Power converter

Details Power converter Power converter

2008-01-22

2008-01-22

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C361S111000

Reexamination Certificate

active

10564232

ABSTRACT:
A power converter comprising: a rectifier arrangement (D1-D4) having inputs coupled to AC power supply terminals; a pair of series-connected capacitors (C1, C2) coupled across output terminals of the rectifier arrangement; a switch (S1) coupled between one of said AC power supply terminals and a midpoint of the pair of series-connected capacitors, the switch being open if a first AC voltage is applied to the AC power terminals, and the switch being closed if a second AC voltage is applied to the AC power terminals, the first AC voltage exceeding the second AC voltage; and an overvoltage protection circuit (D5, R30, D6) coupled between at least one of the inputs of the rectifier arrangement and the midpoint of the pair of series-connected capacitors.

REFERENCES:
patent: 4864488 (1989-09-01), Bulmahn et al.
patent: 5162984 (1992-11-01), Castagnet et al.
patent: 5510944 (1996-04-01), Mozar et al.
patent: 5933342 (1999-08-01), Callanan
patent: 6219263 (2001-04-01), Wuidart
patent: 1 315 276 (2003-05-01), None

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