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MOTOR_NOISE_ACTUATES_MUTING_SYSTEM

2016-09-04 21:40  
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MOTOR_NOISE_ACTUATES_MUTING_SYSTEM
Noise pulses from commutator-type tuning motor in receiver ate rectified and used to bias audio stage to cutoff for as long as tuning motor is running. Audio amplifier re mains cut off for about 0.25 sec after motor stops.-Muting System for Motor-Tuned Receivers, Electronic Circuit Design Handbook, Mactier Pub. Corp, N.Y. 1965, p 51.