The LM380 2 watt audio amplifier circuit shown here is an easy to build circuit using only few external parts and able deliver 2W to 2.5 Watt output only on 10V DC.  The circuit is using LM380N version which is a 14 pin dip package IC with good features like it can be operated on a wide range

of voltage from 10V to 22V, drains low quiescent power, low distortion etc. This IC can be used with many DIY audio circuits in lab like door bell circuit, intercom circuit, buzzer circuit etc. Due to its input sensitivity and low distortion the IC will also perform good when used as final amplifier in any AM or FM receiver circuit

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LM380 2 Watt Audio Amplifier Circuit