Protective circuitry for high-energy transients

Details Protective circuitry for high-energy transients Protective circuitry for high-energy transients

1989-11-06

1990-07-31

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, 361113, 361120, 361127, H02H 904

Patent

active

049454420

ABSTRACT:
A protective circuit utilizing a variable impedance. In one aspect, where a spark gap is utilized, a low impedance capacitor connected to the electrodes forming the gap by low impedance leads operates to terminate an arc passing across the gap when the voltage is reduced below a predetermined breakdown voltage. In another aspect, a varistor is utilized. A pair of input and output terminals is spaced a selected distance apart to improve performance at high frequencies. A permanent short is created if the varistor is destroyed by a high-energy transient.

REFERENCES:
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patent: 1966077 (1934-07-01), Nyman
patent: 2208399 (1940-07-01), Slepian
patent: 3246206 (1966-04-01), Chowdhuri
patent: 3566197 (1971-02-01), Nilsson
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patent: 3654511 (1972-04-01), Iwaya
patent: 3673459 (1972-06-01), Carpenter
patent: 3777179 (1973-12-01), Lutz
patent: 3809959 (1974-05-01), Pucher
patent: 4233641 (1980-11-01), Baumbach
patent: 4652964 (1987-03-01), Ziegenbein

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