IC LA 4440
This is a 19 watt simple
amplifier circuit diagram using IC LA4440 from Sanyo.
It uses very less components other than the IC LA4440.A very high quality circuit with respect to its cost and ideal for beginners.
Amplifier LA 4440 Circuit
Here IC LA 4440 is wired as a bridge amplifier to deliver a 19 W Rms on a 4 Ohm speaker. The IC has built in thermal, over voltage and short circuit protection.The IC also incorporates a audio muting function,but that is not used here.