Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1980-02-01
1982-02-16
Albritton, C. L.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
338309, 338328, H01C 710
Patent
active
043161715
ABSTRACT:
A novel non-linear resistance element or varistor element is provided by the invention. The body of the element is a ceramic sintered body mainly composed of titanium dioxide admixed with small amounts of oxides of niobium, tantalum and/or antimony and electrodes are provided with a metallic material. Different from the conventional varistor elements, the electrode is bonded to the sintered body with ohmic contact by the techniques of flame spraying or electroless plating depending on the kind of the metallic material for the electrode selected from silver, aluminum, nickel and the like. Further improvement is proposed to increase the bonding strength of lead wires on to the electrodes by soldering as accomplished by providing a layer of a material having good solder-receptivity on the electrode which also serves for preventing the oxidation of the electrode material.
REFERENCES:
patent: 2501322 (1950-03-01), Ferguson et al.
patent: 3503029 (1970-03-01), Matsuoka
patent: 3611073 (1971-10-01), Hamamoto et al.
patent: 3953375 (1976-04-01), Nagano et al.
patent: 4097834 (1978-06-01), Mar et al.
Kaji Takeyuki
Miyabayashi Susumu
Albritton C. L.
TDK Electronics Co. Ltd.
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