smps based welding machine

Discussion in 'The Projects Forum' started by arunpradh, May 2, 2014.

  1. arunpradh

    Thread Starter Member

    Dec 11, 2013
    now iam trying to make a driver board for an inverter welder 200A. i used igbt for switching and sg 3525 as pwm generator . i used variac to set the testing voltage. the set works well. but some thing is wrong at full throttle, igbt burns out.
    can anybody help me to design it properly?
    i want to know more about the duty cycle, setting output voltage and ampire and also the feed back mechanism

  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    need a circuit to assist you.
    arunpradh likes this.