Gravity Powered Lights

A British Company, deciwatt.org has developed a simple, low cost light which can be used by remote communities isolated from the main electricity grid.  This simple low cost light source can be an alternative to the kerosene lamp which is polluting and expensive as it consumes kerosene which consumes a significant part of the family's income. Kerosene has also been linked to accidents.

The Gravity lamp is powered by a dynamo which is drive by a weight (a bag of sand) which is raised to a certain level.  As the weight gradually descends, it drives the dynamo which powers the LED.

This gravity powered light can last for half an hour by when the weight comes to its lowest position.  After that, it has to be lifted to its higher position which takes about 3 seconds.  It then starts again.  The power from this dynamo can be used to power LEDs for illumination, to charge batteries or to power a radio. 

This lamp would ideal for households in remote communities.

The company says that with increased research and production, the efficiency and cost would improve further..

Visit www.deciwatt.org

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