Turntable rotation control device

Details Turntable rotation control device Turntable rotation control device

1978-09-19

1980-03-04

Haroian, Harry N.

Undertaking

274 23R, G11B 1706

Patent

active

041913825

ABSTRACT:
A turntable rotation control device has an electric motor reversibly rotatable. A mechanism is used for horizontally swinging a tone arm towards the inner circumference of a record by the rotation of the motor in a first direction. A second mechanism is employed for horizontally swinging the tone arm towards the outer circumference of the record by the rotation of the motor in a second direction. A first signal generating device generates a signal to rotate the motor in the first direction and a second signal generating device is employed for generating a signal to rotate the motor in the second direction a detecting circuit senses when the tone arm has been swung horizontally from the initial position at an arm rest and an OR gate circuit generates an output of a logical sum of an output signal of the first signal generating circuit and an output signal of said detecting circuit. A device circuit is driven by an output of said OR gate circuit to control the rotation of the turntable.

REFERENCES:
patent: 4049279 (1977-09-01), Kleis

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