Sunday, April 14, 2013

Simple LED Torch



This is a simple LED torch.The specialty of this circuit is this circuit helps you to  operate your torch for many hours.Here I have used 2W LED.Through this circuit you can light up your torch about one month.Here I have used a common IC 7555.This circuit operates with 6V But if you like to operate this circuit with 9V or 12 V you have to change R3 .If you use 9V use 470 Ohm.If you use 12V use 560 Ohm.








Note


# Build this circuit on a PCB
# Don't use NE555 instead of 7555
# Use alkaline batteries
at

2 comments:

  1. Colin MitchellNovember 29, 2013 at 6:53 AM

    Why use a chip. Just connect the LED to a resistor !!!!!

    ReplyDelete
  2. ZamNovember 30, 2013 at 9:10 PM

    But this circuit can save your power .
    I don't know whether you have seen leading mobile phone companies use this technology they have applied this method for their screen back light. then tell me are they fools?

    ReplyDelete