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. 26, 1982
Filed:
Apr. 09, 1980
Applicant:
Inventor:
Takakuni Kuki, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; G01R / ;
U.S. Cl.
CPC ...
340636 ; 455115 ; 455226 ;
Abstract
A voltage drop detection circuit provides an accurate indication of battery voltage in an apparatus subject to large fluctuations in load current regardless of the battery internal resistance. The detection circuit periodically induces an increase in load current so as to reproduce the maximum load current drawn by the apparatus, and the resulting battery terminal voltage is compared to a fixed reference. The detection circuit finds particular utility in apparatus designed to use a variety of battery types.