Circuit arrangement for equalizing waveforms of push-pull power

Details Circuit arrangement for equalizing waveforms of push-pull power Circuit arrangement for equalizing waveforms of push-pull power

1981-03-26

1982-09-21

Pellinen, A. D.

Electric power conversion systems

Current conversion

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

363 97, 363134, H02P 1320

Patent

active

043510205

ABSTRACT:
Two power transistors operating in push-pull, connected in series with respective halves of a transformer primary across a d-c source, are alternately rendered conductive by driving pulses generated during fractions of corresponding half-cycles of a square-wave oscillator. Two integrating networks, connected across these primary halves or across resistors in series therewith, work into a comparator whose output signal, reflecting a dissymmetry between the transistor currents, unbalances the square-wave oscillator to vary the relative width of the two sets of driving pulses until the dissymmetry substantially disappears.

REFERENCES:
patent: 3873903 (1975-03-01), Koetsch et al.
patent: 4150424 (1979-04-01), Nuechterlein
patent: 4150426 (1979-04-01), Jansson
patent: 4162524 (1979-07-01), Jansson
patent: 4233658 (1980-11-01), Lupatin et al.

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