Low resistance paints for surge applications using nickel-chromi

Details Low resistance paints for surge applications using nickel-chromi Low resistance paints for surge applications using nickel-chromi

1996-08-08

1998-03-31

Berhane, Adolf

Electrical resistors

With base extending along resistance element

Resistance element coated on base

338 22R, H01C 1012, H01C 710

Patent

active

057343144

ABSTRACT:
A surge resistor has a thick film resistance element containing alloyed nickel-chromium mixed with alloyed copper-nickel and less than twenty percent by weight glass. The surge resistor overcomes the limitations of the prior art by offering the unexpected advantage of improved power surge handling capacity. A thick film composition used to form the surge resistor, which also includes screening agent, is fired at temperatures generally below 1,000.degree. C., yielding a highly stable and well adhered electrical resistor. In addition to improved surge capability, the composition offers lower cost and less migration than the precious metal alternatives that the composition replaces. Additional inventive surge resistors include copper-manganese and nickel-chromium in combination with less than twenty percent by weight glass.

REFERENCES:
patent: 4780598 (1988-10-01), Fahey et al.
patent: 4999049 (1991-03-01), Balderson et al.
patent: 4999731 (1991-03-01), Bender et al.
patent: 5057964 (1991-10-01), Bender et al.
patent: 5064997 (1991-11-01), Fang et al.
patent: 5166658 (1992-11-01), Fang et al.
patent: 5345512 (1994-09-01), Brown
patent: 5518521 (1996-05-01), Kuo

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