Quote Originally Posted by john swift View Post
Hi Neale

The other variable is when an axis decelerates and the motors becomes generators returning energy back to the power supply capacitors

the voltage at power supply terminals could be increased beyond the drivers limit

John
Plenty to think about here for the electronically semi-literate like myself. I think keeping the voltage around 70v seems sensible. Is there any disadvantage to using a transformer with a pair of 45v secondaries in parallel? Conversely, any advantage to using a 24v in series?

Rapid Electronics seems like a good place to buy. Is there anything I need to look out for when buying capacitors? I believe there are differences in quality from one manufacturer to another - I don't want to spoil the ship for a ha'porth of tar.