Voltage to pulse-width conversion circuit

Details Voltage to pulse-width conversion circuit Voltage to pulse-width conversion circuit

1988-03-08

1990-01-02

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Particular output circuits for counter

377 42, 307265, 315291, 315DIG4, H03K 2108, H03K 526

Patent

active

048918288

ABSTRACT:
A voltage to pulse-width conversion circuit includes a counter which counts a reference frequency signal and produces a multi-bit digital value; a digital/analog converter which converts the digital value into an analog signal; and a voltage comparator which compares an output of the digital/analog converter with a control signal and produces a pulse width modulated output signal which has a predetermined duty cycle ratio.

REFERENCES:
patent: 3906247 (1975-09-01), Heffner
patent: 4028609 (1977-06-01), Detering
patent: 4241295 (1980-12-01), Williams
patent: 4287468 (1981-09-01), Sherman
patent: 4330751 (1982-05-01), Swain
patent: 4365202 (1982-12-01), Sinniger
patent: 4370067 (1983-01-01), Iwakura et al.
patent: 4396869 (1983-08-01), Rosenbaum et al.
patent: 4415861 (1983-11-01), Palmquist et al.
patent: 4754163 (1988-06-01), Aue et al.

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