If so, would there be any problems with mutual magnetic induction or excessive fields between these chokes since they are on the same core?

There are not to many low DCR chokes available, but what is available is fairly expensive.

Any input will be appreciated

Norris Wilson

• http://www.lundahl.se/pdfs/datash/1638.pdf

I would rather not complicate things unless there were a good reason( think Bob Carver; just as complicated as is required and not one bit more ).

I have seen good results with the big Hammond. 10 Hy at 500 mA as the first in a L-C filter. Putting a smaller choke in series will offer better high frequency filtering in general. The smaller choke will have lower shunt capacitance, or can be made so, or perhaps made with a good electrostatic shield( to capacitively bleed to ground instead of end-to-end).

I need two chokes to deliver `~350 mA of DC with up to 800vac input. That is no small choke, and I will probably get a well shielded one made to put in series. No HF getting through this one!
cheers,
Douglas

• http://www.ae-europe.nl/smoorspoelen_engels.htm