Photoswitching device including a MOSFET for detecting zero volt

Details Photoswitching device including a MOSFET for detecting zero volt Photoswitching device including a MOSFET for detecting zero volt

1993-02-11

1994-03-08

Ngo, Ngan

Active solid-state devices (e.g., transistors, solid-state diode

Regenerative type switching device

Bidirectional rectifier with control electrode

257121, 257122, 257124, 257127, 257128, 257132, 257133, 257154, 257167, 257170, 257494, H01L 2974, H01L 2702, H01L 2934

Patent

active

052930513

ABSTRACT:
A switching device includes a thyristor and a MOSFET, and a voltage clamp circuit. The voltage clamp circuit includes an N.sup.+ type contact region formed in a surface layer of a N type substrate and electrically connected to a gate electrode of a MOSFET, and a P type guard ring surrounding the contact region.

REFERENCES:
patent: 4622568 (1986-11-01), Schutten et al.

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