Communications: electrical – Continuously variable indicating – With particular transmitter
Patent
1982-12-20
1985-12-31
Caldwell, Sr., John W.
Communications: electrical
Continuously variable indicating
With particular transmitter
308 10, 324 61R, G08C 1910
Patent
active
045624305
ABSTRACT:
A device comprising a capacitive transducer comprised of a fixed member comprising first and second axially separated equal diameter metallic electrode rings and a movable member comprised of a thin walled metallic cylinder separated from the fixed member by an annular gap such that said movable member capacitively couples said first and second rings of the fixed member. The first ring of the fixed member is comprised of a continuous metallic ring glued onto an insulating supporting means, and the second ring is comprised of four thin metal foil electrodes separated by four equi-width narrow gaps spaced at angular intervals of 90.degree. and glued onto an insulating supporting means. The first electrode ring of the fixed member is electrically connected to an alternating current power source and each pair of diametrically opposed electrodes of the second ring of the fixed member are electrically connected to a position control loop circuit.
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Millman and Halkias, Integrated Electronics: Analog and Digital Circuits and Systems, McGraw-Hill, 1972, pp. 501-503, 539-540.
Agence Spatiale Europeenne
Caldwell Sr. John W.
Heim Michael F.
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