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:
Feb. 10, 1987
Filed:
Feb. 10, 1986
Applicant:
Inventors:
Toshiro Suzuki, Tama, JP;
Osamu Matsubara, Kokubunji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323315 ; 307304 ; 323312 ;
Abstract
For realizing a stabilized current source circuit providing a stabilized current which is insensitive to a change in the threshold voltage of a MOS transistor, a gate electrode of a first MOS transistor feeding a drain current as a constant current output is supplied with the sum of the gate-source voltage of a second MOS transistor and the potential of a stabilized voltage source.