Re: ferrite traps

[Terry Fritz <twftesla-at-uswest-dot-net>]

Hi Marc,

	Ferrites will not protect the transformer but they will cut down on TV
interference and such.  I use them on the electrodes of my big rotary gap:

http://216.160.169.3/TeslaCoils/MyCoils/BigCoil/Rgap.jpg

and on the primary wiring (on the cables) of my small coil:

http://216.160.169.3/TeslaCoils/MyCoils/SmallCoil/small_coil2.jpg

You really need something like the safety gap, MOV, low pass filter at:

http://216.160.169.3/TeslaCoils/Misc/NSTFilt.jpg
http://216.160.169.3/TeslaCoils/MyCoils/BigCoil/protection.jpg

to protect the NSTs.  I also recommend an input fuse for the NST too.

For ferrite data, see posts about the "Stealth Tesla Coil" in the archives
at www.pupman-dot-com   The base file is:

http://216.160.169.3/TeslaCoils/Misc/noise.jpg

Cheers,

	Terry




At 10:26 PM 10/2/2000 -0400, you wrote:
>terry,
>i remember briefly seeing a study of, i think yours, using ferrite traps
>on nst's? i looked again and couldn't find it, i wish i would have read
>it through? can you point me in the right direction, as i fried an nst
>last night while trying to sort out this breakout problem people are
>having with the cup cap (yes i have been listening and i'm going to try
>to sort it out now that my workspace is reorganized). i'm going to build
>your rc network, i have some large power resistors and caps but i also
>have some clamp on traps.
>also, this is really going to show my dumb, can you give a sketch or
>explanation as to how to hook the trans. across the gap? i don't think i
>have it across the cap now but ?. i've only lost two nst's in my coiling
>time but i really don't want to loose anymore and the few systems i have
>built for others will be protected as soon as i figure all this out? i'm
>thinking just lucky might be the reason i haven't lost more?
>thanks,   marc
>
>
>