To Use This Waterproof Resin Stake Light for Outdoor can be installed easily. Easy to use, just plug the Owl LED Solar Light into the soil and turn on the button back of the solar panel, no needs to connect additional cables. Multi Application This Solar Powered Owl Decoration Lighting can be used for your garden, lawn, courtyard, aisle, porch or tent, picnic, driveway, etc.What is the best two person freestanding tent for around $125?Tents are like cars -- there are many choices in most price ranges that are equally good performers so it is up to personal choice. I would recommend you check out the offerings at www.campmor.com. Everything they sell is decent quality or better and they have dozens of models with very good comparison tables on size, weight and featurs. On a budget, all of the Eurekas are an excellent and I have heard good things about the fairly new Big Agnes brand. They also tend to have specials like discontinued models. I've bought gear from them for about 20 years and have always been pleased with products and service. L.L. Bean's house brand tents are well made and designed too. For packing in a lot of rain and wind, I recommend getting a tent with a good sized vestibule fly -- it's really nice to have that sheltered space for cooking and gear storage. Also, a catenary angled roof, rather than a curved dome, can be better at shedding wind and hard rain, but a dome does give a more spacious feel inside which is preferable if you are stuck inside for a while. Again, it comes down to personal preference. Bargain tents that I would avoid are the house brands at Sears or Walmart. I would be careful of Coleman and Swiss Army too -- mostly made in China with flimsy materials.How do I get tent stakes to hold in sand?This is somewhat like some camping I've done in a place with barely a half inch of soil over bedrock. Obviously, stakes do not work there, either. In that case, we used stones to weigh down tent corners and guy wires. No matter where we stopped our canoes, we knew we could find plenty of stones. However, the beach may not supply that. I suggest that for each stake you would normally have, you bring a square of burlap, about a foot and a half on each side. Burlap is cheap and water goes right through it, while sand holds pretty well. It's nice and lightweight to carry in your tent pack, lighter than your stakes. Turn each square into a stone-sized sandbag by scooping a couple of handfuls of sand into the middle of the square of burlap, then tie it shut with a bit of twine. After you strike camp, just untie or cut the twine, dump out the sand, and you are good to go. It will probably survive a couple of camping trips before you need to replace it, but burlap is cheap and available at any fabric store.Why do people always complain about the size of their tent?It's been that way ever since I can remember with dome tents, if I go to buy one I always figure double the size I want and that works out!Why are refugee tents white?So they can be recognized as a refugee or noncombatant tent and (hopefully) not attacked
LED Solar Wall Lamp|Solar Motion Sensor Light|Solar Wall Lights|LED Solar Lights|Outdoor Wall Lights
Shenzhen Geshide Technology Co., LTD is a manufacturing & trading combo, strength to the LED lighting products over 10 years. We specialized in outdoor solar wall lights, solar flame lights, working lights and flashlights. We expects to share the most professional, front-end, and most favorable solar powered system with you.Naked-Eye AstronomyHuman awareness of the universe began when people realized that they could observe objects in the sky, and that what they saw changed over days, months, and years. To any observer on the ground looking at the sky with the naked eye, the sky appears to be a vast spherical bowl, a celestial sphere that extends from all points along the horizon to the zenith, the point directly overhead. Astronomical objects seen in the sky are so far away that observers viewing them without the aid of a telescope have no intuitive sense of which objects are closer than others. This lack of depth perception causes everything to appear equidistant on the sky. Any object's position on this sphere can be determined by two coordinates, which designate the object's horizontal and vertical location. The vertical coordinate is determined by measuring an altitude angle upwards from the nearest point on the horizon, and the horizontal coordinate is established by measuring an azimuth angle from due north eastwards along the horizon to that nearest point. This system is called either the horizon coordinate system or the altazimuth system (see Figure 1). About 6,000 stars are visible to the naked eye when you can achieve the darkest conditions. The positions of the stars relative to each other remain fixed from night to night and year to year. In general, stars in the same area of the sky have no physical relationship to each other, but the very human tendency to impose order upon otherwise random distributions yields patterns of brighter stars, or constellations. Many constellations of the Northern Hemisphere have been inherited from antiquity, including Ursa Major, the Big Bear, of which the more familiar Big Dipper is part, and