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:
Jul. 31, 1990
Filed:
May. 30, 1989
Applicant:
Inventor:
Stanley Wrzesinski, Arlington Heights, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 42 ; 361 18 ; 361 58 ; 361100 ;
Abstract
A short circuit protection arrangement (2) for a driver circuit (9, 16) including a diode (24) for sensing the presence of a short circuit condition at the driver circuit output; and an arrangement (18, 20, 22, 24) for sensing the discontinuance of the short circuit condition by establishing an inductive current at the output upon the occurrence of the short circuit condition and sensing the increase in voltage at the output due to the inductive current upon discontinuance of the short circuit condition. Such a protection arrangement may be used for each of a plurality of driver circuits (40, 50, 60, 70, 80) utilizing a common inductance (36, 38).