Why does it have to be a toroid? They have wider bandwith, when with a filter you want the smallest bandwidth possible. Split bobbin EI or EI with interwinding shield makes more sense.
Toroidal Isolation Power Conditioner
I'm on the hunt for a Toroidal Isolation Power Conditioner. So far I know of Torus, Bryston, (pretty much the same thing), Richard Gray I think is similar in a way. But there has to be other names that make and/or distribute these products. Since I'm looking in the used market I list of top tier Toroidal Isolation Power Conditioners would be of great value to me, and hopefully expand my search results.
Thanks,
Shawn
Thanks,
Shawn
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- 20 posts total
By their nature, toroidal transformers have a much wider bandwidth than EI transformers, meaning they pass more high frequencies than an EI would, while both will pass the fundamental AC frequency well (60 or 50Hz). The goal of an isolation transformer used as a filter is to block as much of the HF hash as possible, preventing it from getting into the connected equipment, so it stands to reason that a more lossy transformer would do a better job of that. Not saying a toroid with an interwinding screen won't do a good job, but I don't see any reason to fixate on a toroid; an EI can do as well or better for filtering. |
Here's one man's thoughts on the subject of EI vs Toroid: http://www.soundstage.com/maxdb/maxdb071998.htm |
- 20 posts total