Active snubber device for power modules

Details Active snubber device for power modules Active snubber device for power modules

1997-01-10

1999-07-13

Medley, Sally C.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 91, 361 92, H02H 320

Patent

active

059235136

ABSTRACT:
A snubber device for a power switch comprising a sensing device coupled in the output circuit of the power switch, the sensing device having a reference input and providing an output indicating if a transient pulse of a magnitude greater than a preset range occurs in the output circuit of the power switch. A further electronic switch is provided having an input coupled to an output of the sensing device and coupled across the power switch, the further electronic switch being turned on by the sensing device in the event the sensing device detects a transient pulse beyond the preset range, thereby completing a shunt circuit across the electronic switch and dissipating the transient pulse.

REFERENCES:
patent: 4697219 (1987-09-01), Mitsuoka
patent: 4700256 (1987-10-01), Howell
patent: 5436786 (1995-07-01), Pelly et al.

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