Voltage to pulse-width conversion circuit

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

1992-02-19

1994-01-11

Sikes, William L.

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

Particular output circuits for counter

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

Patent

active

052774970

ABSTRACT:
A voltage to pulse-width conversion circuit includes a logarithmic clock generator for receiving a reference frequency signal and generating a logarithmic clock signal TCK; a counter for counting the number of clock pulses of the logarithmic clock signal TCK and outputting a digital value having a plurality of bits; a digital to analog converter for converting the digital value into an analog signal; and a voltage comparator for comparing the output signal of the digital to analog converter with a pulse width modulated control voltage and generating a pulse width modulated output signal with a predetermined duty ratio.

REFERENCES:
patent: 4241295 (1980-12-01), Williams, Jr.
patent: 4370067 (1983-01-01), Iwakura et al.
patent: 4700367 (1987-10-01), Kawazoe et al.
patent: 4891828 (1990-01-01), Kawazoe
patent: 5073733 (1991-12-01), Tanno et al.
patent: 5113086 (1992-05-01), Cho

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