RE: Single 833A VTTC

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxx>

> I actually have a small plate transformer for coupling the audio input and
> enough diodes to make a bridge now. I am waiting on a filter cap I
> purchased
> on eBay. Once I have it, I believe I will have all the parts needed to
> make
> and audio modulated VTTC. It's the next project on my list. The schematic
> I'm going to use is by David Trimmell here:
>
> http://66.78.90.30/webdoc2.htg/Tube_coil/Audio_mod_sch_sm.jpg
>
> I'll let you know how it goes.
>
> Thanks,
> Cameron
>
> Hi Cameron,
>
>      Looking at the schematic, I am curious about the designations of
> "positive" and "negative" on the audio input. Any guesses what is
> meant by this?
>
> Matt D.

Hi Matt,

The input is speaker level at 40 or 50 watts. My guess is the audio input is
designated positive/negative in order to maintain phasing.

Thanks,
Cameron