LM317 Audio Amplifier Circuit

Published:2013/11/21 0:20:00 Author:lynne | Keyword: Audio Amplifier | From:SeekIC

You probably know that LM317 IC is used as an adjustable voltage regulator, but did you know it can be used as an audio amplifier? This is a class A audio amplifier built with LM317 that delivers a maximum 1W audio power. Use a good heatsink for the LM317 IC and adjust the 5K variable resistor so that you have 4.5V on 10Ω resistor (or LM317 pin 2, Vout). LM317 amplifier schematic



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