Search for "solar" - 830 results.

Regenerating Solar Cells

September 8, 2010 | by David Graus

Something that struck me while I was reading up on MIT's latest news on the development of a new type of solar cell, was that the sun (eventually) destroys conventional solar cells. This never ocurred to me, while I recently visited Morocco and can see how the sun pounding on everything everyday

Solar charging regulator

March 1, 2000 | by H Tronic

A small solar power installation consists of at least three components, namely a solar panel, a storage battery and a charging regulator. The charging regulator limits the final charging voltage and also protects against reverse current flow.If you were thinking that nothing new has appeared in

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Solar-Powered Charger

June 1, 2005 | by Paul Goossens

During the summer months they appear again all over the place: those solar powered garden lights. During the day they store the captured solar energy, which is used at night to provide lighting. If you'd like to use this energy for something different, such as listening to the radio or playing

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Tracking Solar Panel

July 1, 2008 | by Manfred Schmidt-Labetzke

This small 12 V solar power source maintains its orientation towards the sun under control of a timer rather than the more usual light-sensitive arrangement. All the parts needed to build the project can be found in a well-stocked hardware shop or DIY store.

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Portable Solar Modules

June 1, 2009 | by Harry Baggen

Especially with somewhat longer trips, a portable solar panel can come in very handy to ensure that you always have enough power for your mobile phone, iPod, GPS receiver, and even the car battery. We selected some of the products currently available in this area, and here we describe what they

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RGB Solar Lamp

July 1, 2011 | by Marcel Ochsendorf

This deluxe solar-powered light uses a battery and solar cells salvaged from a solar lamp with a four-cell battery (4.8 V nominal terminal voltage). The circuit can operate from any DC voltage around this value and its current consumption, at 20 mA, is low. This means that the battery can

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‘Green’ Solar Lamp

July 1, 2012 | by Burkhard Kainka

Energy saving is all the rage, and here is our small contribution: how much (or rather how little) current do we need to light an LED? Experiments with a super-bright 1 W green LED showed that even one microamp was enough to get some visible light from the device.

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Solar cell supply

December 1, 1992 | by Bernard C. Zschocke

The simplest solar-cell supply system consists of three parts: a diode, a solar-cell panel, and a rechargeable battery. The diode prevents the battery being discharged through the solar panel when no or little sunlight falls on to the panel.

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Solar panel switch

December 1, 1993 | by Luc Lemmens

When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevented by a diode, but that has the drawback of a forward voltage drop of 0.7 V or, in the case of a Schottky diode, 0.4 V. In many applications. this is not

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Solar-charging regulator

July 1, 1996 | by K. Walraven

Considering the deteriorating state of our environment and the decreasing resources of organic fuel, it is not difficult to predict a much more prominent role for solar energy as an alternative energy source in years to come. For individuals, too, it is becoming more and more interesting to employ

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