Hope someone can possibly help me with the following. Forgive me for possible use of wrong words here but I am a bit of a newbie to all this CNC stuff.
I have converted a PC Power supply, forgetting all the other voltages out other than 5V, -12V and 12V, I need 24V for the stepper controller. I have used an LM338K regulator circuit and managed to get 22V out. This consists of -12V & +12V in out gives me the 22V.
The question, my stepper controller board requires 5V - Grd - 24V in, the 5V will come from the 5V out from the main power supply, the 24V from the LM338 board. Now the confusing bit, do I take a NEG from the main power supply and the NEG from the LM338 board, connect together and use as the Grd on the stepper board.
Years since I have messed with this stuff and dont just want to assume as I dont want to blow the stepper board up.
Thanks in advance guys for any advice.
Steve