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Re: bipolar coil design

Original poster: "Paul B. Brodie" <pbbrodie@xxxxxxxxxxxxx>

Now that is one humongus toroid!!! In the picture with two toroids stacked, is that a sharp object sticking out on the right side of the top toroid where the spark starts? Just how big is that top toroid? These are some really super pictures. You must be really proud of this coil.
Paul Brodie
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, March 22, 2005 7:43 PM
Subject: Re: bipolar coil design

> Original poster: "Peter Terren" <pterren@xxxxxxxxxxxx>
> You can avoid primary strikes by use of a second smaller toroid below the
> main one. They have a marked "shaping" effect on the direction of streamers.
> With single toroid: http://tesladownunder.iinet.net.au/T6_5ft.JPG
> With second toroid: http://tesladownunder.iinet.net.au/Tesla_7ft.JPG
> Peter (Tesla Downunder)
> http://tesladownunder.iinet.net.au
>>Original poster: "Lau, Gary" <gary.lau@xxxxxx>
>>Never having built a bipolar coil I can't comment based on experience,
>>but powering it by two 15/60's sounds like major overkill. I should
>>think the primary would be an unavoidable target with such power.