Expandable uninterruptible power supply system

Details Expandable uninterruptible power supply system Expandable uninterruptible power supply system

1996-03-21

1997-10-14

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 56, H02M 3335

Patent

active

056778317

ABSTRACT:
An uninterrupted power supply system including a square wave oscillator, a square wave drive, a negative wave drive, a first bridge drive, a second bridge drive, a bridge circuit, a R/C low pass filter, an overload protection circuit, a high-voltage generator, and a full-wave rectifier, wherein the bridge circuit consists of pairs of oxide metal field effect transistors (insulated-gate semiconductors) respectively connected by bridging for the conversion of DC power supply into AC power supply; the high-voltage generator and the bridge circuit are mounted on an expansion card so that the output power of the system can be expanded by installing additional expansion cards.

REFERENCES:
patent: 4679130 (1987-07-01), Moscovici
patent: 5285372 (1994-02-01), Huynh et al.

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