Combination load controller

Details Combination load controller Combination load controller

1993-12-03

1995-12-05

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 58, 361106, 361 27, H01H 942

Patent

active

054734959

ABSTRACT:
A combination load controller for controlling application of power to a load such as a motor, has an input terminal coupleable to a power source, and an output terminal coupleable to a load. A conductive polymer and a protective, electromagnetic switch are disposed along a current path between the input and output terminals. The conductive polymer has a relatively low electrical resistance during conduction at nominal currents. The resistance of the conductive polymer increases substantially promptly upon conduction of excessive current, e.g., due to a short-circuit. In this manner the load is protected from even short bursts of excessively high, short-circuit current by the insertion of additional series resistance by the conductive polymer. The electromagnetic switch protects the line and load by opening the current path. The switch includes a current or voltage sensor coupled to a logic controller that opens the switch if over-current or under-voltage conditions persist for a predetermined period.

REFERENCES:
patent: 4164000 (1979-08-01), Woods
patent: 4237508 (1980-12-01), Woods et al.
patent: 4413301 (1983-11-01), Middleman et al.
patent: 4545926 (1985-10-01), Fouts, Jr. et al.
patent: 4560498 (1985-12-01), Horsma et al.
patent: 4775778 (1988-10-01), van Konyenburg et al.
patent: 4780598 (1988-10-01), Fahey et al.
patent: 4833565 (1989-05-01), Bauer et al.
patent: 5064997 (1991-11-01), Fang et al.
PCT Application Notes, Keystone Carbon Company Bulletin T-929, pp. 34-42, no date.

Affiliated with

Also associated with

Rating

Combination load controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1378329