| gate-turnoff silicon-controlled rectifier [¦gāt ¦tǝr´nȯf `sil·ǝ·kǝn kǝn´trōld `rek·tǝ´fī·ǝr] ELECTRONICS A silicon- controlled rectifier that can be turned off by applying a current to its gate; used largely for direct-current switching, because turnoff can be achieved in a fraction of a microsecond. |