This is the circuit diagram of
USB powered computer speaker, or it widely known as multimedia speakers
for PCs. The circuit has single-chipbased design, low-voltage
electrical power supply, compatibility with USB power from computer, simple heat-sinking, inexpensive, large flexibility and wide temperature tolerance.
At the heart of the circuit is IC TDA2822M. This IC is, actually, monolithic type in 8-lead mini DIP (Dual Inline Package)....
