More tubes
Rene Schmitz
uzs159 at uni-bonn.de
Fri Nov 26 19:20:10 CET 1999
At 17:27 26.11.99 +0100, Haible Juergen wrote:
> >As far as I understood Erics' schematic, he used two 110V to 6.3V
> >transformers back to back. This is nice, because you can use
>standard
> >transformers, and get power for the filaments.
>
>Ahh, I see. This makes sense, of course.
Erm, what I was talking about is the PSU of that neonlamp-keyboard on the
"Phattytron" page at Synthfool, it shows two transformers. What you meant
was the TS10-PSU, which seems to be indeed a transformer with a second 110V
winding.
What about using one of those "insulation" transformers (the 220V->110V
kind) for such a PSU? These should be suitable. I discovered some 150W
types recently in the Reichelt
catalog. 35 EUR. But you'd need an extra 6V transformer then.
(I'm lucky with those 10 W transformers I bought a few years back for 2
EUR, they have 4 different secondary windings with 73V, 65V, 24V and 9V.
Makes about 230V after the rectifier.)
Bye
René
opinionsexpressedher | uzs159 at uni-bonn.de
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