Orion, the hunter, which can be seen in the winter sky. Many Southern Hemisphere constellations were defined in the last century to fill in unlabeled regions of the sky. The sky is now officially divided into 88 constellations, which are used in modern astronomy for naming purposes. For example, the star alpha Ursa Majoris ( UMa) is located in the Big Bear constellation. Therefore, Ursa Majoris comes from the name of the constellation, Ursa Major, and the Greek letter indicates that it's the brightest star within that constellation. In addition to modern names, some 90 or so stars also have names from antiquity. For instance, UMa is also known as Dubhe. Over the course of the night, stars move across the sky from east to west as a consequence of Earth's rotation on its axis. The stars appear to move in circular paths around a celestial pole, or either of two points on the celestial sphere where the extensions of Earth's axis would intersect. In the Northern Hemisphere, the celestial pole is coincidentally marked by the relatively bright star alpha Ursa Minoris, also known as Polaris. Simple geometry shows that the altitude angle of the pole star above the northern horizon is equivalent to the latitude of the observer on Earth. To an observer in the Northern Hemisphere, stars that are always above the northern horizon are known as circumpolar stars; an observer in the Southern Hemisphere would see circumpolar stars around the south celestial pole. Stars that are further to the south and that rise and set sometime during the night are called equatorial stars. Equatorial stars rise in the east, move diagonally into the southern sky, achieving their highest position above the horizon on the meridian (the great circle that extends from due north on the horizon, through the zenith, to due south on the horizon). From the meridian, these stars move westward until they set below the western horizon. The celestial equator is that great circle formed on the celestial sphere by extending the plane of the Earth's equator. The equator intersects the horizon due west and due east. An immediate consequence of Earth's rotation is identifying the preferred directions of north, south, east, and west around the horizon, called cardinal directions, by which humans naturally orient themselves. Minute by minute, over the course of the night, both the altitude and azimuth of a star continually change. To more easily observe and track celestial objects, scientists have defined celestial coordinate systems that are fixed upon the sky and thus move with the stars. The equatorial coordinate system is a projection onto the sky of Earth's latitude and longitude coordinate system. Celestial latitude, known as declination, is the angular position north or south of celestial equation. Celestial longitude, measured around the celestial equation, is known as the right ascension (see Figure 2). Declination is measured in degrees, minutes of arc, and seconds of arc. Recognizing that the stars appear to move once around the sky in one day (24 hours), right ascension is measured not in degrees, but in hours, with 24 hours of right ascension (to distinguish from 24 hours of time) equal to 360 degrees. Like the stars, the Sun rises and sets every day. However, unlike the fixed motion of the stars, the Sun's daily path across the sky varies throughout the year. Twice annually, at the vernal equinox (about March 21) and the autumnal equinox (about September 21), the Sun's position coincides with the celestial equator; it rises due east, moves across the sky following the path of the equator, and sets due west (see Figure 3). At this time of year, the length of the day is the same as the length of the night. During the summer, however, the solar position is north of the equator, achieving a maximum northernmost declination of 23.5 degrees at the time of the summer solstice, around June 21. In the winter, the solar position is reversed, with the Sun at its maximum southernmost declination of -23.5 degrees at the time of winter solstice, December 21. The terms equinox and solstice mark not only specific times of the year, but also specific points in the sky. The vernal equinox is that position on the celestial equator where the Sun crosses from the southern into the northern sky. Celestial longitude (right ascension) is measured eastward around the equator from this point. The Sun's seasonal positions in the sky. Relative to the background stars, the Sun also moves about one degree eastward each day, thus encircling the sky in the course of a year. This ecliptic, or the great circle on the celestial sphere defined by the solar path, is tilted with respect to the celestial equator by 23.5 degrees. Throughout the year, the ecliptic passes through the 12 zodiacal constellations. Because the apparent solar movement is caused by Earth's motion around the Sun, the ecliptic plane is also a projection of Earth's orbit about the Sun. That Earth's rotational equatorial plane does not perfectly match its orbital plane (the ecliptic plane) about the Sun is directly responsible for the annual northsouth movement of the Sun and the consequent seasons. The length of the year is based on the time that the Sun takes to complete