Tape deck with take-up reel rotation sensor configured to...

Details Tape deck with take-up reel rotation sensor configured to... Tape deck with take-up reel rotation sensor configured to...

G - Physics

11

B

352/21.2

G11B 15/29 (2006.01) B65H 59/38 (2006.01) C03B 1/02 (2006.01) G11B 15/43 (2006.01) G11B 23/087 (2006.01)

Patent

CA 1229914

-15- Abstract A tape deck, which incorporates a non-contacting take-up reel rotation sensing means and associated sensing circuit for enabling the capstan and take-up reel drive mechanism. A magnetic field sensor is positioned across an air gap from a take-up reel mounted magnet to sense the pulsating magnetic field and control operation of the sensing circuit. A magnetic field interrupting means is caused to assume a non-interrupting position when the take-up reel is rotated in its proper direction and to assume a magnetic field interrupting position between the magnetic and the magnetic field sensor when the take-up reel and magnet are caused to be rotated in the opposite direction.

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