Precision rectifier system with differential input and differential output

摘要

A precision rectifier system with differential input and differential output includes an input differential V/I converter responsive to a bipolar input signal voltage with respect to an input reference potential for providing a differential current representative of the magnitude of the input signal; a matching output differential V/I converter responsive to an output voltage signal with respect to an output reference potential for providing a differential current representative of the magnitude of the output voltage signal; amplifier means, responsive to a difference between the differential currents of the input and output V/I converters for adjusting the output voltage signal to null the differences between the differential currents; and switching means, responsive to the polarity of the bipolar input signal, for switching the polarity of the differential current representative of the magnitude of the input signal for maintaining a single polarity rectified output voltage signal.