light-activated silicon controlled rectifier

light-activated silicon controlled rectifier

[′līt ¦ak·tə‚vād·əd ¦sil·ə·kən kən¦trōld ′rek·tə‚fī·ər]
(electronics)
A silicon-controlled rectifier having a glass window for incident light that takes the place of, or adds to the action of, an electric gate current in providing switching action. Abbreviated LASCR. Also known as photo-SCR; photothyristor.