The power supply of this analog computer is +/- 15 V. A simple DC/DC-Converter transforms an input voltage of 5 V to the needed +/- 15 V. I chose an aimtec AM3N-0515D-RZ mainly because of it's availability. Input voltage range is 4.5 V to 5.5 V. Maximum output current is 100 mA.
The analog computer project files are hosted at GitHub:
https://github.com/grappendorf/analogcomputer
Subdirectory: Power