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DC CHOPPER FIRING CIRCUIT
  1. Study of 4 line synchronised triggering pulse to fire thyristors connected in DC chopper circuit.
  2. The firing circuit is based on Ramp-comparator method. Isolation is provided by Pulse Transformer.
  3. Potentiometer to vary the firing angle from 180 to 0.
    (i) Power Supply: +12V/500mA
    (ii) Mains: 230V mains operated

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