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:
Aug. 09, 1994
Filed:
Jul. 01, 1992
Applicant:
Inventors:
Brendan P Kelly, Stockport, GB;
Royce Lowis, Stockport, GB;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; H03K / ;
U.S. Cl.
CPC ...
307310 ; 307350 ; 307355 ; 307356 ; 307358 ; 307491 ;
Abstract
A temperature sensing circuit has a first insulated gate field effect device which is operated deep into its subthreshold region where the voltage across the device varies with temperature and has a second insulated gate field effect device which is operated in an area of its square law region where the voltage across the second insulated gate field effect device is substantially independent of temperature. A comparator compares the voltages across the first and second field effect devices and provides a signal OT indicating the temperature sensed by the first insulated gate field effect device.