Re: valve Tesla coil questions

• To: tesla-at-pupman-dot-com
• Subject: Re: valve Tesla coil questions
• From: open_minded <bturner-at-apc-dot-net>
• Date: Wed, 11 Dec 1996 04:02:02 -0800

Tesla List wrote:
> 
> >From ed-at-alumni.caltech.edu Tue Dec 10 21:53:10 1996
> Date: Tue, 10 Dec 1996 17:46:47 -0800 (PST)
> From: "Edward V. Phillips" <ed-at-alumni.caltech.edu>
> To: tesla-at-pupman-dot-com
> Subject: Re:  valve Tesla coil questions
> 
> Re: CT Filament transformer
>         Don't go to the trouble of rewinding the transformer!!!
> CT isn't really necessary, but if you decide you need one put a
> couple of power resistors (say about 20 ohms) in series across
> the transformer and use the center of that pair for your center tap.
> Old scheme, used with potentiometer for "hum bucking" in audio
> amplifiers with directly heated cathodes (filaments, in other words).
> Ed Phillips


Ed -

  What about simply using two of the transformers, primaries in
series across the mains. Thus, if properly phased, you will in
essence have a 'CT' output. (Each transformer secondary at 1/2
voltage.)

- Brent

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