Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2006-01-31
2006-01-31
Cunningham, Terry D. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C327S484000, C327S327000, C327S540000
Reexamination Certificate
active
06992521
ABSTRACT:
A switch in bipolar technology including a first main transistor of a first type connecting an input terminal, intended to be connected to a first terminal of application of a D.C. supply voltage, to an output terminal intended to be connected to a load to be supplied; a second bipolar transistor of the same type as the first one, connected between the input terminal and an input of a current mirror circuit having a copying output connected to the base of the first transistor, the bases of the first and second transistors being interconnected and the first transistor having an emitter surface area greater than the second one; and a circuit for biasing the second transistor including the copying of the output voltage of the switch on the collector of this second transistor.
REFERENCES:
patent: 4645999 (1987-02-01), Szepesi
patent: 5125112 (1992-06-01), Pace et al.
patent: 5661395 (1997-08-01), Johnson et al.
patent: 6201381 (2001-03-01), Yasuda
patent: 6541949 (2003-04-01), Sirito-Olivier
French Search Report from corresponding French National Application No. 0307087, filed Jun. 12, 2003.
Patent Abstracts of Japan, vol. 013, No. 142 (E-739), Apr. 7, 1989 & JP 63 304705 A (Toshiba Corp.).
Cunningham Terry D.
Hiltunen Thomas
Jorgenson Lisa K.
Morris James H.
STMicroelectronics S.A.
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