its annual path around the sky. During the year, the stars and constellations visible at night change as the seasons pass through their cycle. A year is, in fact, 365.25 days long. To keep the calendar in sync with the actual seasonal passage of time, every four years we have a leap year, or a year of 366 days. The additional day, February 29, makes up for the time lost annually when the 365.25 day cycle is computed as 365 days. The length of a day is based on the time it takes for the Sun to complete its daily path across the sky, from its crossing of the meridian at noon to its next crossing of the meridian the next day. Daily time based on the hourly position of the Sun in the sky, relative to its noontime position each day, is called apparent solar time. To astronomers studying the stars, however, the time of day alone is not a sufficient method for determining which stars can be observed at any given time. Astronomers need to know both the time of day and where the Sun is in the sky to find out which stars they can observe. More specifically, what is of interest to an astronomer is the sidereal time, or the right ascension of the stars that are crossing the meridian at any moment. Sidereal time and solar time are not equal because of the annual motion of the Sun across the sky. The true rotation period of Earth is 23 hours, 56 minutes, but the length of the day is four minutes longer. In one rotation of Earth, the Sun has moved roughly one degree across the sky, thus Earth has to rotate a little bit longer to get the Sun back to the same position on the sky. The solar day is 24 hours long. The actual length of any given day varies throughout the course of the year for two reasons. First, Earth's orbit around the Sun is not a circle, but an ellipse. The Sun's apparent motion across the sky therefore varies slightly, moving more than the average one degree per day in January, but a bit less than the average in July. Second, the solar motion along the ecliptic moves parallel to the celestial equator at the times of the solstices when the Sun is farthest north or south of the equator, but at the times of equinoxes, its motion is at an angle to the celestial equator. What is important for the length of the day is only that part of the solar motion parallel to the equator. This produces a second variation to the length of the day. The difference between apparent solar time (which would be shown by a sundial) and mean solar time (which would be shown by a clock or watch) is called the equation of time. This is a complicated effect involving orbital mechanics (the motion around an ellipse is not uniform), perspective (a moving object closer to the observer has a greater apparent motion), the tilt of the ecliptic to the equator (hence the daily component of solar motion across the sky varies from equinox to solstice), and a geometrical factor resulting from the fact that we are dealing with a spherical coordinate system; this latter you can demonstrate to yourself by placing your thumb on the equator of a globe. Note how much longitude angle it covers. Now place your thumb near the north pole. Your thumb will cover the same area, but as measured in longitude, it covers a much bigger longitudinal angle. And it's that angle that is important for rotation and hence the length of a day. Noon, as defined by mean solar time, can occur as much as 16 minutes late in October or 14 minutes early in February compared to the Sun's actual crossing of the meridian. Observation of the Moon shows that it not only appears to change its position by moving around Earth, but at the same time, the fraction of its surface that is illuminated by sunlight (its phase) also changes (see Figure 4). When the Moon is directly opposite the position of the Sun, it appears totally illuminated, or in full phase. When the Moon is viewed at an angle of 90 degrees from the position of the Sun, its surface appears half illuminated, or in its quarter phase. Between full and quarter Moon, the phase is said to be gibbous. If less than half the Moon is illuminated by sunlight, the phase is crescent. When the Moon is in the direction of the Sun and the side toward Earth is its dark or shadowed half, the Moon is said to be new. The cycle from new Moon waxing (increasing illumination) to first quarter to full Moon, then waning (decreasing illumination) to third quarter and back to new Moon takes 29.5 days, a period adopted as the basis of our calendrical month. The lunar phases are observed because of the changing geometrical orientation between the Sun, Moon, and Earth over the course of the lunar month, not the result of Earth casting its shadow on the Moon. The Moon takes 27.3 days to move once (360 degrees) around Earth as determined by its orbital position relative to the stars; the orbital period is therefore also an example of a sidereal period, a period measured relative to the stars. This 27.3 days can also be called a sidereal month. The time from full Moon to full Moon is longer, 29.5 days, because two motions are involved: the motion of the Moon around Earth and the motion of Earth around the Sun. To become full again, the Moon must move more than 360 degrees around Earth. The lunar month, or lunation, is