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Search for "solar" - 830 results.

Solar Relay

December 1, 2003 | by Wolfgang Zeiller
With extended periods of bright sunshine and warm weather, even relatively large storage batteries in solar-power systems can become rather warm. Consequently, a circuit is usually connected in parallel with the storage battery to either connect a high-power shunt (in order to dissipate the excess
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Solar Lamp

September 1, 2005 | by Karel Walraven
Solar powered lights are nowadays available at incredibly cheap prices, so we won't advise you to build these yourselves. But you may be just like us: you've bought one of these devices and wonder what's inside it and how they could be produced so cheaply. We have taken one apart to
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Solar Charger

March 1, 2011 | by Martin Kiel
With renewable energy high on the agenda, this little project will appeal to everyone who would feel better charging their mobile or PDA from solar sources. A lithium-ion cell stores the sun’s energy in between charging sessions. Smart circuitry in the solar charger monitors the battery voltage and
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Solar dryer

December 1, 1995 | by Wolfgang Zeiller
Drying the washing in sunlight has a number of advantages compared with using a tumble dryer: it saves a lot of energy : the ultraviolet radiation kills most bacteria still present in the washing; the clothes and other items get a thorough airing: and the clothes are far less crumpled.
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Solar energy

May 1, 1996 | by Elektor Team
The subject solar energy often causes heated debates. Banned as ecological daydreaming by its opponents, solar power technology is hailed as a panacea, along with other forms of alternative energy, by its supporters. As usual, the truth is probably somewhere in between these extremes
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solar tracker

July 1, 1979 | by Elektor Team
Sun I ight is now recognised as an important source of `alternative` energy, and the use of solar panels to convert the sun`s rays into electricity is becoming ever more widespread. For solar panels to operate at maxi-mum efficiency, however, it is important that the cells face squarely into the
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Solar Power… revisited

October 4, 2015 | by Martin Cooke
Solar cells traditionally use photovoltaic effects to convert sunlight to electrical energy but what if antennae could be made small enough to actually couple with light waves...

Project Planet Solar

March 6, 2010 | by Elektor Team
The first boat to cross the world on solar energy! After more than 13 months spent in the boatyard in the hands of Knierim Yachtbau’s boatbuilding team in Germany,  last week PlanetSolar revealed its futuristic design  and its state-of-the-art technology for the first time. And I have to say, I

Solar Valley City

April 19, 2010 | by Elektor Team
China is taking the future seriously and started building 'Solar Valley City', a center for manufacturing, research and development and education around solar energy technologies. China is moving fast on the market of sustainable technology and is leaving other players behind. Already China is the

Transforming Solar Flashlight

August 11, 2010 | by Elektor Team
I'm leaving on a little camping trip to France tomorrow so this one seems appropriate: A transforming flashlight that splits open and turns into a lamp. A simple solar cell allows the transforming flashlight to recharge in both open and closed states. For all you happy campers out there! Designer