DIY Miniature Amplifier 

This video shows a simple USB bus-powered AF power amplifier circuit.
This amplifier builds around the TDA7052A power amplifier IC. The whole circuit has only two external components.
The dimensions of the final build are around 17.6mm x 18.8mm x 12.5mm, and it can be connected directly to the speaker terminals.
The schematic and additional details are available at jayakody2000lk.blogspot.com/20....
Content of the video:
00:00 - SMT adapter PCB and TDA7052A IC
00:03 - Soldering TDA7052A into SMT adapter PCB
00:43 - Connecting Pin 3 and Pin 6
01:25 - Connecting 220μF capacitor
02:03 - Connecting 0.22μF capacitor
03:10 - Attaching output terminals
03:39 - Attaching USB cable
04:48 - Attaching audio input cable
06:36 - Enclosing with heat shrink tube
07:03 - Connecting to the speaker
07:56 - Testing

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