Author Topic: First coil  (Read 250 times)

Offline thedoc298

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First coil
« on: July 29, 2019, 02:39:11 AM »
Got the base made today, had to stack it up to see what it will look like. Ready for the electronics, 15000, 120 ma and a syncronous rotory spark gap and of course emi and a terry. The top hat is just for looks right now.  Can't wait. I would like to really thank everone that has taken time to answer and give me tips.


 
« Last Edit: July 29, 2019, 02:46:17 AM by thedoc298 »

Offline Twospoons

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Re: First coil
« Reply #1 on: July 29, 2019, 06:05:56 AM »
Loving the bog roll probe holder!

Offline Mads Barnkob

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Re: First coil
« Reply #2 on: July 30, 2019, 07:35:22 PM »
Seems like you have all the right parts, so not much criticism to give there :)

You should properly have the topload higher up, but I assume you will once its the final assembly. For 15kV @ 120mA, you will get some serious streamers and it would just go from topload to strike rail on that short distance and with topload diameter being smaller than strike ring diameter.

Is the white MMC plate "fold-able" so it goes around the base? Seems a little big if not.

What is up with the optical illusion between base plate and primary plate? I can for the love of god not see what that is...
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Offline thedoc298

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Re: First coil
« Reply #3 on: July 31, 2019, 02:18:01 AM »
Seems like you have all the right parts, so not much criticism to give there :)

You should properly have the topload higher up, but I assume you will once its the final assembly. For 15kV @ 120mA, you will get some serious streamers and it would just go from topload to strike rail on that short distance and with topload diameter being smaller than strike ring diameter.

Is the white MMC plate "fold-able" so it goes around the base? Seems a little big if not.

What is up with the optical illusion between base plate and primary plate? I can for the love of god not see what that is...


That optical illusion is to cover the 3 paint can that are stacked there but not going to be in the final.  :) I will only be running it at 60ma (save 2 for spares) and the hat will be higher, does it matter if it is 6 or 8 inches higher or more..? Yes I am cutting the cap board into 3 pieces, one of those things you change as you go. Thank for advice.
« Last Edit: August 05, 2019, 08:41:10 AM by Mads Barnkob »

Offline johnf

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Re: First coil
« Reply #4 on: July 31, 2019, 08:52:04 AM »
Why do people repeat what others have said with no further info

gut feel is to pump up thread to top of stack for no good reason!!

Offline malte0811

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Re: First coil
« Reply #5 on: July 31, 2019, 09:03:14 AM »
I think they just messed up the formatting, the last paragraph is new and answers (some of) the questions from the actual quote.

Offline MRMILSTAR

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Re: First coil
« Reply #6 on: July 31, 2019, 04:06:05 PM »
Looks like some good parts. You will know if the toroid is too high if you get sparking or corona from the top windings of the secondary. If so then lower the toroid to better shield the top of the secondary. I was also wondering about the physical size of the MMC array.
« Last Edit: July 31, 2019, 04:07:39 PM by MRMILSTAR »

Offline thedoc298

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Re: First coil
« Reply #7 on: August 01, 2019, 04:55:12 PM »
Them are the tips that are priceless, thanks.

High Voltage Forum

Re: First coil
« Reply #7 on: August 01, 2019, 04:55:12 PM »

 


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