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Building a New Magnifier
Hello all,
Thanks to Richard H. and all of you for your comments on the potential
x-former supply.
I want to build a new Magnifier and I would like your comments on my
tentative design.
The supply will be a 3KVA 14.4 KV ballasted potential transformer with
by-pass caps and safety gap. The RF transformer will be 24" in dia. with a
winding length of 30". I will use 14 gauge stranded power type wire with
THHN insulation. I plan on having each turn separated by 100 lb. test
fishing line to keep even spacing and increase standoff. The primary will
be 3-4 turns of 1/2" copper tubing spaced as close to the secondary as I
can get it;appx. 2". The secondary will be able to raise and lower to
adjust the coupling. The tank cap is 0.08mf -at- 75 KV (pulsed type) and
driven by a 560 bpps (max) rotory gap.
The resonator will be a 10" dia. 36" acrylic tube with a winding length
of 30" of 20 gauge magnet wire. The toroid will be 36" x 10" dryer duct type.
Now I have a few questions that I would appreciate guidance in: Should
I pot the RF transformer in polyurethane? Is the fishing line a good idea?
For the resonator is 20 gauge too big or should I use something smaller a
decrease the ratio to 2:1, or just keep it at 3:1? Should I put my cap and
rotory gap away from under the RF transformer? Is acrylic a reasonable
choice for both of the forms? Is wood good enough for the support structures?
I know these are allot of questions and I apologize. I think I have a
good idea of what I want but these fine details have been plaguing me in my
past designs and I would like to build this one like a pro.
Thanks again for any help.
Dwight