- Published in issue 7/1991 on page 44
Voltage-controlled current source
The source, based on a Type TL084 quadruple opamp, is intended to convert an input signal of 0-5 V into a current of G-20 mA. This type of circuit is used, for instance, to transfer measurands (quantities being measured) over long leads. Since the resistance of the leads is part of the current loop, it is of no consequence and can not affect the measurement.