Pulse width modulated signal amplifier

Details Pulse width modulated signal amplifier Pulse width modulated signal amplifier

1975-12-16

1976-12-21

Mullins, James B.

Amplifiers

Miscellaneous

Amplifier protection means

330 10, H03F 338

Patent

active

039991431

ABSTRACT:
A pulse width modulated signal amplifier includes a pair of transistors, each having a base, an emitter, and a collector. The bases are supplied with a pulse width modulated signal to be amplified, and the emitters are connected to each other and to an output terminal. A low pass filter connects the output terminal to a load. The collectors are connected to first and second terminals of a DC power source through first and second DC voltage sources, respectively, and first and second diodes are connected between the connection point of the emitters and corresponding terminals of the DC power source, respectively. First and second voltage limiting circuits are provided between the bases of the first and second transistors and corresponding terminals of the DC power source so as not to produce a longitudinal amplitude distortion in response to the switching operation of the first and second transistors.

REFERENCES:
patent: 3585517 (1971-06-01), Herbert

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