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. 21, 1989
Filed:
Jun. 08, 1987
Applicant:
Inventor:
Kousaku Uota, Himeji, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361154 ; 361 89 ; 361 91 ;
Abstract
A defect detector circuit for an inductive load driving circuit which has a surge comparator circuit for comparing a surge generated from an inductive load when the current of the inductive load is interrupted with a reference value on the basis of an output from a surge absorber circuit for absorbing the surge, and a surge time deciding circuit for outputting a defect signal when a time that the surge amount exceeds the reference value does not fall within a set range on the basis of the output from the surge comparator circuit.