Rotation position detector using stationary and rotatable disk p

Communications: electrical – Continuously variable indicating – With particular transmitter

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Details

324 61R, 340347P, G08C 1910

Patent

active

044183488

ABSTRACT:
A rotation detection apparatus has a first input side disk plate having first and second circumferentially arranged electrodes. An output side second disk plate has electrodes arranged in a circumferential direction to oppose the first plate. One of the disk plates is stationary and one is rotatable. A circuit is provided for supplying a periodic signal of a predetermined period to the first and second electrodes of the first plate. A rotation signal generating circuit is provided for detecting a phase condition between the signal at the electrodes of the second plate and the signal from the periodic signal supplying circuit and generating a rotation signal. A signal transmission device is also provided for transmitting a signal between the rotating plate and the stationary plate.

REFERENCES:
patent: 3222668 (1965-12-01), Lippel
patent: 3355806 (1967-12-01), Brook
patent: 3702467 (1972-11-01), Melnyk
patent: 3760392 (1973-09-01), Stich
patent: 3938113 (1976-02-01), Dobson et al.
patent: 3961318 (1976-06-01), Farrand et al.
patent: 4092579 (1978-05-01), Weit

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