The Application of Simple Adjustable Electric Current Source
Sun Qi-fei · Journal of Xingtai Polytechnic College · 2009
This article describes the use of the LM358 operational amplifier consisting of integrated adjustable constant current source,where the use of 0～5V adjustable voltage output 4～20mA linear change in current.Using of the circuit can be quite expensive to replace the current integrated chip VI.The circuit structure is simple and non-production components in general,can be widely applied to the data acquisition system as a calibration signal source,and the experiment proved safe and reliable circuit.