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, 2001
Filed:
Nov. 17, 1999
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kaibushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A constant voltage circuit having excellent temperature characteristics at a wide temperature range. Temperature characteristics control means constructed by connecting a voltage dividing circuit formed by connecting fixed resistors in series to a diode in parallel is provided between a fixed resistor and a Zener diode having a positive temperature coefficient of a bridge circuit, and the output of a connection point between the fixed resistors of the temperature characteristics control means is applied to the non-inversion input terminal of a differential amplifier to correct the temperature change of the Zener diode.