Power surge protection circuit

Details Power surge protection circuit Power surge protection circuit

1989-02-27

1991-03-12

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 56, 361 60, 361 75, 361111, 340663, H02H 326

Patent

active

049997289

ABSTRACT:
A circuit for protecting electronic equipment such as computers, laser printers, fax machines, and the like from damage due to electrical transients associated with a temporary power interruption is connectable between a source of A.C. power and the electronic equipment. The circuit disconnects the equipment from the power source during a temporary power outage and maintains the equipment disconnected from the A.C. power until transients in the line voltage have abated. The circuit reconnects the equipment to the A.C. power source after a preselected time delay from the initial power interruption. The circuit keeps track of time during a power interruption without the use of batteries.

REFERENCES:
patent: 3784846 (1974-01-01), Krick et al.
patent: 4394702 (1983-07-01), Boothe
patent: 4415943 (1983-11-01), Wortman
patent: 4473759 (1984-09-01), Mahabadi
patent: 4567539 (1986-01-01), Sinberg
patent: 4584623 (1986-04-01), Bello et al.
patent: 4598281 (1986-07-01), Maas
patent: 4621313 (1986-11-01), Kitely

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