The SVF issue 5 PCB
This is the prototype issue 5 module with natural finish Schaeffer panel. Note the use of the Sock8 board
to mount the jack sockets. Two pot brackets are used to hold the PCB firmly to the front panel.
I have provided space for the three main control pots on the PCB. If you use the specified
16mm Alpha pots and matching brackets, the PCB can be held firmly to the panel without any
additional mounting procedures. The pot spacing is 1.625” and is the same as the vertical
spacing on the MOTM modular synthesiser and most of our other modules.
The design requires plus and minus 15V supplies. The power supply should be adequately
regulated. The current consumption is about 30mA for each rail. Power is routed onto the
PCB by a four way 0.156” MTA156 type connector or the special five way Synthesizers.com
MTA100 header. You could, of course, wire up the board by soldering on wires directly. The
four pins are +15V, ground, earth/panel ground, -15V. The earth/panel connection allows you
to connect the metal front panel to the power supply’s ground without it sharing the modules’
ground line. More about this later.
The PCB has four mounting holes for M3 bolts, one near each corner. These are not required
if you are using the two 16mm pot brackets.
The issue 5 board size is 104mm (high) x 104mm (deep), while the issue 5.1 board size is
104mm (high) x 99mm (deep). Electrically both issue 5 and issue 5.1 are the same.
The board has been laid out to accept connection to our Sock8 socket board. This small board
speeds up the wiring of the eight sockets and reduces the chances of mistakes.
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