How do I supply power to the MIDIbox SID?
The recommended power supply for MIDIbox SID is a Commodore 64 Power Supply. Without the C64 PSU, it’s better to use separate transformers: one for the SID module (15V/100 mA should be OK), another for the digital modules (7V/500 mA should be sufficient). Though a single power supply may work, the voltage needs to be high enough to supply the regulator on your SID board. Because of the higher input voltage, the 5V (7805) regulators on your CORE module(s) will get very hot, especially if you are powering a backlit LCD. For powering 2core with 2 sid 8580 with a complete (Step C) control surface a 1A/12V power supply should be sufficient sufficient. you can buy 7805 and 7809 regulator that supports up to 1A and chain them togheter (the PSU connectet to the 7809 and the 7805 connected to the 7809 output).