thus an example of a synodic period, or a period produced as the consequence of two motions. The term synodic month is also applied to this 29.5 day period. Another example of the difference between a sidereal period and a synodic period is the rotation of Earth (23 hours, 56 minutes) and the length of a day (24 hours). The actual path across the sky of the Moon is quite complicated. The lunar orbital plane is tilted about 5 degrees 9 minutes with respect to ecliptic plane. The orientation of these two planes rotate with respect to each other over an 18.6 year period. In consequence, relative to the celestial equator, the lunar orbital plane has a variable tilt that periodically oscillates from 23.5 degrees minus 5 degrees 9 minutes equals 18.3 degrees, to 23.5 degrees plus 5 degrees 9 minutes equals 28.7 degrees. In other words, over the course of the month, the Moon can oscillate north and south across the celestial equator between declinations of as little as 18.3 degrees to as much as 28.7 degrees. Each month the path of the Moon across the sky differs slightly from its path the prior month and from its path the next month. In contrast, each year the solar path around the sky is essentially the same. Astronomers find particularly interesting the two intersection points, or nodes, between the great circles of the ecliptic plane and the lunar orbit. If the Sun and Moon in their motions about Earth move simultaneously through nodal positions, an eclipse occurs (see Figure ). If the Moon and Sun are at the same node, the Moon passes in front of the Sun and a solar eclipse results, lasting only a few minutes in duration. If the two are at opposite nodes, then the Moon passes through the shadow of the Earth and a longer duration lunar eclipse occurs. The cycle of occurrence of eclipses is quite complicated because three factors are involved. The Sun moves around the sky in 365.25 days. The Moon moves once around the sky every 27.3 days. The direction to a node (where the two orbital planes intersect) moves around the sky in 18.6 years. To get an eclipse, all three positions (Moon, Sun, and node) have to be along a straight line through Earth. This event does not happen with a simple pattern of regular time intervals. Nakedeye observers in antiquity recognized five other objects that move across the sky relative to the stars - the planets. The word planet comes from the Greek, meaning "wanderer." Planetary motion is more complicated than that of the Moon or Sun, which move systematically west to east relative to the stars. The planets' usual motion is west to east, termed direct or prograde motion. But in each synodic period, planets show a brief period of motion in the opposite or retrograde direction. Retrograde motion is the result of perspective. Consider, for example, driving on a freeway. You look forward toward a slower moving car. Relative to the distant mountains, it is clear that this car is moving in the same direction you are moving. But as you catch up to and bypass the slower car, you see it appear to be moving backwards compared to the distant horizon. As you pull ahead, once again looking back at the slower car shows it to be moving forward. Observation of other planets from Earth produces the same apparent reversal of motion relative to the background of stars. (See Figure 6).
Why Does a Sodium Street Lamp Give Off a Different Color of Light Than a Neon Light?
Neon, IIRC, has an orange cast to its glow while sodium has a yellow cast to its glow. The color comes from photons being emtted as electrons fall from a higher energy orbitals into a lower energy orbital. The energy difference between orbitals in neon is different from the energy difference in orbitals in sodium.1. A street lamp weighs 150 N it's supported by two wired that form an angle of 110 with each other?the vertical component of the tension in each wire supports half of the weight of the streetlamp the wires each form a 55 angle with the vertical (110 / 2) t cos(55) = 150N / 2 for an 80 included angle ___ t cos(40) = 75N2. 1'16 scale street lamp 1940s?I would get a good picture of the lamp post and head, then it's off to the hobby shop for some brass tubing, wire and wheat germ light bulbs3. What does it mean when a street lamp goes off upon reaching it?ah faulty wiring??4. why does a sodium street lamp give off a different color than a neon light?When atoms are sufficiently excited, electrons are promoted beyond the outer shell and the atom ionises. When the electron falls back again, the energy is re-emmitted as light. the wavelength of the light [it's colour] depends on the element. Hence neon gives a red light and sodium a yellow light. Incidentally, most sodium street lights contain neon as well and are red when they first come on .. when they heat up and the sodium starts vaporising, the familiar yellow appears as this colour is so intense that it swamps the weaker red.5. would You rather be a Street-LAMP or a LAMP-Shade?Street lamp, no question. To shine instead of shadowing another light. Be out there, meet people (or dogs at least)6. Why would my AC unit make the street lamp turn off?Your AC Unit probably uses a lot of energy when you turn it on, thus making the light go out7. where