A Moving-Coil Feedback Disk Recorder
The distinctive feature of this recorder is the application of corrective feedback originating in the actual stylus-driving mechanism. Thus, the motion of the stylus is accurately controlled, irrespective of recording conditions, over a wide range of amplitudes and frequencies. The latest improvements are described and include a simple method of applying heat to the stylus and the use of tapered shank styli to facilitate their replacement.
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