US Patent: 3,600,692 - Phase Comparator Providing DC Output as a Function of Variable Phase Between Two Inputs


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US Patent: 3,600,692

Phase Comparator Providing DC Output as a Function of Variable Phase Between Two Inputs

Patentee:

John K. McGee (exact or similar names) - Houston, Harris County, TX

USPTO Classifications:

327/4

Tool Categories:

electrical devices : electronic circuitry and apparatus

Assignees:

Giddings & Lewis Machine Tool Co. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Oct. 17, 1969
Granted:	Aug. 17, 1971

Patent Pictures:

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"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

This is a division of applicant's co-pending application filed 03 June, 1966, now U.S. Pat. No. 3,539,895.

Abstract:

A phase discriminator for producing a DC voltage which varies in magnitude and polarity according to the sense and extent of the phase displacement between two recurring signals which may vary in phase relation to one another. The first signal may, for example, be a train of pulses and the second signal may be a recurring sinusoidal wave. A tristate DC signal producing circuit is controlled by the two signals and its output is supplied to an averaging filter.