Anonymous
Anonymous asked in Cars & TransportationMaintenance & Repairs · 1 decade ago

What is the role of SCR in a capacitive charge circuit?

What is the role of SCR in a capacitive charge circuit?

3 Answers

Relevance
  • Anonymous
    1 decade ago
    Favorite Answer

    An SCR is basically a solid-state, electrically controlled switch. Its function is most likely to discharge the capacitor into some other part of the circuit or onto a load.

  • 1 decade ago

    Connected in series with the capacitor, the SCR can act as a switch to start the charging.

    Connected in parallel with the capacitor, the SCR can act as switch to discharge the capacitor.

    Gate current is needed in both cases to initiate charging or discharging.

    In a slightly different circuit, a capacitor can be used to commute SCR.

  • 1 decade ago

    It only allows current to flow in the circuit when the gate voltage rises enough to allow the SCR to conduct.

    When charging an electrolytic capacitor from an AC circuit, the SCR will only fire when:

    1) the AC signal is in the correct polarity and

    2) the SCR gate voltage is high enough for the SCR to conduct.

Still have questions? Get your answers by asking now.