The above circuit is designed to drive a LED with 0.2A. This current rating is fixed by the Resistor R1 in the circuit. The formulae to determine the current is. I = Vref/R1 where, Vref is 1.25V for ...

You have seen many LED torches in the market, mostly use white LEDs as they provide good brightness and light. Today we are making the low cost and highly efficient Simple LED torch light Circuit ...