F/V circuit of encoder signals for AC and DC servo system
Zhao Hong-ju · Applied science and technology · 2005
The principles of an F/V converting circuit with polarity judgment are introduced. The circuit can output analog voltage signals with positive and negative polarity according to the phase relation of encoder signals of orthogonal output type. In order to solve the problem of voltage converting of optical encoder signals in AC and DC speed servo system, the double polarity F/V converting circuit is given based on LM2907.