Scr and Zener regulating circuit

Discussion in 'The Projects Forum' started by gman4dx266, Aug 31, 2015.

  1. gman4dx266

    Thread Starter New Member

    Aug 8, 2013
    1
    0
    Hey guys hoping you can help me..I.built this circuit for rectifying 3 phase AC into regulated 13/14 volt DC. The issue I have is the SCRs are triggering after the AC rises past a certain point and are dumping off voltage instead of maintaining a constant DC voltage. Is the Zener possibly undersized, I'm in need of a gate cathode resistor, or the gate trigger resistors are wrongly sized to begin with? Thanks in advance!
     
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