Originally Posted by journeyonline  I have a good sized transformer that is about 60 volts. I was told my caps are to small and I need a larger ones. I will be powering stepper motors and would like to use one cap if possible. What do I need to know to find out the correct model I need or do I just buy based on the size of the vdc? |
What were you told was too small about the caps and what size are they? If you have a 60Vrms transformer, I doubt you want to use it to make a supply for most steppers.
There are some rules of thumb, but they all use real numbers....none of which you supplied. Basically, you choose the cap based on the max current you will draw and how much ripple you will tolerate. Of course, the cap has to be rated for the voltage you put to it, or you are gonna remember next time.