Brief single supply op amp current source – LM358 operational amplifier

Table of Contents

You can easily set a current from an op amp output and a varying load by feeding the load current back to the inverting (-) input and then through a current setting resistor. The voltage at the non inverting (+) input will be the voltage that is set across the current setting resistor within op amp limits as long as enough voltage is applied.

Diagram

Simple single supply op amp current source circuit schematic diagram by electronzap electronzapdotcom
Simple single supply op amp current source circuit schematic diagram by electronzap electronzapdotcom

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Really easy to use USB multimeter tester used in a number of my videos.

Video

Quick voltage follower using single supply op amp LM358 operational amplifier

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  • Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.