Re: Problems with my Terry RF filter

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

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

Hi Jonathan,

At 07:52 AM 4/28/2001 -0700, you wrote:
>Dang! I must have made a big mistake, because my Terry RF filter isn't
>working. I have pored over the pictures and schematic that Terry so kindly
>put up on his site, and I can't spot my mistake. The only real differneces I
>see between mine and Terry's (aside from the actual layout) is that I
>connected the MOV, caps and small resistors all together at the end of each
>string to a lug that connects to the NST input. 

That is supposed to be the "output" of the NST.  The filter goes to the
high voltage side.  Maybe a typo...

Quite possibly I have a
>"mental block" and am repeatedly missing my mistake while examining it. That
>happens to me. :-(
>
>Another thing I noticed is that in the schematic it calls for 6 caps per
>string, and in the pictures I count ten total, for 5 a string. I put in 6
>per. Is this going to make a big diff?

My filters are slightly different than the schematic.  I made them
specifically for those coils where the schematic is universal for any NST.

>
>My friend who borrowed my DMM is bringing it back this AM, so I can test all
>the components soon. Any trouble shooting advice would be much apprieciated.
> Wish I had a HV probe, I gotta get one.

Does it seem to be shorting the NST?  Maybe some ohming around will find
it.  I can't think of anything that can go wrong...  Each leg should only
see the 60Meg ohms from the resistors if your meter goes that high.
Everything else should look open except the resistors.

Cheers,

	Terry


>
>Jonathan Peakall
>
>
>