Re: Torid connection?

[Esondrmn-at-xxxxxxx (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

In a message dated 10/31/00 10:48:35 AM Pacific Standard Time, 
tesla-at-pupman-dot-com writes: 


>
> I just finished my first ever torid made of 4" aluminum dryer duct. I had 
> planned to solder the seam and the connection from the secondary- before I 
> found that soldering aluminum is apparently impossible. I used epoxy on the 
> seam, and now Im wondering what's the best method to attach the secondary 
> wire to the torid? 
> ________________________



I use pvc pipe couplings.  I have a pvc end cap glued upside down on top of 
the secondary.  Then I have a short piece of pvc pipe inserted in the end 
cap.  Now I slide another end cap on top of the short piece of pipe.  This 
end cap has a 1/4" hole drilled in it and a nylon bolt epoxied in the hole so 
it sticks up about 1.0".  The wire from the secondary is just scraped bare of 
insulation and loosely wrapped around the bolt.  All my toroids have a hole 
drilled in the center so you mount them by just setting them over the nylon 
bolt then use a nylon washer and wing nut to attach them.  This makes 
changing toroids quick and easy, completes the electrical connection to the 
toroid easily and makes the height of the toroid above the secondary easy to 
change by having several lengths of pvc pipe to use. 

Ed Sonderman