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. 01, 1985
Filed:
Sep. 29, 1982
Applicant:
Inventors:
Ulrich Lehmann, Weissach, DE;
Rudolf Gabriel, Gerlingen, DE;
Assignee:
Dr. Ing. h.c.F. Porsche AG, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361101 ; 361 91 ;
Abstract
An electronic current overload protection device in which an applied voltage is divided into the voltage across the load and the current-proportional voltage drop at an MOS transistor of a circuit that includes the load and the MOS transistor whose resistance is exactly linearly proportional to the current; this voltage drop is applied by way of a delay circuit to a threshold switch that controls the gate input of the MOS transistor by way of a driver stage; the threshold of the threshold circuit is adjustable corresponding to the current to be protected against.