High Voltage Forum
General electronics => Beginners => Topic started by: DaiKen on February 10, 2018, 08:20:05 PM
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Hi all,
In http://kaizerpowerelectronics.dk/tesla-coils/kaizer-drsstc-i/ Mads writes: 'I do not recommend anyone to make the same primary coil supports' and I have some trouble finding a working alternative.
Suggestions, advice & tips are very welcome.
Kind regards,
Ton
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What I meant was the through-hole solution, because it is very hard work to get it screwed into position.
You can do almost exactly the same, but then saw down through the holes, just a little off centre so you get a little snap-in to hold the tubing in place, or you can also drill small holes behind the slots to fix the coil into position with a small piece of wire or so. Take a look at my DRSSTC4 f.ex.
But I do recommend make flat spiral primary coils for DRSSTCs, they provide plenty of coupling and gets further away from the topload.
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Hi Mads,
Thanks for your reply. That's just what I read, and looking at the pictures I can imaging the difficulties.
Making a flat spiral coil for a coil based on your DRSSTC1, can I use the same amount of windings?
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You don't even need so many turns, as it will be tapped at a much lower number of turns, in the range of 5-6 turns in order to de-tune the primary below secondary resonant frequency.
On http://kaizerpowerelectronics.dk/calculators/spiral-coil-calculator/ I plotted these numbers and that seems to be a good enough solution for DRSSTC1, you can change the distance between turns if its getting too big, but too small also makes it harder to tune with a large tap connection.
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Thanks Mad!
Like it very much you took the effort to make this calculation!