[sdiy] OT: 48v psu for dc motor

[Julian]

Im building a CNC machine here (for synth use, amoungs other things : ) and the spindle will be driven by a small DC motor.

I have the motor, and the spec sheet for it, but no power supply.

The spec sheet lists the following -

Stall Current (amps) : 3.1
Peak Current (amps) : 24.5
Max Voltage (VDC) : 48

In order to control the speed of the motor,  i was going to go for one of these kits to vary the ammount of time the supply is 
connected to the motor -

http://www.quasarelectronics.com/3067.htm

But, yes, my knowlege of higher ampage / voltage power supplies is next to nothing.

For example, i could probably pick up a switchmode psu off ebay for very little, but would the PWM of the speed controller interfear 
with the switchmodes regulating capability?

And if i want to build a torroidal/rectifier/capacitor combination, im unsure of the exact details values anyhow!

So, yep, im stuck.  And whenever i try and google myself an answer, i get stuck reading about low ampage 48v phantom power units.

I know its not really synth talk, but i figured the chances of someone here not knowing the answer would be pretty slim : )

Cheers,
Julian




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