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:
Jan. 30, 1990
Filed:
Jul. 14, 1988
Applicant:
Inventor:
Koji Nishio, Mitaka, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330257 ; 323316 ; 330288 ;
Abstract
A current mirror circuit comprises first, second and third transistors of same conductivity type. The emitter electrodes of the first and second transistors are connected to the power source terminal, and the base electrodes thereof are connected in common. An input current is supplied to the collector electrode of the first transistor. The emitter electrode of the third transistor is connected to the common connection of the first and the second transistors, and the base electrode thereof is connected to the collector electrode of the first transistor. A resistor is connected between the base and the collector electrodes of the first transistor.