Showing posts with label Auto Switch-Off Torch. Show all posts
Showing posts with label Auto Switch-Off Torch. Show all posts

Monday, 26 March 2012

Auto Switch-Off Torch

An elderly acquaintance who couldn't cope with battery recharging was getting through dry cells rapidly by leaving their torch switched on, so I built the following LED torch circuit which switches off automatically after about five minutes. Switching the torch off manually then resets the circuit.