IC output circuit for use in pulse width modulator

Details IC output circuit for use in pulse width modulator IC output circuit for use in pulse width modulator

1988-01-06

1989-05-16

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

318599, H03K 708

Patent

active

048313440

ABSTRACT:
According to the present invention, an output transistor on the power supply side Vcc is composed of an NPN type transistor whose base is driven by a PNP type transistor with a diode in its collector-to-emitter path to prohibit its saturation. Another output transistor on the power supply side GND is similarly composed of an NPN type transistor. The above two drive circuits are combined to set up an output circuit for pulse width modulation.

REFERENCES:
patent: 4081731 (1978-03-01), Wesner
patent: 4654566 (1987-03-01), Erdman

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