Voltage-dependent resistor

Details Voltage-dependent resistor Voltage-dependent resistor

H - Electricity

01

C

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H01C 7/10 (2006.01) H01C 7/112 (2006.01) H01C 17/065 (2006.01) H01C 17/28 (2006.01)

Patent

CA 1061472

VOLTAGE-DEPENDENT RESISTOR Abstract of the Disclosure A voltage-dependent resistor comprising zinc oxide bulk is improved to withstand repetition of large impulse current surges by using special electrodes. The electrodes are produced by mixing 80 to 95% by weight of Bi203 and 5 to 20% by weight of SiO2, and further adding at least 1 to 5 parts by weight of B203 for each 100 parts by weight of the Bi203/SiO2 mixture. This mixture is fired and ground to form glass frit and then silver powder, resin and a solvent are added to the frit to form a silver paint, and the silver paint is then applied on two faces of the zinc oxide bulk and fired, thus forming the electrodes.

259580

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