Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1981-04-06
1984-05-22
Albritton, C. L.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
252518, 361127, H01C 712
Patent
active
044504268
ABSTRACT:
A nonlinear resistor comprising a sintered body containing zinc oxide as a major component and at least bismuth oxide and boron oxide and electrodes formed thereon, said sintered body having a higher .gamma.-form bismuth oxide phase concentration in upper and/or lower surface layers of the sintered body than in the inner portion of the sintered body, has stabilized properties against long-time voltage application. When the sintered body is further modified by making the .gamma.-form bismuth oxide phase concentration in the periphery portions of the upper and/or lower surface layers lower than that in the inner portions of the upper and/or lower surface layers, the resulting nonlinear resistor shows a higher long-duration current impulse withstand capability.
Maeda Kunihiro
Miyoshi Tadahiko
Oowada Siniti
Takahashi Ken
Yamazaki Takeo
Albritton C. L.
Hitachi , Ltd.
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