SENSING_MUSCLE_TENSION

Published:2009/7/3 1:55:00 Author:May | From:SeekIC

Capacitive transducer of type used for measuring displacement and pressure is used to modulate 555 MVBR. Frequency is detected in NE560B PLL that produces DC output voltage. CF sets bandwidth of demodulated information. Zero-position frequency of transducer is measured at pin 12 of PLL, and VCO frequency of PLL is measured from pin 5 through 2N3393 emitter-follower stage.-R. M. Wise, Capacitive Transducer Senses Tension in Muscle Fibers, Electronics, June 26, 1975, p 97; reprinted in Circuits for Electronics Engineers, Electronics, 1977, p 349.



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