Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Patent
1980-05-02
1982-12-28
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
361 8, 361 56, 307253, 323272, 323289, 363 55, H02H 720
Patent
active
043665225
ABSTRACT:
A high-power, solid-state switching circuit includes in a preferred embodiment a first switching device susceptible to damage from excessive peak power dissipation at times of turn-on and turn-off in switching high currents from a relatively high-voltage supply, the first switching device having its main current path connected in parallel with the main current path of a second switching device that is substantially less susceptible to such damage from excessive peak power dissipation, but which has a substantially higher impedance in its main current path than the first device when turned on, the devices complementing one another via the operation of said switching circuit for turning on the second device before the first device, thereby substantially lowering the voltage across the main current path of the first device, allowing the latter to be turned on and turned off with substantially reduced peak power dissipation via the snubbing effect of the second device, and the first device relative to the second device providing substantially reduced power dissipation during the on-state of the switching circuit.
REFERENCES:
patent: 3307044 (1967-02-01), Furukawa et al.
patent: 3402302 (1968-09-01), Coburn
patent: 3532903 (1970-10-01), Roth
patent: 3705333 (1972-12-01), Galetto et al.
patent: 3729655 (1973-04-01), Gratzke
patent: 4010387 (1977-03-01), Akamatsu
patent: 4013904 (1977-03-01), Chick
patent: 4042836 (1977-08-01), Compton et al.
patent: 4274014 (1981-06-01), Schade, Jr.
Lowe Allan M.
Reliance Electric Company
Salce Patrick R.
Stanley Ronald R.
Watov Kenneth
LandOfFree
Self-snubbing bipolar/field effect (biofet) switching circuits a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-snubbing bipolar/field effect (biofet) switching circuits a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-snubbing bipolar/field effect (biofet) switching circuits a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1340528