Record player with start-stop control by means of a magnetic fie

Details Record player with start-stop control by means of a magnetic fie Record player with start-stop control by means of a magnetic fie

1978-08-07

1979-11-20

Phillips, Charles E.

Undertaking

274 15R, G11B 1706

Patent

active

041748417

ABSTRACT:
A record player motor is stopped by the detection of a magnetic field related to the movement of a pick-up arm by means of a Hall-effect cell, and is started by the influence of another magnetic field acting on the same Hall effect cell. A control circuit ensures that start and stop signals supplied by the Hall-effect cell are discriminated and supplied to start and stop switches respectively.

REFERENCES:
patent: 3503615 (1970-03-01), Matsuda
patent: 3599984 (1971-08-01), Kondo

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