Electrical transmission or interconnection systems – Wave form or wave shape determinative or pulse-producing...
Patent
1986-05-12
1987-04-14
Pellinen, A. D.
Electrical transmission or interconnection systems
Wave form or wave shape determinative or pulse-producing...
361179, 307116, 340686, H01H 3600
Patent
active
046581537
ABSTRACT:
The position sensor constitutes a fixed planar board having disposed on the surface serpentine coil structures of relatively low resistance and inductance. The coils are driven in a resonance mode which provides a frequency output according to the position of a moving planar member. The second movable planar board has disposed on the surface thereof planar loop coil structures. The second board is moved in proximity to the first board to vary the resonance characteristics of the first coil according to the position of the second board with respect to the fixed board. In this manner the frequency output of the system is a function of the position of the boards with respect to one another. Other embodiments depict means for compensating the thermal drifts of the frequency with respect to temperature.
REFERENCES:
patent: 3469204 (1969-09-01), Magyar et al.
patent: 3757245 (1973-09-01), Berger
patent: 3758845 (1973-09-01), Mackelvie et al.
patent: 4148008 (1979-04-01), Lask et al.
patent: 4425511 (1984-01-01), Brosh
patent: 4482816 (1984-11-01), Richardson et al.
Brosh Amnon
Fiori, Jr. David
DeBoer T.
Pellinen A. D.
Plevy Arthur L.
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