Re: Why do TC's use line filters wired in reverse

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

Original poster: "Bill Vanyo by way of Terry Fritz <twftesla-at-uswest-dot-net>" <vanyo-at-echoes-dot-net>

I posted this question a while back, but got no response.  The topic
seems to be in vogue, so I'll try again.  Ive got four Sprague line
filters rated 27 amp that I'd like to use for my upcoming (and first)
coil.  The schematic (actually the scanned label on the filter) is here:

http://www.geocities-dot-com/billvanyo/emifilter.jpg

These are asymmetric, no?  Are they suitable for Tesla coil use?  I have
no idea about the best way to hook these up.  I can use all four, and
was thinking of two parallel strings of two.  Now something I read
somewhere gives me the idea that the two in series could be in opposite
directions, but I don't know if the it's  the line or load ends that
should be connected together, and whether the grounds should go to the
house or RF ground.

BTW, I'll be using one or two 15/60 NST's.

	Thanks,
	Bill

Tesla list wrote:
> 
> Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>
> 
> Hi All
> 
> I deal with a lot of line filters at work.  All the ones I have ever seen
> are exactly the same electrically going from "in to out" as opposed to "out
> to in".  The terminals may be different on each end, but they are
> electrically the same either way...
> 
> I also checked a bunch of standard line filters I use here and they are
> symetrical too.  The only TC filter I know of the is "out to in" critical
> is my NST ouput filter (see how I am :-)) at:
> 
> http://hot-streamer-dot-com/TeslaCoils/Misc/NSTFilt.jpg
> 
> Cheers,
> 
>         Terry (the Fritz one :-))