can i park my bike in the city if theres no bike racks?Park it next to a solid post like a power pole or street lamp and chain it up with a solid logging chain in a plastic hose that will not scratch your bike with a hefty padlock. Do not use a street sign or anything that can be removed with 1 bolt. U bolts and cables are junk. Ask any bike courier. Chain up both wheels as well and anything else that can be easily removed. good luck.8. why does your shadow lengthen as you walk farther away from a street lamp?had to do with angle9. would You rather be a Street-LAMP or a LAMP-Shade?Lamp shade, dogs pee on street lamps10. Does anyone know anything about the very large dragon street lamp in Venice Italy?I will take a look at it tomorrow...I am actually in Venice!!! Ciao... Got there and saw the dragon..though nobody knew about it...it's pretty neat11. Is a landlord required to have a street lamp on a street when they rent every house on the street?The only time I've ever seen privately maintained street lights is out in the country12. would You rather be a Street-LAMP or a LAMP-Shade?A street lamp so I could be the beacon of light that guides people to their front doors every evening. Keeping them safe from harm13. Why is a street lamp's orange light become white before turning orange?as the electricity is started the lamp begins to glow the wave lenght of photons emitted is large and in not much hot at that instant later after some time it will get hotter and emit photons of smaller wave length as you knoaw orage is smaller wave lenght than white14. Calclulus - Related Rates: A 6-foot-tall woman is walking at the rate of 4 ft/sec away from a street lamp ....?Draw a right angled triangle ABC, where
DIY: Outdoor Lamp Post
From lighting a dark walkway or driveway to adding accents to a patio or pool area, outdoor lighting is an efficient and cost effective way to improve the look of your home. While you could hire an electrician to do the work for you, installing an outdoor lamp post can be accomplished over the course of an afternoon with a few simple tools and a trip to your local home improvement store.Finding out your local ordinances can be as easy as contacting your local county office or checking the internet to see if your county has the applicable regulations posted. Municode.com lists most codes for most counties in the United States. Violation of local building ordinances can result in legal penalties.Different styles of lights are better for different things. For example, according to Solar Power At Home, "A beautiful and reliable way to keep your pool area safe at night is to install lamp posts powered with solar energy around the pool deck. The height of a lamp post works perfectly to light above ground pools at the same time as keeping your yard safely navigable." On the other hand, mini post solar lights tend to work best around plants or trees as they are low enough to the ground to still be able to charge all day while providing good quality free lighting all night. The most efficient way to decide what lights are best for your area is to observe your yard in the daytime and after dark to see what areas need light the most and which get the most sunlight during the day. Draw up your plan and take that to the home store to avoid a lot of guesswork and unnecessary returns.Once you've mapped out your lighting strategy, you'll need to decide what style lamp and post you want. Aside from aesthetics, the main decision you'll face is whether you want a solar-powered or low-voltage light. Solar lighting has the advantage of being easier to install and of course provides free light. According to home improvement site House-Garden, "All you need to do is decide where you want to install a light, stick it in the ground and you are done. If you decide you don't like that location, just pull it up and move it. No new wiring to run or move. No timer to set and no difficult connections to worry about." If you choose to go with a low-voltage option, you'll need to make sure your intended location is reasonably close to a power source unless you plan on running cable underground to a box and enclosing it in a weather-proof structure.Your tools will include a set of post hole diggers, a shovel and a wheelbarrow to carry any gravel you plan to add into the bottom of your hole.Standard materials for this project include a landscape plan or drawing, a wood or aluminum lamp post, photo sensor and a lamp head. If you decide to mount your lamp post on a base, you will also need bolts to secure the post to the pedestal base. In-ground installation needs no base. Low-voltage lamps will also require a battery pack, power cable and some sort of easily accessible power source. You may or may not want to enclose your power cable in PVC conduit but I would recommend this option if your cable will cross a section of lawn that gets mowed. In this situation, bury the cable at least 18 inches below ground to protect it in the event you decide to install a fence and forget where the cable is buried. If this is your first time doing this project, ask for lamp posts that include most of the items mentioned. Otherwise you'll need to buy a photo eye lamp and a post adapter kit separately.
