NE555 division circuit

Published:2011/8/19 1:48:00 Author:Jessie | Keyword: division | From:SeekIC

This circuit is composedof voltage - frequency converter and amplitude modulator. Input voltage V1 controls the resistance of mosfet 2N4222by op-ampA1, so can change the oscillation frequency ofastable multivibrator. A2 is amplitude modulator, the input signal outputafter modulated by V2. Set thepinch-off voltage is Vp, if you make (1+R1/R2)=Vp, then the relationship of input and output is Vo=-V2/V1. Request the range of V1 and V2 is 0 ~ 10V. Output Vo is averaged, which can be obtained by the filter and read through the damping type voltmeter.



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