Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com> <http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&category=361&item=2242711783&rd=1>http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&category=361&item=2242711783&rd=1 That auction mentions 30000 turns...I'm guessing he is using the idea that more turns = better? I'd think it would facilitate the use of a very small toroid. ---Eric