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Frequency central
System x dual adsr
Because two is better than one! Now even easier to build!
Main PCB
Top of PCB
Bottom of PCB
Key to PCB screen print:
n: This signifies NPN BC547 transistors. Note the correct pinout as shown by the half circles.
p: This signifies PNP BC557 transistors. Note the correct pinout as shown by the half circles.
LED: The shorter leg goes through the square pad.
Please observe the correct polarity for all ICs, diodes and electrolytic capacitors.
Build documentation for:
Control PCB
Top of PCB
Bottom of PCB
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Table of Contents
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Summary of Contents for Frequency Central SYSTEM X DUAL ADSR
- Page 1 Frequency central Build documentation for: System x dual adsr Because two is better than one! Now even easier to build! Main PCB Control PCB Top of PCB Top of PCB Bottom of PCB Bottom of PCB Key to PCB screen print: n: This signifies NPN BC547 transistors.
- Page 2 Bill of Materials You will notice that all of the components listed below are also hyperlinks to where we buy each specific part from. You can also use the hyperlinks to find out more about what each component looks like. If you want to know even more, Google is your friend.
- Page 3 Main PCB assembly 1. Solder the diodes and all resistors. Watch the polarity of the diodes. 2. Solder the IC socket and insert the IC. 3. Solder the BC547 and BC557 – watch the polarity! 4. Solder the box power header. Make sure the notch lines up with the screenprint legend.
- Page 4 Control PCB assembly 1. Solder the diodes and all resistors. Watch the polarity of the diodes. 2. Solder the IC sockets and insert the ICs. 3. Solder the 4 electrolytic capacitors – you’ll need to bend the legs over, as these components need to be laid down on their sides (see photos).
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