help please with toroidal transformers selection

[Tom J]

In practice, then, just what size capacitor will do an adequate job without going OTT? What is the effect of a too-small capacitor? Don't know the answer myself, but once my machine is back running I'll stick an oscilloscope on the PSU output and see what's happening, just in the interests of science.

1000uF for 1A, voltage is important (20% more than operating voltage and you are safe, min 100V caps for 80V system.)

Small capacitor won't take enough power from stepper when slow down or change direction (EMF). I am scared to write anything now