Intrinsically safe electrostatic assist units

Details Intrinsically safe electrostatic assist units Intrinsically safe electrostatic assist units

1979-10-30

1982-11-23

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 54, 361 55, H02H 900

Patent

active

043608507

ABSTRACT:
A high-voltage crowbar circuit continually senses the load impedance and crowbars the output voltage applied to a load if the load impedance falls below a selected value. A differentiator circuit at the load senses variations in load voltage and can trigger the crowbar operation if the voltage variation as a function of time exceeds a preselected load.

REFERENCES:
patent: 2928956 (1960-03-01), Jones
patent: 3477369 (1969-11-01), Adamson et al.
patent: 3517265 (1970-06-01), Bradford
patent: 3569784 (1971-03-01), Carroll et al.
patent: 3579036 (1971-05-01), McCoy
patent: 3619720 (1971-11-01), Coberley
patent: 3725739 (1973-04-01), Griffey
patent: 3777216 (1973-12-01), Armstrong
patent: 4075677 (1978-02-01), Bentley
patent: 4157578 (1979-06-01), Gyursanszky

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