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Re: Chokes


I wrote,

>I'm having a problem with mine! 100 turns of 22 A.W.G. on the 2501
>core from Hosfelt. I increased my spark gap spacing from 0.016 to
>0.030 per gap (10 electrodes, 9 gaps). The first thing that happened
>was the wire on the toroid connected to the high side of my primary,
>shunt spark gap, blasted a hole through the 1/8" plexiglass between
>the toroid and the pressboard base. So I put in some 3/8" plexy under
>it. The spark jumped arround. I put it in transformer oil, in a
>polyethylene container, on the 3/8" plexy on the 1/8" plexy. ZAP thru
>all to the base! I raised the toroid up off the tupperware with a 1/8"
>plexy disc. It finally ran for a few minutes before arcing through. I
>raised it all on 1"x2" wood blocks. It still arced through!
>
[snip]
>Has anybody else had this problem?
>
>	supprised jim
>
>
	1.	I was getting discharges from my main terminal to my
primary, to my primary-adjustment-clip wire, to my RFI bypass cap and
to the air blast from my spark gap! Oh and an occasional corona over
to my main cap!

	2.	Tonight I added in 2 9K 100W adjustable resistors in
series with the RFI chokes, that stopped the chokes from arcing!

I then had to lower everything. It was getting with arcs from my
discharge terminal.

When I moved the tap on the resistors to about 1/4 (2.25Kohms) and
turned on the coil I had an air discharge stop about 1' in front of my
face! I was sitting 5' from the edge of the toroid /\/\/\/\/ zap! That
portion of the resistor is getting to about 100C, so it's

I'm going to have to build a table with a shelf for the components sit
on below the primary to protect them.

I'm going to have to build a garage with a larger floor to protect
me:)

		jim