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. 04, 1977
Filed:
Nov. 25, 1975
Applicant:
Inventors:
David R Boothman, Ennismore, CA;
Everett C Elgar, Peterborough, CA;
Assignee:
Canadian General Electric Company Limited, Toronto, CA;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361103 ; 361 98 ;
Abstract
A circuit for monitoring semiconductor junction temperature includes means for obtaining a signal representing the current flowing through the semiconductor, a current controller, an electrical analog of the thermal system of the semiconductor, a direct current supply, and a voltage level detector. The current controller is connected in circuit with the analog and the combination to the d.c. supply. The current conducted by the controller via the analog is controlled by the signal such that the voltage across the analog indicates junction temperature and this voltage is monitored by means of the level detector.