Resistor trimming process for high voltage surge survival

Details Resistor trimming process for high voltage surge survival Resistor trimming process for high voltage surge survival

1993-10-12

1996-04-02

Lateef, Marvin M.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338 21, 338195, 338260, 338320, 21912169, H01C 710, H01C 1010

Patent

active

055044700

ABSTRACT:
Several trim patterns are illustrated which are suited for use in high voltage, surge prone environments. The invention combines a block resistor with a simple scan cut and two or more plunge cuts to simply form a resistor. The resulting resistor is immune to adverse affects associated with current crowding and arcing, both known to have much adverse impact on the prior art.

REFERENCES:
patent: 1771236 (1930-07-01), Schellenger
patent: 2041213 (1936-05-01), Schellenger et al.
patent: 2068113 (1937-01-01), Schellenger et al.
patent: 3304199 (1967-02-01), Faber et al.
patent: 4403133 (1983-09-01), Turner et al.
patent: 4528546 (1985-07-01), Paoli
patent: 4563564 (1986-01-01), Ericsen et al.
patent: 5043694 (1991-08-01), Higashi et al.

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