Power line surge suppressor

Details Power line surge suppressor Power line surge suppressor

1988-09-02

1989-09-26

Deboer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361111, 361118, H02H 904

Patent

active

048705349

ABSTRACT:
A surge suppressor for repeatedly protecting a load against surges occurring on A-C power mains from lightning surges or the like comprises a first series circuit having a first inductance and a first alternating voltage limiter, including at least a first capacitance and a bidirectionally conductive rectifier circuit, coupled between first and second input terminals. The first inductance conducts substantially all of the current supplied from the A-C power mains. A second series circuit comprising a second inductance and second alternating voltage limiter, including at least a second capacitance and a second bidirectionally conductive rectifier circuit, is coupled across the first alternating voltage limiter and is coupled to first and second output terminals. The first series circuit is arranged for limiting surge currents and voltage excursions passed to the second series circuit to first levels while the second series circuit is arranged for further limiting surge currents and voltage excursions passed to the output terminals to second levels less than first levels.

REFERENCES:
patent: 4434396 (1984-02-01), Montague
patent: 4751607 (1988-06-01), Smith

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