Outdoor Ip65 Integrated Garden Solar Panel Led Street Lamp Fixtures
the brillihood 12w integrated solar street light is an affordable solar street light with a brightness of over 1200 lumens. it shines a cool bright white light with a temperature of 6000k. it is suitable for lighting up garages, streets, patios, and gardens. 300w solar street lights outdoor lamp, 480 leds 12000 lumens with remote control light control, dusk to dawn security led street light for yard, garden, street, basketball court 300w led solar street light factory direct sale ,20000lumens street street light outdoor ip67 waterproof with remote control security lighting for yard, garden, gutter, swimming pool• RELATED QUESTIONWhat size solar panel would I need to run a rotating fan?That you could run that fan straight from the panel. A 2 Watt panel is about the right dimension. It will begin spinning at cut down vigour output however not acquire the rated speeds unless peak vigor from the panel. The perspective should be satisfactory.The Guardian asks: Are we really going to let ourselves be duped into this solar panel rip-off?I've often thought about crooks bypassing meters myself. But surely to get paid for the electricity you've stolen and sold to the grid would require an "Import/Export meter". At present obviously we only have an "Import" meter to enable our bill for usage of electricity to be measured. Surely there's only one cable? The same cable surely imports on demand and exports when the householder's electricity production exceeds demand, thus the "excess" is fed to the grid via the "Export" meter? It's not April 1st is it?How much would be the investment for solar panel which runs 2 Air conditioner?Solar Air Conditioner IndiaHow can you have solar panel home?Not easy to convert it into AC power because it produces DC power that is different than from wall outlet power source and its voltage is very low, like 0.5V per cell. Must need first to charge a very big battery bank, and then convert the battery power into AC power with a converter before able to power a fridge. Solar penal contains many small solar cells, they convert sun light ( the only free light source) into electricity directly with a very low efficiency like 5%. Mount them with a strong frame on top of roof facing to the open sky to catch the bright sun light, under shadow would not work well or produce no electricity. A VERY EXPENSIVE SYSTEM AND REQUIRE TAKE CARE OF IT DAILY, AVERAGE LIFE IS 5 YEARS.If someone shined a flashlight at a solar panel, would it generate electricity?It may generate electricity. But it would not generate as much power as your flashlight would use. Your flashlight produces light. It also produces heatWould a solar panel that generates 50 kW of power charge a battery to 500 kWh in (about) 10 hours? (I'm assuming there would be some losses, but I wanted to see if that was correct for most cases)You are theoretically correct, except that it is too much to expect charging at topmost power of 50 KW non-stop for 10 hours, starting from discharged condition. You will never get sun for this long period and that too at this level.Sunlight will be available for maximum 5-6 hours a day, and intensity depends on season, weather and other conditions. Intensity keeps varying over a day, over a season for the same time.So you will have to charge it at a higher rate, or be content with the charging you get in a day, and wait for few days for complete chargingI have a 30 watt solar panel that puts out 1.8 amps. What size battery should I get?regular car battery will work but you will need more than one . may be 30 or more depending how much eletcricity you need when there is no sun or not enough sun. It depends on a number of factors do you have A.C. electric oven stove electric dryer ect.An appropriate voltage regulator / limiter for a 5V solar panel for USB charging?My first reaction is to put the two panels in series, then use a off the shelf buck regulator chip. If the two panels can not even put out 6 V or so in series (3 V per panel), then there is so little power available that it does not matter if the output is just shut offHow to convert a 10-Watt solar panel into 3v & 3 amp?I saw somewhere an answer to a question that seemed to apply quite usefully to your question. I am posting it here with slight modification. Note that this is not my work - just seems mainly useful.Comments in [square brackets] are mine.[These are all good points worth noting that many people miss]To get 9W out of a 10W panel you need bright mid-day sun, the panel must be clean AND pointed towards the Sun and 90% SMPS efficient Buck Regulator that utilizes the 17.3V max power level of the array.[worth noting]Not all SMPS will do this as the switching current can be much higher than the average current thus drop your PV Array well below Vmax power, so more Power management design is required, such as a 17.5V battery design to regulate the input voltage. If you do not , you will be lucky to get 5W.