SSB_AVERAGE_CURRENT_METER

Published:2009/7/21 21:08:00 Author:Jessie | From:SeekIC

Uses con-trolled time constant of 1/4 s to generate good approximation of average current in voice-modulated SSB signal. Circuit also gives peak current reading, with peaks measured and held for short time. Opamp isolates current from plate supply and converts it into signal that can be run through shaping network to get averages and peaks. D1-D7 are 1N3064 or equivalent. D1 and D2 eliminate spikes that might damage opamp R6 allows small adjustments of opamp gain, which is normally set at 100.-R Sans, Make Your Meter Readings Count,CQ.Dec.1972,P28－29.



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