Current limiter of output transistor

Details Current limiter of output transistor Current limiter of output transistor

2007-04-03

2007-04-03

Tran, Anh Q. (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Signal level or switching threshold stabilization

C326S032000, C326S034000

Reexamination Certificate

active

11024598

ABSTRACT:
A current limiter of an output transistor comprises an output transistor, a current detection transistor monitoring a current flowing through the output transistor, a current mirror circuit, a protection transistor outputting a current having passed through the current mirror circuit, the current being proportional to the monitored current and dependent on a voltage between a drain and a source or between a collector and an emitter of the output transistor and an input terminal connected to an output of the protection transistor.

REFERENCES:
patent: 5272392 (1993-12-01), Wong et al.
patent: 5650737 (1997-07-01), Eilley
patent: 6664773 (2003-12-01), Cunnac et al.
patent: 1081841 (2002-03-01), None
patent: 2-226808 (1990-09-01), None
patent: 2-226808 (1990-09-01), None
patent: 02226808 (1990-09-01), None
patent: 5-003289 (1993-01-01), None
patent: 6-113443 (1994-04-01), None
patent: WO 96/12347 (1996-04-01), None
Chinese Office Action dated Aug. 18, 2006 (with English translation).
German Office Action dated Feb. 13, 2006 with English translation.

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