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:
Mar. 24, 1987
Filed:
Apr. 10, 1985
Applicant:
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K / ; G01K / ;
U.S. Cl.
CPC ...
374178 ; 307310 ; 357 28 ; 323907 ;
Abstract
The temperature sensing circuit includes a source of constant current I.sub.S, a voltage divider R.sub.1, R.sub.2 and an output transistor T.sub.1 whose base collector circuit is connected parallel to the first resistor and whose base emitter circuit is connected parallel to the second resistor. An auxiliary source of current having a positive temperature coefficient is connected in series with the first resistor of the voltage divider to cause a voltage drop thereon having an opposite temperature coefficient than the output voltage U.sub.S generated at the collector-emitter circuit of the output transistor.