[Here is a useful TI web bench simulation that somebody has set up that matches your need.]You also want an Econo mode for cloudy days for more efficiency.The TPS54526 is one good solution.will this solar panel power this fan through dc current?Yes,you will need a good storage battery to carry it through the nightI want to make a solar panel for 240 volts, help me out please?If you are in Malaysia, I am not sure why you need a heater, except maybe a water heater. For that, use a solar heater directly. For the electricity, the most cost-effective way to do it is to stay connected to the grid, and offset your bill with solar. That way, you do not need to oversize the solar for contingencies. There will be compromise in your lifestyle, everything that plugs into the wall today will still plug into the wall and work fineis 12v 800w solar panel enogh tu run a 12 cubic refrigerator?A 12 cubic foot fridge operates on 110 volt power, not on 12 Volts, you will need a generator to power a fridgeWhat would a 60 watt solar panel power? How many watts for a small home?You can run a 60 watt light bulb when the sun is shining. Or your can charge a battery and then run the 60 watt light bulb at night. It theory if you had 8 hours of sun you would be able to run the bulb for 8 hours off of battery. In reality because of losses you will not get 8 hours of bulb running timewhat all can a 200 watt solar panel power up?I am going to assume you have a 200 watt continuous wattage converter on your deep cycle batteries. Overall there is not a definite answer as much as a recommendation by doing research of items around the house that you may want to run. The best way to do some figuring is to take the wattage requirements of devices around the house. The most common CFL lamp is 13 watts 120 volts. You can extend the charge life by using 12 volt LED lighting, which would bypass the inverter (always a good idea). Ditto on a fan - a typical modern 20" box fan draws 50-100 watts depending on speed. A laptop computer can draw over 100 watts alone when under a full load, but taper off when not needed. The list could go for miles. A Kill-A-Watt wattage meter is a must have for checking items around the house for their actual current draw. Many ratings are maximum ratings, not the actual real-world normal draw. Also look into more and more direct 12 volt items. Then you can bypass the inverter, and that is a plus as the inverter is not totally efficient.Does anybody know if there are any courses for solar panel installation, and/or what trades you need for this?What you ought to recognize will depend on WHAT sort of installations you are going to be operating with. In regular, for business you wish to have fundamental mechanics and wiring. For house, you may additionally want a few carpentry, roofing, preserving structural integrity, plumbing, and so on. In side it additionally will depend on what sort of sun installations you are doing, (vigour, air warmers, water warmers, and so on.)Is this how much this solar panel collects an hour?it collects 135 watts an hour ( think of it as gallons in a pail) at 17 volts ( the pressure in the pipe filling the bucket ).....yes all you tech savy people I know its not quite that simple...... so when that panel is operating at peak efficiency ( which depending on how far north you live is anywhere from 2 to 6 hours a day) you could charge a 12v battery at 8 amps....of course at 17 volts you would fry a 12v battery really quickly; you need to buy an regulator as well.......or if you were running the panel to an inverter you could power two 65 watt light bulbs.I have a few solar panel stick in the ground night lights that beep in the evening but don't give light. Why do they beep?My guess is, they only beep in the daylight hours, because their internal battery is shorted or otherwise non-functional, they have no or insufficient voltage to operate at night, and cannot charge in the daytime.And maybe they screwed up when assembling, and those few were put together with "make an annoying beep when voltage is present" parts, rather than functional "solar-recharged night light" partsanyone Arco solar panel ASI 16-2000 watts ?These are around 25 years old The following link is for some test done on these old modules that found them to be about 30W. (Actual wattage will be dependent upon incoming sunlight) Starts on page 5would wiring a solar panel and grid tie inverter to the house wiring save electricity?NO, it just changes the sourceCan I charge my 12v deep cycle battery with any size solar panel?Yes I use a 50 watt panel to charge my boat batteriesdoes sunlight in winter have the same amount of power for a solar panel?Yes it will. The reason is that the panel, being pointed directly at the sun, will have the same surface area regardless of the season. The earth on the other hand is tilted at about 23 degrees, so during the winter the sunlight is spread over a greater area than in the summer, so it does not warm the air as much and hence, colder weather. By maintaining an angle perpendicular to the sun at all times, the sunlight is never spread out. Although you will have to adjust it throughout the year to maintain that angle, as the earth will 'tilt' beneath it.Could a solar panel, essentially power itself?No, because energy is lost through dissipation and through the conversion process. With mirrors you might be able to reduce this effect.Can someone explain this microcontroller ADC interface (for reading solar panel voltage)?What is the role of the pnp transistor network?It's a differential voltage to current converter followed by a load (R34 and R35). The voltage between P and P- sets a voltage across R31. This (minus 0.7 volts) sets a voltage across R33 and that causes a current to flow out of the collector (largely irrespective of what load the collector has). Given the values of R33, R34 and R35, whatever voltage is set across R33 appears across R35 but, reduced by 3:1. Importantly, this voltage is ground referenced making it suitable for the ADC to make sense of. So there is level shifting involved
Why Would My AC Unit Make the Street Lamp Turn Off?
