Base current compensation circuit for a bipolar junction...

Details Base current compensation circuit for a bipolar junction... Base current compensation circuit for a bipolar junction...

2006-10-03

2006-10-03

Shingleton, Michael B. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

C330S129000, C330S130000, C330S138000, C330S261000, C330S257000, C327S108000, C327S478000, C327S589000

Reexamination Certificate

active

07116174

ABSTRACT:
A method and apparatus for compensating a base current of a bipolar junction transistor by replicating operating conditions of the BJT in a compensating circuit. An output current of the compensating circuit is fractionally related to the base current and thus can be supplied to an operational circuit comprising the BJT to compensate the base current. In a preferred embodiment, the BJT is operated between BVCEO and BVCBO and the base current to be compensated flows from the BJT.

REFERENCES:
patent: 3967207 (1976-06-01), Wheatley, Jr.
patent: 6710649 (2004-03-01), Matsumoto et al.
patent: 6965267 (2005-11-01), Delorme et al.

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