This is a very simple led torch light that uses the series connection of a led, a switch, a resistor and a 9 volt battery. It is very handy to use when there is no light. To make the torch brighter the number of LEDs can be added. Required materials The list of materials required for making a LED...By: sunojshrestha
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from Instructables: exploring http://ift.tt/1yKK99h
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