Pulse-width and frequency modulator circuit

Details Pulse-width and frequency modulator circuit Pulse-width and frequency modulator circuit

1975-10-31

1976-11-30

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307229, 328127, 328147, 332 9T, H03K 116

Patent

active

039951782

ABSTRACT:
A very accurate, low-offset switching circuit is provided. The switching circuit is used in a modulator which permits output pulses to be modulated in width and/or frequency. The reversible output signals of the switching circuit are added to the modulating input signal and the sum is integrated. A level detector changes the polarity of its output voltage whenever the output of the integrator reaches either of two fixed levels. The output of the level detector is used to drive the field-effect transistors to control the switching of the output of the differential amplifier.

REFERENCES:
patent: 3749942 (1973-07-01), Moses
patent: 3814352 (1974-06-01), Grimes
patent: 3835402 (1974-09-01), Kublick
patent: 3835419 (1974-09-01), Milne et al.

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