Re: NST protection

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Dan,

"I" think it is worth it :o))

It takes RF stress off the NST and keep the winding from going over 
voltage.  That probably stops about 90+% of the things that kill NSTs.  I 
would also put an input line fuse on the NST too.  Failures of NSTs with 
the filter are fairly rare and nothing compared to the days when people did 
not use filters and NSTs fried like flies...

If one were really careful, you could probably do without it, but...

It can do any normal NST system to 200+mA and below.  The number of MOVs 
should be determined by the highest voltage NST you are planning on running.

MOT powered coils do well too.  You just have to be super careful of the 
terrible dangerous voltage from MOTs.

Cheers,

         Terry

At 09:05 AM 5/29/2004, you wrote:
>Hi list, I've got a few questions before I begin to gather the parts for 
>Terry's nst filter. Fist off, is it worth it? Does it give absolute 
>protection, or does it just prolong nst failure? Would I be able to add 
>more on to it if I get a bigger nst (I have a 9/30) or could I build it 
>for a 12kv or 15kv and still run a 9kv on it? And finally, should I just 
>forget about the nst and go for the MOV powered coil? Hopefully I'll learn 
>something from others mistakes before making my own mistakes. I look 
>forward to a response.
>        Thank you,
>              Dan E.