Semiconductor switch

Details Semiconductor switch Semiconductor switch

H - Electricity

03

K

356/161, 328/193

H03K 17/08 (2006.01) H03K 5/04 (2006.01) H03K 17/0812 (2006.01) H03K 17/16 (2006.01)

Patent

CA 1101565

Abstract of the Disclosure A semiconductor switch comprising a PNPN switch having a four-layered PNPN structure with at least three PN-junctions, a switching circuit for electrically short-circuiting a path between a P-type base and an N-type emitter of the PNPN switch when a transient voltage is applied between a P-type emitter and the N-type emitter of the PNPN switch, and a drive circuit for driving the switching circuit. The drive circuit driving the switching circuit so that the path between the P-type base and the N-type emitter may be electrically short-circuited for a fixed time even after termination of the transient state, whereby any improper operation of the PNPN switch is prevented.

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