Discussion in 'The Projects Forum' started by Furqan Haider, Jan 31, 2016.

  1. Furqan Haider

    Thread Starter New Member

    Jan 15, 2016
    Hi can anyone please tell me that how can i give 12 volts to this connector J1 through which led blows?
  2. Robyn

    New Member

    May 1, 2013
    Hi Furqan.
    Be careful if you are a novice as this schematic shows part of a power supply. When you deal with power supplies you deal with potentially deadly voltages. If you are a novice i suggest you stay away from them for the moment.

    Now for the answer: the circuit starts with a diode bridge whose job is to turn an AC voltage into a DC voltage. This means that you should connect a low AC voltage (12v for example). Then U1 will turn it into a lower and regulated 5v and feed it to the LED.

    Here is a great read for you: