VERTICAL_ACCELERATION_RECORDER

Published:2009/7/20 1:40:00 Author:Jessie | From:SeekIC

Accepts phase-reversible 40-cps signal from vertical accelerometer, which is in phase with reference voltage for positive accelerations and 180°out of phase for negative. After amplification by Q1-Q2, synchronous demodulator diodes D1 to D8 separate positive and negative signals for output transistors Q3 and Q4, which feed servo of engraved-foil flight recorder.-H. E. Schauwecker, Data Recorder for Airplane Flight Analysis, Electronics, 33:48, p 118-120.



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