Normally-off electronic switching device for on-off control...

Details Normally-off electronic switching device for on-off control... Normally-off electronic switching device for on-off control...

2008-12-23

2010-12-14

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

C327S434000, C327S436000, C327S437000

Reexamination Certificate

active

07852137

ABSTRACT:
A device capable of bidirectional on-off switching control of an electric circuit. Included is a normally-on HEMT connected between a pair of terminals of the device. A normally-off MOSFET of relatively low antivoltage strength is connected between the HEMT and one of the pair of terminals, and another similar MOSFET between the HEMT and the other of the terminal pair. A diode is connected in inverse parallel with each MOSFET, and two other diodes are connected between the gate of the HEMT and the pair of terminals respectively. The switching device as a whole is normally off.

REFERENCES:
patent: 5142215 (1992-08-01), Mathison
patent: 5789900 (1998-08-01), Hasegawa et al.
patent: 6670790 (2003-12-01), Stellberger
patent: 7199640 (2007-04-01), De Cremoux et al.
patent: 7245175 (2007-07-01), Morita
patent: 7324315 (2008-01-01), Harris
patent: 7369387 (2008-05-01), Harris et al.
patent: 7492566 (2009-02-01), Harris
patent: WO2004/114508 (2004-12-01), None

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