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. 02, 1978
Filed:
Jul. 20, 1976
Applicant:
Inventor:
Kyuichi Hareyama, Tokyo, JA;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330261 ; 330 69 ; 330108 ; 330260 ;
Abstract
A reference voltage source circuit includes two transistors having their collectors connected to the input terminals of a differential amplifier. The transistor terminals are connected in common, and to the output of the amplifier. In accordance with one aspect of the present invention, variable resistance structure is employed to control the collector currents in the transistor to maintain the temperature-output voltage transfer characteristic at a low level. In accordance with another aspect of the present invention, the transistor supply may depend from the amplifier output to reduce the influence of supply voltage variations on the regulated output potential.