Farm Workers Enjoy the Benefits of Solar Lighting“When I put in the new solar lights, my kid thought it was electricity and told me to turn on the TV! There’s no difference to main power (grid electricity), the solar is very bright. ”Jacinta, 27, is a mother and employed at Olerai Farm in Narok, Kenya. She was able to purchase her lighting system, which includes a set of four solar LED lamps and a 5W solar panel and battery for recharging, through a scheme sponsored by the farm.
Try and assemble by yourself this very promising and cost-effective light source.First of all we need to determine the polarity of the LED - some manufacturers apply plus and minus signs to the contacts of the LED, but some LEDs can be supplied without the polarity indication. We are using a tester to do this job. If you connect the plus test lead to the positive contact of the LED, and a minus to negative contact - LED should light up. PCB for LEDs has a corresponding plus and minus designation.
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