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. 10, 1978
Filed:
Jan. 28, 1977
Applicant:
Inventor:
Masaru Hashimoto, Ayasemachi, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03F / ;
U.S. Cl.
CPC ...
3072 / ; 3073 / ; 330297 ; 323-4 ;
Abstract
A constant current circuit including an emitter follower stage consisting of a transistor and a resistance connected in series thereto, an output stage connected in cascade with the emitter follower stage, and two diodes connected in series between the base of the transistor and an external power source, whereby a desired output current which flows through said output stage is obtained by supplying predetermined currents to the diodes and the emitter follower stage respectively.