Varistors with controllable voltage versus time response and met

Details Varistors with controllable voltage versus time response and met Varistors with controllable voltage versus time response and met

1983-05-31

1984-07-31

Beha, Jr., William H.

Electrical transmission or interconnection systems

Wave form or wave shape determinative or pulse-producing...

307268, H03K 336

Patent

active

044632681

ABSTRACT:
A bismuth-free, zinc oxide based varistor exhibits a controllable overshoot/undershoot voltage characteristic. The varistor is composed of zinc oxide as the primary constituent, with smaller quantities of barium, boron, one or more transition elements and aluminum. Varistor voltage versus time response is dependent on the degree of aluminum doping. Typically, more than approximately 0.003 mole percent, but less than approximately 0.1 mole percent aluminum is employed, depending on desired voltage overshoot/undershoot characteristic. Varistors having a controllable voltage versus time response are used in a method for providing a rectangular voltage pulse in response to a current input.

REFERENCES:
patent: 3056046 (1962-09-01), Morgan

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