Snubber energy recovery circuit for protecting switching devices

Details Snubber energy recovery circuit for protecting switching devices Snubber energy recovery circuit for protecting switching devices

1993-02-04

1995-08-22

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

363 50, 363 55, H02H 7122

Patent

active

054445949

ABSTRACT:
A snubber energy recovery circuit for protecting switching devices from current and voltage, which comprises a snubber circuit connected in parallel with a switching device, a recovery path for recovery the energy stored in the snubber circuit, and a constant-current source for maintaining current flowing in the recovery path at a constant value. The snubber circuit is composed of a snubber diode and a snubber capacitor, with one end of the recovery path being connected to the junction point of the snubber capacitor and snubber diode.

REFERENCES:
patent: 4310866 (1982-01-01), Wirth
patent: 4535378 (1985-08-01), Endo
patent: 4546423 (1985-10-01), Seki
patent: 4566051 (1986-01-01), Komulainen
patent: 5031088 (1991-07-01), Tanaka

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