Electrical circuit protection system

Details Electrical circuit protection system Electrical circuit protection system

2007-09-11

2007-09-11

Leja, Ronald W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

C361S093900

Reexamination Certificate

active

10480904

ABSTRACT:
A system to protect electrical circuits from rapid changes of voltage associated with a fault in an electrical load comprises an inductor placed in series between a drive circuit and load. The inductor is designed to be inefficient or lossy when the inductor core is magnetised. Magnetisation of the core only occurs when a rapid change in voltage is applied across the inductor coils. Because the inductor is inefficient, the induced impedance in the inductor increases rapidly during a fault event. The overall impedance of the circuit increases rapidly and the rapid change in voltage is dissipated at a rate associated with the CR constant of the circuit.

REFERENCES:
patent: 2137433 (1938-11-01), Wirz
patent: 2579978 (1951-12-01), Louis et al.
patent: 2665406 (1954-01-01), Carmichael
patent: 2891883 (1959-06-01), Howe
patent: 3423710 (1969-01-01), Allen
patent: 3628132 (1971-12-01), Fussell et al.
patent: 4031457 (1977-06-01), Oberbeck
patent: 4122385 (1978-10-01), Oberbeck
patent: 4695917 (1987-09-01), Jackson et al.
patent: 4760484 (1988-07-01), Walker
patent: 4803378 (1989-02-01), Richardson
patent: 5808495 (1998-09-01), Yoshihara et al.
patent: 6066901 (2000-05-01), Burkhart et al.

Affiliated with

Also associated with

Rating

Electrical circuit protection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical circuit protection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical circuit protection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3740206