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The transistor lat as SCR trigger

This circuit works similar to a SCR. When the trigger input is high, Both transistors Q2(PNP transistors) and Q1(PNP transistor) will work. Therefore, a current flow to the base pin of Q2, it has voltage 0.7 volts at resistor R1.

When cutting the activation voltage, the transistors can continue to perform, because the base current. The reset circuit will do this by cutting the power supply circuit. Which this circuit we press the switch Reset button only.

The transistor lat as SCR trigger

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This Post Has 3 Comments

  1. Thanks.

  2. This Circuit is a Great way To Teach SCR Basics!!1 This was how i was taught in College. WELL DONE!!!!

  3. Hi Mr ohm 1970 my friend,
    Thanks for your feedback.
    Wishing you happiness and prosperity in this New Year. Enjoy each day.

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