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Optimizing Tape Transport Motion Control Using Operational-Amplifier Analog Signal Processing

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The use of monolithic operational amplifiers to process analog velocity signals in all motional modes of a modern tape transport is discussed. Circuits include summing, splitslope, and absolute value amplifiers; pulse-width modulators; and a new ac motor control method.

JAES Volume 22 Issue 3 pp. 172, 174, 176, 178; April 1974
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AES - Audio Engineering Society