Method for forming universal film resistors

Details Method for forming universal film resistors Method for forming universal film resistors

1978-05-17

1979-08-07

Gilden, Leon

Metal working

Method of mechanical manufacture

Electrical device making

H01C 700

Patent

active

041633156

ABSTRACT:
A method for forming a film resistor for hybrid circuits trimmable from 0 ohms to infinite resistance, whereby resistive material is deposited over previously applied conductive material. One edge of the resistor material is flush with one edge of the conductor path and the resistor material extends beyond the opposite side of the conductor path. The resistor is trimmed to value by a laser or mechanically abrading a slot in its center perpendicular to the conductor by simultaneously removing a portion of both conductor and resistive material.

REFERENCES:
patent: 3284878 (1966-11-01), Best
patent: 3573703 (1971-04-01), Burks
patent: 3594679 (1971-07-01), Seay
patent: 3947801 (1976-03-01), Bube

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