Phase-adjusting device for parallel-resonant circuit frequency converters
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United States of America Patent
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Nov 3, 1987
Grant Date -
N/A
app pub date -
Jan 9, 1987
filing date -
Jan 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a phase-adjusting device for the inverter, having controllable semiconductors, of a parallel-resonant circuit frequency converter. The phase-adjusting device, operating on the PLL principle, compares a signal derived from the inverter output voltage and a signal delayed by a predetermined amount in relation to the control pulses of the oscillator 1 to a phase-comparing stage. In dependence on the phase comparison of the two signals, the oscillator frequency is so adjusted that the inverter output voltage and the inverter output current are in phase.
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