Flyback modulated switching power amplifier

Details Flyback modulated switching power amplifier Flyback modulated switching power amplifier

1984-02-28

1986-02-18

LaRoche, Eugene R.

Amplifiers

Modulator-demodulator-type amplifier

330251, H03F 338

Patent

active

045715513

ABSTRACT:
A flyback modulated switching power amplifier is described. The amplifier employs a waveform generator to produce an input signal and power switches capable of controlled conduction in one direction and uncontrolled conduction in the other. An inductor is coupled to the power source through the power switches so that flyback current can flow through a switch in its uncontrolled direction from the inductor when the switch is turned off. A conduction feedback circuit detects conduction by the switches and a comparator detects whether the output is "too high" or "too low" relative to the input signal. A logic control selectively activates the switches to control the output voltage, but not until the last switch to be turned off has stopped all conduction, including flyback conduction.

REFERENCES:
patent: 4326170 (1982-04-01), Levy

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