Aug 22 2007
I’m building a portable amplifier with an build in mp3 player. Today I made the amplifier pcb.
Circuit:
 |
R1, R2, R3 | 100 K |
| R4 | 4K7 | |
| R5 | 150 K | |
| R6 | 1 Ohm | |
| C1 | 1 µF | |
| C2 | 22 µF | |
| C3 | 2,2 µF | |
| C4 C5 | 100 nF | |
| C6 | 220 µF 40V | |
| C7 | 2200µF 16V | |
| US1 | TDA2030 |
Pcb layout: With components ; Without components.
Pictures::
Aug 23 2007
Today I made the power supply pcb. It has 2 outputs for the amplifiers and a variable voltage for the mp3 player. The variable voltage is made with a LM317.
All together
The Pcb layout: With components ; Without components.
Dec 16 2007
There has been a changes off plans, I no longer need a portable amplifier so this project was trown in a corner. When my pc speakers broke I decided to build this amplifier in them.
Dutch 