Power line protection devices and methods

Details Power line protection devices and methods Power line protection devices and methods

1998-08-03

2000-06-06

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361103, 361100, H02H 504

Patent

active

060726814

ABSTRACT:
The present invention provides a simple, low cost power line protection device and method suitable for protecting data bus and power lines such as in the USB (Universal Serial Bus) configurations and other power management circuits. In one embodiment of the invention, an improved protection device, controllable by a control circuit, for protecting a power line is provided. The device includes a switch for switching on and off power supplied on the power line, and a detector for detecting a fault condition, such as an overload condition, on the power line. The detector includes a positive temperature coefficient (PTC) resistor thermally coupled to the switch for causing the fault condition to be reported to the control circuit. In this way, when a fault condition occurs, the control circuit activates the switch to switch off power supplied on the power line.

REFERENCES:
patent: 3697863 (1972-10-01), Kilner
patent: 4075674 (1978-02-01), Squiers et al.
patent: 4281358 (1981-07-01), Plouffe et al.
patent: 5684663 (1997-11-01), Mitter

Affiliated with

Also associated with

Rating

Power line protection devices and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2219287