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Re: Newbie with a few questions...
Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>
Sounds like the tuning is way way off.
We need to determine the frequencies of the primary and secondary to fix it.
How many turns of wire are one the secondary?
How long is the secondary coil?
What wire gauge is used on the secondary?
What is the size of the top terminal?
What is the primary capacitor value?
What is the diameter of the center hole in the primary?
What is the outside diameter of the primary?
How many turns are on the primary?
What type of spark gap are you using?
Sorry for all the questions but they are needed to determine the frequencies.
At 05:04 AM 4/10/2001 +0000, you wrote:
>>Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>
>>You should try aluminum foil and making a ground plane under the coil.
>>Sort of like the one under the secondary system being tested here:
>>Most of the RF currents will be limited to the immediate area and such a
>>simple ground plane will provide the RF ground well. I would also >ground
>>this to the electrical ground for safety.
>Thank you sir! Much better, mucho multiple 5-6" sparks (need to increase
>topload). New problem though, the secondary is coated with 4 coats of PU,
>but I'm getting tons of little sparks comming out of the top and bottom
>turns. :( I'm thinking I did something stupid, I wrapped black PVC
>elec. tape around the secondary above and under the windings (just liked
>the way it looked), now, am I getting these sparks from the 'sharp'
>edge of the tape??? Would a few more coats of PU help smooth it out?
>>A coil with that input power may put out 25 inch arcs if everything were
>>just right. I wonder if the primary to secondary tuning is off a bit...
>Well, I'll be very happy if I can get 10-12"
>>Sliding tubing over a long length of copper is very difficult.
>Well, you were right about that. :)
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