Active discharge circuit for charged capacitors

Details Active discharge circuit for charged capacitors Active discharge circuit for charged capacitors

H - Electricity

02

H

H02H 3/02 (2006.01) H02M 7/155 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2156542

An active discharge circuit provides for the discharge of filter capacitors in a power supply in the absence of a.c. line power. A detector provides a signal responsive to the removal of the pulsating d.c. charging voltage from the capacitors and a switch responsive to the detector signal closes, coupling an energy dissipating element, in the form of a resistor or a transistor, across the filter capacitor to dissipate its stored energy.

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