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. 24, 1992
Filed:
Oct. 17, 1990
Applicant:
Inventors:
Assignee:
Seikosha Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324428 ; 324433 ; 340636 ;
Abstract
A battery voltage detecting device has a circuit for separately detecting the time it takes for a capacitor to be charged to a second reference voltage, in response to the application of a battery voltage and a first reference voltage to the capacitor. A calculating circuit determines the battery voltage from the charging times of the capacitor and the values of the reference voltages.