Precision power resistor with very low temperature coefficient o

Details Precision power resistor with very low temperature coefficient o Precision power resistor with very low temperature coefficient o

1984-11-20

1987-06-30

Goldberg, Elliot

Electrical resistors

Resistance value temperature-compensated

338195, 338306, H01C 710

Patent

active

046774130

ABSTRACT:
A precision resistor exhibiting a temperature coefficient of resistance which is very low and which is virtually independent of time, and capable of accepting high power, comprises a resistive foil applied to a substrate by means of an appropriate cement, wherein the coefficient of thermal expansion of the substrate is either at zero or as close to zero as is possible, and wherein the resistivity versus temperature characteristic of the foil selected is adjusted so as to compensate for the thermal strain induced change in resistance which results when the temperature of the assembly changes, and the device is reacting to the application of power virtually without creating a transient phenomenon due to the flow of heat. Also a method for producing such a precision resistor.

REFERENCES:
patent: 4176445 (1979-12-01), Solow
patent: 4242660 (1980-12-01), Cocca
patent: 4286249 (1981-08-01), Lewis et al.
patent: 4301439 (1981-11-01), Johnson et al.
patent: 4378549 (1983-03-01), Szwarc
patent: 4475409 (1984-10-01), Zulliger

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