Basic operation and practical application circuits for SCRs.
An SCR (Silicon Controlled Rectifier) is a controllable medium- to high-power self-latching solid-state DC power switch. This article explains its basic operation and shows some practical ways of using it.
SCR basics
An SCR is a four-layer PNPN silicon semiconductor device. It has three external terminals (anode, gate, and cathode)...
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