Compensating for trimming-induced shift of temperature...

H - Electricity – 01 – C

Patent

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H01C 17/232 (2006.01) H01C 7/06 (2006.01)

Patent

CA 2581284

A compound resistor is used to compensate for trimming induced shift in temperature coefficient of resistance of a trimmable resistor. The compound resistor is composed of a first and second portion, at least one of the two portions being thermally trimmable, and the parameters for the first and second portion are selected such that the trimming induced shift can be minimized on an overall resistance and temperature coefficient of resistance of the compound resistors by trimming the trimmable resistor.

L'invention concerne une résistance variable utilisée pour compenser les variations induites par des ajustements du coefficient de température de la résistance d'une résistance variable. Cette résistance variable est composée d'une première et d'une seconde partie, au moins une des deux parties étant ajustable par voie thermique. Les paramètres de la première et de la seconde partie sont sélectionnés de façon que les variations induites par des ajustements puissent être réduites au minimum par rapport à une résistance globale et à un coefficient de température de la résistance de la résistance variable par ajustement de la résistance variable.

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