Power Supply Question

Discussion in 'General Electronics Chat' started by thiha rarzar, Jan 20, 2009.

  1. thiha rarzar

    Thread Starter New Member

    Jan 20, 2009
    I want to make a powersupply for Led series lamp directly from 220vAC line.Can anyone help ?
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    LED's need enough voltage to bias them into conduction, and then some means of controlling current through them. For safety, use a transformer to lower the voltage and isolate the circuit from the power line.

    Different LED's take different voltages and currents. We need more information on the kind and number of LED's you plan to use.

    Here is a link to our Ebook that talks about LED's - http://www.allaboutcircuits.com/vol_3/chpt_3/12.html