Intelligent solid state relay/breaker

Details Intelligent solid state relay/breaker Intelligent solid state relay/breaker

2007-12-04

2007-12-04

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

Reexamination Certificate

active

10946841

ABSTRACT:
A solid-state relay/breaker that can replace mechanical units to control any type of AC or DC load. Power MOSFETs or other transistors control a load current. A bypass current sensing path monitors MOSFET current and causes a shutdown through signal processing in the event of an over-current condition. This shutdown resembles that of a slow-blow fuse where the rate of shutdown is proportional to the value of the current. This prevents shutdown on momentary spikes or in-rush. In addition, temperature and internal power supply voltages are monitored to determine additional operational conditions where over-temperature or voltages out of range can also cause shutdown. The MOSFET and current sensing path are turned on and off in staggered timing with different slew rates to provide built-in hysteresis. The device can be manufactured in any type of package to match any type of environment or existing replacement requirement.

REFERENCES:
patent: 4291357 (1981-09-01), Hong
patent: 6433978 (2002-08-01), Neiger et al.
patent: 6466060 (2002-10-01), Lee
patent: 6520279 (2003-02-01), Fukumoto et al.
patent: 2003/0095367 (2003-05-01), Mares et al.
U.S. Appl. No. 11/496,362.

Affiliated with

Also associated with

Rating

Intelligent solid state relay/breaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intelligent solid state relay/breaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intelligent solid state relay/breaker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3835723