Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1989-08-03
1991-08-13
Lateef, Marvin M.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
252518, 338 20, H01C 710
Patent
active
050399713
ABSTRACT:
A voltage non-linear resistor, composed mainly of zinc oxide and contains at least bismuth oxide, antimony oxide, and silicon oxide as additives, wherein crystalline phases of bismuth oxide includes at least two kinds of .beta. and .delta. satisfying the following inequalities: ##EQU1## in which .beta. and .delta. are contents of the .beta. type crystalline phase and the .delta. type crystalline phase, respectively. A voltage non-linear resistor is also provided, wherein bismuth oxide further includes an .alpha. type crystalline phase, and .alpha., .beta. and .delta. satisfy the following inequalities: ##EQU2## in which .alpha. is a content of the .alpha. type crystalline phase. A voltage non-linear resistor is further provided, wherein the resistor contains at least .delta. type crystalline phase of bismuth oxide and an amorphous phase containing bismuth, and a content of bismuth in each of the phases satisfies the following inequalities:
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Imai Osamu
Sato Ritsu
Lateef Marvin M.
NGK Insulators Ltd.
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