RE: [TCML] Terry filters

["Lau, Gary" <Gary.Lau@xxxxxx>]

I would say that such a configuration is of value, in that only half of a conventional Terry filter is needed.  Also, there is no possibility of arcing between the innermost primary turn and secondary base, so it can be brought closer.  My mini coil, powered by a single ended 4/20 NST uses this configuration.  But there is no functional or performance benefit.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Jim Mora
> Sent: Monday, December 31, 2007 3:31 PM
> To: 'Tesla Coil Mailing List'
> Subject: RE: [TCML] Terry filters
>
> Hello,
>
> It was recently pointed out that *RF* grounding the innermost turn to the
> core and connecting to the bottom of the secondary and maybe the inner most
> primary turn ala Odin coil may be of value.
>
> What about a half Terry Filter or Dr. Resonance's air core coil?
>
> Jim Mora
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf
> Of bartb
> Sent: Monday, December 31, 2007 11:15 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Terry filters
>
> Hi Rich,
>
> Sure, it wouldn't hurt to filter. But you will need to reconfigure the
> circuit for the power supply. The TF circuit itself is for center
> grounded transformers up to ~250mA.
>
> Take care,
> Bart
>
> Rich Schmuke wrote:
> > I have a 13Kv 120ma trnsformer from a laser power supply. I am
> > building a coil with it , it has no center tap, but I think I could
> > add one. Would a terry filter be of use with this type of transformer?
> > Control is by a 240v autotransformer and variable inductive load. The
> > load is a old Jefferson NST core, 10ga primary , with a few turns of
> > wire shorted out for a secondary, then a roll of 12ga with moveable
> > core of steel wire.
> >
> > Rich
>
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