The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2006
Filed:
Sep. 29, 2004
Applicants:
Hao Fang, Savage, MN (US);
Cameron Carroll Rabe, Inver Grove Heights, MN (US);
Inventors:
Hao Fang, Savage, MN (US);
Cameron Carroll Rabe, Inver Grove Heights, MN (US);
Assignee:
Agere Systems Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/04 (2006.01); H03K 3/00 (2006.01);
U.S. Cl.
CPC ...
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.