Low power audio amplifier

Posted on Aug 9, 2012

The amplifier operates from supplies ranging up to 12 volts, and operates (with reduced volume) from supply voltages as low as 1.8 volts without having distortion rise to unacceptable levels. (Its power requirements make it suitable for solar-cell application.) Components external to the integrated circuit, Ul, consist of four capacitors and a potentiometer for volume control.

Low power audio amplifier
Click here to download the full size of the above Circuit.

Capacitor C3 is for decoupling, low-frequency roll-off, and power-supply ripple rejection. Capacitor C4 is an electrolytic type that couples the audio output to an 8 to 32 ohm speaker that is efficient.

Leave Comment

characters left:

New Circuits



Popular Circuits

Audio Power Limiter
Low Cost High Voltage Power Supply
BBC Micro Model B and a plume of acrid smoke
High Input Voltage regulator using LM340
Infrared Proximity Detector Alarm
Arduino DAC Signal Generator project