Compound resistor and manufacturing method therefore

Details Compound resistor and manufacturing method therefore Compound resistor and manufacturing method therefore

1987-02-27

1989-02-07

Albritton, C. L.

Electrical resistors

Mechanically variable

Resistance value varied by removing or adding material

338308, 338 25, H01C 1000

Patent

active

048034576

ABSTRACT:
A compound resistor is formed of a resistive material making up a predominant portion of the resistance and having a small negative TCR coupled with an adjustment material having an extremely low resistance and a very high positive temperature coefficient of resistance. After the manufacturing process, a portion of the adjustment material is removed to adjust the composite TCR of the compound resistor substantially to zero without significantly affecting the resistance.

REFERENCES:
patent: 4041440 (1977-08-01), Davis et al.
patent: 4079349 (1978-03-01), Dorfield
patent: 4375056 (1983-02-01), Baxter et al.
patent: 4464646 (1984-08-01), Burger et al.
patent: 4582976 (1986-04-01), Merrick

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