What Pulse Transformer needed to drive MCR100-6 thyristor for AC/DC converter

Discussion in 'General Electronics Chat' started by whywhy68, Aug 7, 2008.

  1. whywhy68

    Thread Starter Member

    Jun 11, 2008
    any pulse transformer part no to recommend ?

    I know nothing about pulse transformer.

    Below is my circuit


    I have designed a gating pulse from comparator and delay it with a 555 timer.

    As i know i needed a pulse transformer to drive the thyristor for making AC/DC converter. What part no to recommend ?
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    Pulse transformers are usually 1:1 devices. Just observe polarity so the pulse makes the gate positive relative to the cathode to switch the device.
  3. whywhy68

    Thread Starter Member

    Jun 11, 2008
    any model can recommend me ? know nothing about pulse transformer
  4. mik3

    Senior Member

    Feb 4, 2008
    Also, take care of the pulse duration rating of the transformer. If you apply pulses which last longer than the rated value then after yuor pulse will overcome the rating pulse time the output voltage of the transformer will start to decrease exponentially due to saturation of the core.