Division Circuit Composed of NE555

Published:2011/7/27 5:38:00 Author:Sue | Keyword: Division Circuit | From:SeekIC

The picture shows the division circuit composed of voltage-frequency converter and amplitude modulator. The input voltage V1 controls field effect tube 2N4222's inner resistance value through operational amplifier A1, so the oscillate frequency of the nonstable multivibrator will be changed.A2 is the amplitude modulator. After the input signal V2 is modulated, it will be output. Presume field effect tube's pinch-off voltage is Vp. If Vp=(1+R1/R2), then the relation between input and output is : Vo=-V2/V1. V1 and V2 are required to have a range of 0-10V. The output Vo is an average value which can be obtained through the filter. It can also be obtained by reading the damped voltmeter.



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