High power and/or high voltage switching operational amplifier

Details High power and/or high voltage switching operational amplifier High power and/or high voltage switching operational amplifier

1980-06-09

1982-04-20

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330293, 330207A, 330251, H03F 338, H03F 134, H03F 3217

Patent

active

043261701

ABSTRACT:
There is disclosed a high power and/or high voltage switching operational amplifier arrangement having a comparator with a first input for a low frequency AC signal. The output of the comparator is connected with the data input of a bistable element. The bistable element is triggered by a clock pulse signal with a rate substantially higher than the frequency of the AC input signal. An amplifying stage arranged between both poles of a high power and/or high voltage source is composed of a pair of alternately operating switch means, each arranged between a respective pole of the voltage source and a common amplifier stage output. Each of the switch means is coupled by a control input to at least one of the outputs of the bistable element. A low pass filter network coupled to the amplifier stage output forms the output stage of the operational amplifier arrangement. Means for providing feedback are arranged between the filter network and a second input of the comparator.

REFERENCES:
patent: 3636380 (1972-01-01), Anderson

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