Method of and apparatus for controlling turntable speed

Details Method of and apparatus for controlling turntable speed Method of and apparatus for controlling turntable speed

1976-12-10

1978-03-21

Stephan, Steven L.

Undertaking

274 39A, 318313, G11B 1924

Patent

active

040799425

ABSTRACT:
The linear speed of a disc on a turntable with respect to the stylus of a pick-up device is maintained constant regardless of the radial position of the stylus. The speed control is accomplished through the use of a sensor mounted on a low-mass rod which is connected to and pivots about the same vertical axis as the stylus arm. The sensor is located below the turntable and provides pulses commensurate with radiation received from a timing disc on the underside of the turntable. The sensor produced pulses are delivered to electronic circuitry which continuously measures the linear speed of the timing disc, compares the measured speed to a reference standard, and adjusts the turntable electronically to keep the linear speed constant.

REFERENCES:
patent: 3105692 (1963-10-01), Berggren
patent: 3514685 (1970-05-01), Burgess

Affiliated with

Also associated with

Rating

Method of and apparatus for controlling turntable speed does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of and apparatus for controlling turntable speed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for controlling turntable speed will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-567369