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Power Supply:
Power supply is the first part to be built. Prepare all parts before starting will avoid that you were wrong. Buy transformer before beginning assembly because you need it to test the power supply.
Here is the part list:
Image | Description | Part | Value | Qty |
 | Transformer 15VAC 1000mA (not included) | 1 | ||
 | 2,1mm power jack | 15VAC | Power Jack | 1 |
 | Multilayer ceramic capacitor (104) | C2, C6, C9, C10 | 100n | 4 |
| Electrolytic capacitor | C3 | 680/35 | 1 | |
 | Electrolytic capacitor | C5, C7 | 2200/35 | 2 |
 | Electrolytic capacitor | C11 | 220/35 | 1 |
 | Electrolytic capacitor | C12, C13 | 100/35 | 2 |
| Rectifier diode | D1, D2, D3, D4, D5, D6, D10 | 1N4004 | 7 | |
 | Schottky diode | D7 | 1N5822 | 1 |
 | Positive voltage regulator | IC1 | 7815 | 1 |
 | Step-Down Voltage Regulator | IC2 | LM2596 | 1 |
 | Negative voltage regulator | IC5 | 7915 | 1 |
 | Headsink | 2 | ||
 | Inductor | L1 | 33uH | 1 |
And here is the list of Main_Board components :
| Image | Description | Part | Value | Qty |
 | Electrolytic capacitor | C16, C18, C20 | 100/10 | 3 |
 | Electrolytic capacitor | C24*, C25*, C26*, C27*, C37, C44, C46, C62, C64, C79, C80, C84*, C85*, C86*, C87*, C88*, C89*, C93, C94, C106, C107, C123, C124, C147, C148 | 47/16 | 25 |
 | 1/4w Carbon resistor | R78*, R79*, R80*, R81*, R151, R164*, R165*, R167*, R168*, R170*, R171*, R178, R179, R208, R209, R236, R237, R264, R265, R292, R293, R328, R329, R379, R380 | 100R | 25 |
Make it:
 | We're off on this adventure.Place all the power diodes. They are in red circled in the picture. Click on the picture to enlarge if necessary. Diodes are directional, make sure the white stripe at the end of each diode matches the silkscreen.
|
 | Then comes the turn of multilayer capacitors of 0.1uF |
 | Bend the capacitors 2200uF leads, this so it does not touch the Main_Board when you assembly all in the box. |
 | Now solder electrolytic capacitors and inductor L1. Make sure they are placed correctly, with the negative stripes as shown on silkscreen |
 | Bend LM2596 leads like this |
 | And bend regulators leads like this |
 | Now solder the power connector and the three regulators. Do not forget to put the radiators on both 7815 and 7915 regulators.
BEWARE OF PLACE EACH REGULATOR ON HIS RIGHT PLACE |
| Connect power supply to the IO_board and test voltage on pads +5 v, +15 v,-15v. The value may vary by plus or minus 5%. Example, if you measure 14.6V on the +15 v pad is OK. |
 | Cut four wire long enough to turn the Main_Board during assembly and solder to the pads. |
 | Now to the Main_Board. Start by soldering all the resistors 100ohms framed in red in the picture. |
 | Solder the vertical resistors like this. Always put the body of the resistor on the side where there is the circle on the silkscreen. |
 | Solder the electrolytic capacitors. PAY ATTENTION TO THE POLARITY! PICTURE IS WRONG FOLLOW THE SILKSCREEN |
 | The red boxes show you where the capacitors are placed |
 | Connect the two boards with four wire. CONNECT WELL IN +15 V TO +15 V,-15V TO THE-15V, GND TO GND AND THE +5 V TO +5 V. |
 | It can happen that by turning over and over the Main_Board one wire breaks. SURE EVERY FUTURE POWER SUPPLY TESTED THAT THE FOUR WIRES ARE ALWAYS CONNECTED. And we're done with the power you can move on to built the Noise part. |
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