I have a few 24V 20A PSU (http://www.ebay.com/itm/Zyltech-24V...958385?hash=item4afeb694b1:g:CyoAAOSwShJXLpow) and was going to build an enclosure to put one in with bunch of different pinch terminals to make it easy to use for testing things out.
I am getting started playing with stepper motors using a SmoothieBoard (which is awesome) but I need 24V for the motors, and 5V for the processor on the board. I was thinking it would be nice to have one set of pinch terminals be 24V, one at 12V, and one at 5V, and / or to have one on a variable voltage that you could dial in.
I had some SCR (http://www.ebay.com/itm/220V-2000W-...378347?hash=item2a6386646b:g:EF0AAOSwZ8ZW66QZ) that I had tried to use for a different project (but ended up burning most of them out), I thought I had read here that I could use one of those, but hooking up a voltage meter isn't showing me positive results. Maybe because it was designed for AC, maybe because it is a 2000W, not sure.
I don't really know what the needed amperage is for each - since it will really just be a hobby PSU to plug random things into, so resistors are out, plus everyone here seems to hate the idea of resistors as they generate heat.
What is the best way to proceed?
I am getting started playing with stepper motors using a SmoothieBoard (which is awesome) but I need 24V for the motors, and 5V for the processor on the board. I was thinking it would be nice to have one set of pinch terminals be 24V, one at 12V, and one at 5V, and / or to have one on a variable voltage that you could dial in.
I had some SCR (http://www.ebay.com/itm/220V-2000W-...378347?hash=item2a6386646b:g:EF0AAOSwZ8ZW66QZ) that I had tried to use for a different project (but ended up burning most of them out), I thought I had read here that I could use one of those, but hooking up a voltage meter isn't showing me positive results. Maybe because it was designed for AC, maybe because it is a 2000W, not sure.
I don't really know what the needed amperage is for each - since it will really just be a hobby PSU to plug random things into, so resistors are out, plus everyone here seems to hate the idea of resistors as they generate heat.
What is the best way to proceed?