Quote Originally Posted by m_c View Post
I've also got a collection of bits for the control/drive.
So far I have a 6.5Nm stepper from ArcEuroTrade, a 625VA 55V toroidal, big capacitor, bridge rectifier, a SmoothStepper coupled to a CNC4PC C23 BOB,and as of today a Gecko 203V (and a couple G251 for future use).
MC,
Careful with that power supply, 55 volts AC when rectified and smoothed will be 77 volts, very close to the 80 volt limit of the Gecko's and not a lot to play with when the stepper is winding down.

I made the mistake of ordering a 55v one from RS and saw 82 to 85 volts at times. Swapped it out for a 50 volt one and had no problems. The 55 volt one is still in a drawer and I may use this on one of my personal machines with one of Arc's large drivers that can handle 90 volts.

John S.