Amplifier description:
This circuit TDA820M Mini Amplifier 2W+2W. Supply Volt 12V, Easy to build and Low cost. If you want mini amplifier circuit , as a result do not be defeated certainly. The sound will a little 2W+2W just but enough with 6 sizes are inch 8ohm loudspeakers. as a result still have a voice good loud the moderately. Request friends have fun the circuit amplifies this miniature please yes.
Circuit diagram:
PCB layout:
In Mono style a few parts and very cheap!
TBA820 mini AUDIO AMPLIFIER 1.2W
Here is Circuit Mini power amplifier low watt (1.2W Only). IN circuit have IC TBA820,it old IC Audio amp.
If phone your light exceedingly ring. Invite come to this way. I thinks this circuit can help. It is Telephone Amplifier circuit. By have pillar equipment be IC LF351 perform enlarge telephone signal from pick up give the power goes up. Before transmit to IC TBA820M for amplify with a loudspeaker next sir. And VR1 perform fine the loud sound or the silent is extremely fond of something. See circuit detail enhances in a picture.
