I have a toroid choke out of a server power supply that has 2 windings on it separated by a plastic divider. For sake of description, both winding 1 and 2 have their wires go into the center at the bottom, as it sits on it's base, on the A side of the core and after several loops, go out of the center at the top on the B side. I plan to connect the two winding to make 1 winding and add a capacitor.
Which set up will have the best filtering?
#1 Tie the top of winding 1 to the bottom of winding 2, so the current is always entering the center from one side and connect the capacitor at that tie point in the middle and ground.
#2 Same as #1, except the capacitor is at the load end of the choke.
#3 Same as #1, except the capacitor is at the feed end of the choke.
#4,5,6 Same as #1,2,3, except the choke has the two leads at the bottom tied together so the current ends up going into the center on one side and then at the middle of the single winding, it goes into the center from other side.
Hope I was clear, if not, I'll have to take pictures or make a drawing.
Thanks all,
Kinarfi
PS Capacitor is 10,000uf, 25 v electrolytic and I don't know what the value of the choke is.