Fuse Resistor, and discharging-type surge absorbing device with

Details Fuse Resistor, and discharging-type surge absorbing device with Fuse Resistor, and discharging-type surge absorbing device with

1993-06-01

1995-04-04

Lateef, Marvin M.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338 22R, 338 24, 338195, 338295, 338306, 338308, 338314, 361104, H01C 1012, H01C 710

Patent

active

054041260

ABSTRACT:
A fuse resistor protects a circuit from a surge, an overcurrent from an unexpected connection, or the like. When a continuous overvoltage higher than a predetermined value is applied to the circuit, the heat from a heat-generating resistant film fractures an insulating substrate of the fuse resistor to open the circuit. Changing the minimum current to which the fuse resistor responds, by modifying a cutout or notch on the substrate, makes it possible to use the fuse resistor anywhere in the circuit. A discharging-type surge absorbing element with a security mechanism that includes the fuse resistor can thus provide protection against a surge or a continuous overcurrent that is more than the rated value of the fuse resistor.

REFERENCES:
patent: 3337832 (1967-08-01), Hukee
patent: 3978443 (1976-08-01), Dennis et al.
patent: 4961065 (1990-10-01), Taylor
patent: 5084693 (1992-01-01), Taylor et al.

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