Whenever an electric motor starts, it places a heavy load on the power line for a fraction of a second, and that causes the voltage to momentarily drop. If that voltage drop goes below the voltage that the light requires to stay lit (these are often gas-filled tubes that use sodium or mercury vapor) the light will go out. It's not likely to be a problem, but if you are concerned, the electric company may be willing to put a recording monitor on the power line so that they can actually measure the drop. If it's excessive, there may be a bad connection somewhere upstream of the light and your house, or the wires may inadequate, i.e. too thin. for the service current that you have. If they do not have that equipment, or are unwilling to check it for you, a well-equipped electrician may have access to a power-line monitor/recorder. If the voltage drops below the minimum, then the electric company needs to install a larger gauge wire to serve your house (or even your neighborhood).1. Smart street lamp tech could put speed cameras everywhereInternet-connected, "smart" streetlamps and intersections are being touted as the next big thing in the world of automotive technology, but while they would arguably be a major benefit to road safety and driver convenience, such systems could also create a blanket of speed cameras. The concept of networked road infrastructure is not new, and in many cities the lights and built-in sensors of most intersections are already monitored remotely. The next step, however, is to add more sensors into the mix to keep tabs on the precise positions of cars and pedestrians, while beaming out that information to any cars in the immediate area. It's a noble idea. Say, for example, that there's a pedestrian about to cross the road in front of you but is obscured by a truck in the next lane (below). Such a system could give you advance warning - or automatically slam on the anchors - before the situation becomes life-threatening. Accidentally running a red light could also become a thing of the past too, as your car would be alerted if it's in danger of crossing a stoplight, while the extra data generated would be critical to making autonomous vehicles function both efficiently, and safely. That safety-critical information would be sent directly to cars in the vicinity through the Direct Short Range Communications protocol, rather than via a cloud server over the internet. With ultra-low transmission times, DSRC is a better choice for that kind of vehicle-to-infrastructure information transfer. The benefits do not stop there. More intelligent vehicle monitoring would allow traffic light sequences to respond to changes in traffic flow, easing congestion and reducing the amount of time wasted by sitting still at intersections. With each junction connected via the internet, slow-moving traffic jams could be cleared far more efficiently by phasing traffic light cycles sympathetically. That said, safety is the main driver behind the smart intersection idea. Continental, which showcased its latest vision for digitally-enhanced street infrastructure at the Continental TechShow earlier this month, says its aim is to use its sensor technology to reduce the number of crashes globally. With 40 percent of road crashes in the United States occurring at intersections, Continental says it makes sense to start its smart infrastructure efforts there. Meanwhile, sensor modules strapped to ordinary lamp posts - Continental's "Intelligent Street Lamp" concept, below - holds the potential to stretch the digitisation of the road network well beyond illuminated intersections. Besides informing nearby intersections of approaching traffic, the street lamp modules would also be able to monitor parking spaces and direct nearby cars to vacant spots. They could even survey air and noise quality, uploading that information to the cloud. If there's a hazard on the road, such as a fallen tree or vehicle accident, they could alert approacing cars via the DSRC protocol. However, even Continental admits that the sensor technology could be adapted to other purposes, such as extending the reach of speed enforcement well beyond main roads. "It depends on the country. I cannot make that general statement, because it's really specific, but every market has its requirement. If you look at how speeding, for example, is solved today by radar technology, this is the technology that we are implementing here in our sensor, so what is possible today can be done in future done by a street lamp-mounted sensor." But that's not to say that Continental's system will automatically fine those creeping above the speed limit wherever it's installed. In fact, data protection laws in Europe mean that kind of surveillance is be expressly forbidden. "Of course, everything we are doing here [in Europe] is GDPR (General Data Protection Regulation) compliant - it's about taking good care of an individual's personal information. We solve that by not transmitting any personal data at all, like a licence plate." There are, however, no such data protection laws in Australia. According to Continental, if the client city or state wants the ability to use its smart streetlights for speed enforcement, it has the technological means to do so. Cost, however, may be the only obstacle to putting that tech on every street. "If you look at more advanced systems like combining camera and radar, which means detecting over-speeding through license plate recognition at the same time and automatically fining those people, that is a use case that today is probably only happening in the Chinese market right now - but we will see how the market develops." In many Chinese cities citizens can be detected by CCTV cameras and identified via facial recognition, with an AI system automatically fining those detected breaking the law by, for example, jaywalking - an extension of that government's mass surveillance program and a precursor to its infamous "social credit" system. "The concept we have here is a modular concept, where a city can really address their specific 'pain points' - which are very individual". "For example, the US is using gunshot recognition on street lamps, so microphones on streetlamps can hear a gunshot, and through triangulation you can know where the gun was fired. At the same time the waveform is analysed and you can know which kind of gun it was." While Australia does not have the same issue with gun crime or the draconian AI-driven 'social credit' system of China, the prospect of putting a speed camera in every street may prove to be an attractive idea to police and councils eager to clamp down further on speeding motorists - while also eventually delivering the safety benefits touted by Continental as cars become increasingly connected.2. Why would my AC unit make the street lamp turn off?The heavy start current for your Ac is possibly causing enough of a voltage drop that the street light which probably has a weak firing card, is below the threshold voltage the light needs to stay on. This will get worse through the year. Finally it will turn off by itself and stay off for about an hour then restart and repeat3. A street lamp weighs 150 N. It is supported by two wires that form an angle of 120 degrees with each other..?once again components. Check my updated answer for the first inclined plain question also
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