Protection circuit for a power switching device

Details Protection circuit for a power switching device Protection circuit for a power switching device

2006-05-16

2006-05-16

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

Reexamination Certificate

active

07046494

ABSTRACT:
A protection circuit for a power switching device of the type configured to supply load current to an electrical load from a voltage source. The protection circuit includes a voltage drop sensing circuit connected in parallel with the switching device to sense a voltage drop across the switching device. A limit circuit is connected to the voltage drop sensing circuit and operates to inhibit further flow of load current through the switching device in relation to the sensed voltage drop. The limit circuit limits the load current to different maximum values for different sensed voltage drop values. This enables the load current to be limited to a lower value in the event an electrical short occurs across the load, reducing the amount of power dissipated by the switching device.

REFERENCES:
patent: 4553084 (1985-11-01), Wrathall
patent: 5504448 (1996-04-01), Bennett et al.
patent: 5579193 (1996-11-01), Schmidt et al.
patent: 5737169 (1998-04-01), Sellers
patent: 5793589 (1998-08-01), Friedl
patent: 5861737 (1999-01-01), Goerke et al.
patent: 6137668 (2000-10-01), Feldtkeller
patent: 6169439 (2001-01-01), Teggatz et al.
patent: 6218888 (2001-04-01), Otsuki
patent: 6225797 (2001-05-01), Willis et al.
patent: 6269011 (2001-07-01), Ohshima
patent: 6285177 (2001-09-01), Mallikarjunaswamy et al.
patent: 6381152 (2002-04-01), Takahashi et al.
patent: 6400163 (2002-06-01), Melcher et al.
patent: 6420832 (2002-07-01), Rabine
patent: 6466422 (2002-10-01), Luo

Affiliated with

Also associated with

Rating

Protection circuit for a power switching device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protection circuit for a power switching device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection circuit for a power switching device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3562252