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Recent content by Alireza12

  1. A

    Switching a transformer

    Hi guys, Based on the below image I want to switch the transformer( with high inductance and low resistance) the power supply is 220v ac 50Hz and the relay is ideal which have a 25Hz of switching frequency with 50% duty cycle. As you see in the graph which shows the current passes through the...
  2. A

    [SOLVED] back to back SCR driver circuit

    Hi guys thanks. I swapped the gate and cathode pins wiring of the scr2 and now it works well. I don't know why but maybe company's fault.
  3. A

    [SOLVED] back to back SCR driver circuit

    the Opto-Triac is working well.
  4. A

    [SOLVED] back to back SCR driver circuit

    Hello guys I have used the following image circuit to drive two back-to-back SCR. A reliable Semicron dual thyristor module has been used for scr1 & scr2 (1000V, 27amp). and the load is 220 ohm. when I use this circuit the output voltage is a half-wave because one of the SCRs is not working. (...

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