Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1978-03-31
1980-02-26
Corcoran, Robert J.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
G01R 2726
Patent
active
041907973
ABSTRACT:
A capacitive gauging apparatus in which a single central processing unit is connected to a plurality of gauging heads each gauging head having a further plurality of gauging probes. The system then multiplexes the probes and heads to enable the central processing unit to receive serially the output from each of the heads and produce an analog or digital signal which indicates distance between each of the probes and the work piece. A central microprocessor transforms these signals into an output for visual display or calculates the difference between these signals and an ideal master work piece. Further, a highly temperature stable, low capacitance, high impedance amplifier is used in conjunction with each of the probes so that the output signal from each of the probes is stable and accurate over a wide range of conditions.
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National Semiconductor Linear Applications, Feb. 1970, p. 7.
Bowers John J.
Lecklider Thomas H.
Baumann Russell E.
Corcoran Robert J.
Gould Inc.
Kocovsky, Jr. Thomas E.
Snee, III Charles E.
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