LOW_COST_BAR_GRAPH_INDICATOR_FOR_AC_SIGNALS

Published:2009/7/1 22:15:00 Author:May | From:SeekIC

Indicator was designed for displaying the peak level of small ac signals from a vanety of transducers including microphones，stram gauges and photodiodes．The circuitresponds to input signals contained within the audio frequency spectrum, i.e.，30 Hz to 20 kHz，although a reduced response extends up to 40 kHz.Maximum sensitivityfor the component values shown，with VR1 fully clockwise，IS 30 mV peak-to-peak．The indicator can be calibrated by setting VR1 when an appropriate input signal is applied．



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