QUADRATURE_SUPPRESSION

Published:2009/7/23 23:26:00 Author:Jessie | From:SeekIC

Two pairs of thermistor potentiometers balance the in-phase and quadrature components of input current, which are in phase and in quadrature with a-c reference of the same frequency, to permit displaying components simultaneously on two ac meters. Circuit and values for demodulators and preamplifier are same as for THERMISTOR CONTROL circuit.-I. C. Hutcheon, Using Thermistors as Servo Elements, Electronics, 34:5, p 52-55.



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