Methods and apparatus for controlling power amplifiers driving h

Details Methods and apparatus for controlling power amplifiers driving h Methods and apparatus for controlling power amplifiers driving h

1989-08-31

1990-06-12

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323356, 330 85, 324309, G05F 144

Patent

active

049336266

ABSTRACT:
Techniques for operating a power amplifier in driving a highly inductive load are provided. More particularly, the voltage across a coil load is integrated to obtain a signal representative of the flux and this signal is fed back as an error signal to the power amplifier to conform the instantaneous flux to the input voltage of the power amplifier. Since the power amplifier is operated in a voltage output mode and the flux is forced to conform to the input voltage, the effects of eddy currents are automatically compensated for while the power amplifier displays maximum bandwidth for pulse and sinusoidal input sequences.

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patent: 4291276 (1981-09-01), Ida
patent: 4503289 (1985-03-01), Spires
patent: 4546318 (1985-10-01), Bowden

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