Tone arm control system

Details Tone arm control system Tone arm control system

1976-12-10

1978-09-05

Haroian, Harry N.

Undertaking

274 1R, G11B 310

Patent

active

041114337

ABSTRACT:
The cantilevered stylus is provided with transducers capable of sensing the subsonic spectrum and a constant deflection of the stylus in the horizontal as well as in the vertical plane to provide control voltages for powering a vertical torquer and a horizontal torquer which rotate the tone arm about its elevation and azimuth axes, respectively. A control circuit is provided for the torquers to achieve the necessary two-axes motion for cueing and record changing and to adjust the tracking force.

REFERENCES:
patent: 2952464 (1960-09-01), Stimler
patent: 3511509 (1970-05-01), Firestone
patent: 3623734 (1971-11-01), Sakamoto
patent: 3661397 (1972-05-01), Worth
patent: 3744802 (1973-07-01), Bowerman
patent: 3830505 (1974-08-01), Rabinow

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