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:
May. 05, 1987
Filed:
May. 12, 1986
Applicant:
Inventors:
Birney D Dayton, Nevada City, CA (US);
Richard Bannister, Grass Valley, CA (US);
Assignee:
The Grass Valley Group, Grass Valley, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330288 ; 3072 / ; 330310 ;
Abstract
A current mirror which is stable and accurate for a broad range of beta gain factors of the individual transistors thereof has two transistors of one type connected substantially as a Darlington pair. A multiplying, multi-collector transistor of the opposite type is connected serially between the collectors of the Darlington pair from base to emitter. One collector is diode connected to the base and the other is returned to a potential source. The collectors are of equal area.