Working Of SCR On ac

Naman Agarwal

Naman Agarwal

@naman-42FOIm Oct 23, 2024
scr can turn 'on' by applying dc...can it also turn on by applying ac source???

Replies

Welcome, guest

Join CrazyEngineers to reply, ask questions, and participate in conversations.

CrazyEngineers powered by Jatra Community Platform

  • Ramani Aswath

    Ramani Aswath

    @ramani-VR4O43 Aug 8, 2012

    An SCR comes on when a forward current passes from the gate to the cathode. Once switched on it remains on so long as the minimum holding current passes from the anode to the cathode. When the reverse voltage is applied it behaves like a reverse biased diode.
    Unless the gate is forward biased, the SCR will not trigger. If an AC is applied. The scr will trigger on positive half cycle. If the AC is also applied to the anode and cathode, the SCR comes on during positive half cycles.
    #-Link-Snipped-#