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. 15, 1985
Filed:
May. 31, 1983
Applicant:
Inventor:
Milton D Bloomer, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 86 ; 323289 ;
Abstract
A circuit for preventing excessive power dissipation and for avoiding latch-up, in power switching semiconductor devices, monitors the forward conduction drop of the switching semiconductor device and removes the control electrode drive signal provided thereto, if the drive signal is insufficient for supporting the load current flowing through the driven device. The voltage across the controlled-conduction portion of the switching device is monitored and compared to a reference voltage, which may be also related to the load current, to remove switching device drive if the controlled-conduction portion voltage exceeds the reference comparison voltage.