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. 01, 2000
Filed:
Dec. 09, 1994
Jan J Van Den Broek, Eindhoven, NL;
Anton Heger, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A description is given of a precision resistor. The resistor comprises a substrate having two connections which are electrically interconnected via a resistance path, said resistance path comprising a first path portion having a positive TCR and a second path portion having a negative TCR. The resistor is characterized in that the resistance material of both path portions is selected so that the resistance values and the absolute TCRs of both path portions are comparable and in that both path portions are trimmed so that the resistor has desired resistance and TCR values. Preferably, the resistance materials used for the path portions consist of an alloy of substantially the same composition on the basis of CuNi or NiCrAl. The invention makes it possible to very accurately and reproducibly mass-produce precision resistors.