Dual voltage converter circuit

Details Dual voltage converter circuit Dual voltage converter circuit

1985-08-02

1986-12-02

Salce, Patrick R.

Electric power conversion systems

Current conversion

With voltage division by storage type impedance

363126, 363143, 361150, 315 8, H02M 306

Patent

active

046269819

ABSTRACT:
A supply arrangement selectively operates from either one of dual AC mains supply voltages of, illustratively, 220 or 110 volt RMS AC. When the arrangement operates from the 220 volt AC mains supply voltage, a bridge rectifier, operating as a full-wave rectifier, charges each of series coupled first and second capacitors to one-half the peak of the AC mains supply voltage. During the positive half-period of the AC mains supply voltage, a positive voltage, equal to the difference between the instantaneous mains supply voltage and the DC voltage across the first capacitor is coupled between two terminals of a load such as a degaussing circuit. A corresponding negative difference voltage, is coupled between the two terminals during the other half-period. When the supply arrangement operates from the 110 volt AC mains supply voltage, the rectifier arrangement is reconfigured to permit the entire mains supply voltage to be coupled between two terminals of the load while enabling the bridge rectifier to operate as a voltage doubler.

REFERENCES:
patent: 3852655 (1974-12-01), Justice
patent: 4215392 (1980-07-01), Rhoads

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