Low Power Op-Amp - Audio Amp (50 milliwatt) circuit


Posted on Feb 4, 2014

The example below illustrates using an op-amp as an audio amplifier for a simple intercom. A small 8 ohm speaker is used as a microphone which is coupled to the op-amp input through a 0.1uF capacitor. The speaker is sensitive to low frequencies and the small value capacitor serves to attenuate the lower tones and produce a better overall response..


Low Power Op-Amp - Audio Amp (50 milliwatt) circuit
Click here to download the full size of the above Circuit.




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