DC VOLTAGE TRANSDUCER

The dc voltage is signal conditioning circuit which accepts high level input from a variety of transducers to control a standard signal. The measured value is first converted to a dc Voltage, amplified by an operational amplifier and then chopped to produce a square wave of amplitude proportional to the dc voltage. This is photo coupled to a second chopper circuit which converts the square wave back to dc Voltage. This is then filtered and amplified to produce a load independent dc output proportional to measured input.