SCR Triggering

Discussion in 'General Electronics Chat' started by vaibhavbhagate, Sep 7, 2012.

  1. vaibhavbhagate

    Thread Starter New Member

    Sep 7, 2012
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    According to the basic principle of working of SCR, should get trigger after getting gate signal.I have connected two antiparallel scr's with gate short & not connected to any signal,but scr's are getting triggered & motor is running without any gate signal with input connected to the supply(230ac) & output connected to motor.So can someone help me about this?
     
  2. Biff383

    Active Member

    Jun 6, 2012
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    Sounds like you are exceeding the breakover voltage for the SCR.
     
  3. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
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    Last edited: Sep 7, 2012
    PackratKing likes this.
  4. Jaguarjoe

    Active Member

    Apr 7, 2010
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    Maybe a Triac would work?
     
  5. ramancini8

    Active Member

    Jul 18, 2012
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    SCRs will false trigger on high DV/DT signals.
     
  6. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    Perhaps a further clarification - that would relate to the anode-to-cathode dv/dt.
     
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