Tone arm assembly

Details Tone arm assembly Tone arm assembly

1979-05-08

1980-12-30

Haroian, Harry N.

Undertaking

G11B 310

Patent

active

042419263

ABSTRACT:
Apparatus for controlling a tone arm is provided with a horizontal drive motor for moving the tone arm in the horizontal direction, a horizontal velocity detector connected to the same rotating shaft as the tone arm so as to move concurrently with both the tone arm and the horizontal drive motor, a control circuit having a motional feedback loop to energize the horizontal drive motor in accordance with a desired pre-set velocity signal and a fedback detected velocity signal.

REFERENCES:
patent: 4138121 (1979-02-01), Nakajima
patent: 4170360 (1979-10-01), Ohsawa

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