Moog modules use a 22 pin edge connector for power and inter-cabinet signal routing. The main +12, Ground, and -6V are on pins 1, 2, and 3 and some modules such as the 901B use -10V on pin 14. Oscillator modules such as the 901A and 901B and also the filter modules 904A, 904B, and 904C have inter-module connections through these edge connectors. Pre-patched routings of CV, trigger, and other signals are also routed through the edge connectors.
This customer wanted to use a 901A and two 901B modules in a Synthesizers.com cabinet so I made him a power adapter board to generate the +12V, -6V, and -10V from the +/-15V supplies. I chose to use adjustable regulators instead of fixed regulators to be able to adjust the voltage more accurately for tuning. The standard Synthesizers.com power connector is on the left and I used 5 pin 0.100"MTA connectors right to connect to new Moog cables. The 901A Controller with two 901B Oscillators and the power adapter board draws 95mA of +15V and 70 mA of -15V.
I made new Moog cables with the appropriate power and inter-module wiring for the 901A and 901B modules. Although the edge connectors are on standard 0.156" centers more standard edge connectors do not fit properly since there is no PCB material beyond the two outside fingers. The Duo-Tyne connectors fit this more narrow width.
Mouser stocks the 22 pin Duo-Tyne Flag edge connector housing 571-582388-9. They also stock two different Duo-Tyne contacts 571-5-530501-5 and 571-5-530505-5. I chose the latter contacts for these cables. I used a more modern wire color coding (red=positive, black=ground, white=negative) than the Moog standard (red=+12, green=ground, black=-6V, white=-10V).
This image shows two of the edge connectors. The top connector is the 901A which only uses two supplies and the bottom connector is for one of the 901B which which use three supplies. You can see the inter-module connections on pins 5, 6, and 7. I did not wire any of the signal connections.
This image shows the crimped flag connector. I do solder them after crimping.
Here is the customer's installation of three 901 modules with in a Synthesizer.com cabinet.
You can spot this cabinet and three Moog modules in the customer's studio photos.
Wall of synths museum
The rear photo shows my power adapter board and custom cables.