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Registered Member #1902
Joined: Fri Jan 02 2009, 07:59PM
Location: Lancaster, NY
Posts: 75
Hello all! This will be my first largish Tesla coil so I'm quite excited! Here's the specs:
Primary Coil: 13.8" Diameter, .25" copper tubing, .75" spacing, 5.5 turns Secondary Coil: 7.8" Diameter, 27.5" length, Fo loaded approx ~70khz Top-load: Probably going with 6" ducting with 24" outer diameter, wood filler and Alu tape method Primary Capacitor: CDE caps, 8 strings in parallel two per string(16) for 4kv at .6uf Switching IGBT: CM300 halfbridge, With 130VAC doubled on the bus prob around 480VDC Over current set around 600-700Apk Driver board is by Chris King, May be using "Predikter" like setup for ZC prediction.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
I say good luck, but hey, I got that same exact variac for powering my monster =D Nice. I see you grounded it...Something I have not done my self really. Enjoy your project, sounds fun
Registered Member #1902
Joined: Fri Jan 02 2009, 07:59PM
Location: Lancaster, NY
Posts: 75
Mads Barnkob wrote ...
Corey wrote ...
Slighty overcoupled... I might even be saying that it is insanely overcoupled :)
The base is not yet finished i will be adding a HDPE table tapped in the center with a nylon rod that can be used to adjust coupling, it will be higher perhaps where the last secondary turn meets the top primary turn. As for the variac i believe its a bit overkill, i'd love to know how to pull 20+ Amps from single phase 120VAC outlet...
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
If that's one of those sketchy Chinese variacs it won't be overkill; a 30A Chinese variac will not happily do 30A. If it is a nice American brand, ignore what I just said.
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First DRSSTC!
