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*To*: tesla@xxxxxxxxxx*Subject*: Re: 60Hz*From*: "Tesla list" <tesla@xxxxxxxxxx>*Date*: Tue, 05 Apr 2005 21:46:20 -0600*Delivered-to*: testla@pupman.com*Delivered-to*: tesla@pupman.com*Old-return-path*: <teslalist@twfpowerelectronics.com>*Resent-date*: Tue, 5 Apr 2005 21:47:28 -0600 (MDT)*Resent-from*: tesla@xxxxxxxxxx*Resent-message-id*: <kUwK4.A.o6B.Nv1UCB@poodle>*Resent-sender*: tesla-request@xxxxxxxxxx

Original poster: Ed Phillips <evp@xxxxxxxxxxx>

" > Original poster: BunnyKiller <bunikllr@xxxxxxx> > > its possible.... but do you have enuf money to build it??? ;) we are > talking several miles of wire, a huge toroid, and a massive primary... let > alone the transformer to power it... ideas are kewl > but the math will humiliate one in a hurry... financially and > realistically... if it was that easy we would all be doing it ... I > know I would be...

Actually, this is a great exercise in Tesla Coil design math... We've covered it a bit before.. But, Steven, get one of the tools and start running some numbers.. start with a 200 ft high by 50 ft diameter secondary. Figure out a toroid that will fit. Rummage through that McMaster-Carr catalog for parts.. How many miles of wire? How much will it weigh? How will you support it? What will the wire cost?"

Here's a design made with a simple QuickBasic program I use; didn't tweak for exactly 60 Hz:

Coil diameter 50 feet Coil length 200 feet Toroid OD 100 feet Ring OD 25 feet Wire length 4,461,972 feet Wire weight 89463 pounds DC resistance 8080 ohms Inductance 2720 henries Coil capacitance 1013 uufd Toroid capacitance 1295 uufd Total capacitance 2908 uufd Resonant frequency 65 Hz Q w/o streamers 108

I think I got all the decimal places right. Get started building!

Ed

Ed