Re: What varistors to use for filter

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi,

I use 1800 Volt MOVs from DigiKey.

http://hot-streamer-dot-com/TeslaCoils/Misc/NSTFilt.jpg

Your 1000 VAC MOVs are probably the same thing.  Use seven per side for a
total of 14.

Cheers,

	Terry


At 01:43 PM 3/11/2002 -0600, you wrote:
>
>I have a question!
>
>What varistors are people using on there NST protection filters and how
>many?
>
> I was looking at the 1000 VAC ones, S14K1000, the breakover voltage is
>suppose to be 1800 Volts, they seem to be the highes voltage ones
>available.  I want to connect them to a 12Kv 60ma transformer running LTR
>capacitor of  0.02uF.  My filter is already built but since I have to order
>resistors from this company that has minimum orders, I figured some of
>these should put me over the $40.00 minimum.
>
>How many should I use since my system has some resonant voltage rise ?
>