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Optoelectronic Devices
A light activated silicon controlled rectifier (LASCR) is a silicon controlled rectifier (Thyristor) that conducts when the gate is exposed to light. The gate still operates as a normal gate in a SCR, but is in many cases left disconnected. LASCR is a unidirectional device that conducts current in only direction. The basic LASCR circuit is illustrated above. Like all SCRs and triacs one must use A.C. or pulsating D.C. for proper operation
