SOUND_LEVEL_METER

Published:2009/7/17 22:26:00 Author:Jessie | From:SeekIC

Two-transistor circuit takes high-impedance microphone feeding compound grounded-collector stage in which collector, emitter load, and biased resistor of Q1 are bootstrapped.-W. V Richings and B. J. White, Transistorized Sound Level Meter, Electronic, 33:25, p 64-66.



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