Nonlinear resistor for low temperature operation

Details Nonlinear resistor for low temperature operation Nonlinear resistor for low temperature operation

1986-03-20

1990-04-17

Walberg, Teresa J.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

29612, H01C 710

Patent

active

049184210

ABSTRACT:
A nonlinear resistor which exhibits substantial temperature independence over a wide range of temperatures, including low temperatures, is provided. The resistor is formed of a zinc oxide-based ceramic composition which exhibits nonlinear voltage/current characteristics and is essentially unafffected by magnetic fields. The nonlinear resistor provides protection for electrical devices in a circuit from voltage surges and/or transients. In a preferred form, the resistor is manufactured as a multilayer capacitor-type device.

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Levinson et al, The Physics of Metal Oxide Varistors, 46, J. Appl. Phys., 1332 (1975).
Philipp et al, Low-Temperature Electrical Studies on Metal-Oxide Varistors-A Clue to Conduction Mechanisms, 48, Appl. Phys., 1621 (1977).
Mahan et al, Theory of Conduction in ZnO Varistors, 50, J. Appl. Phys., 2799 (1979).

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