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:
Mar. 26, 1985
Filed:
Apr. 01, 1983
Applicant:
Inventor:
Tsutomu Okayama, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323281 ; 323312 ;
Abstract
A two-terminal current regulator has a sensing resistor, a reference voltage generator, a current controller, an error amplifier for controlling the current controller such that a voltage drop across the sensing resistor is equalized to a reference voltage generated by the reference voltage generator, and a current distributor for distributing currents to the reference voltage generator, current controller and the error amplifier such that the currents are proportional to a current flowing through the sensing resistor. Thus, a high precision constant current characteristic is attained.