Quote Originally Posted by Jonathan View Post
The problem is unless it's less than a couple of amps it's hard to regulate the voltage, since linear regulators are extremely inefficient so you can only use them for quite small currents, SMPS's are quite difficult to design and adding more transformers is rather illogical, so I'll be interested to see how you plan to change the voltage. Also if the other appliances only use a small amount of current (making it reasonable to use linear regulators), then the transformers are probably several times bigger than they need to be.
So you really think that they will be too much for 5 steppers and a few low amp (Less than 5A) power supplies providing 12V 18V 24V and maybe even 36v. I will be using circuits based on LM317's (or equiv) driving 2n3055s...

Rick