[R-390] Ballastubes

[David Wise]

> From: Barry Hauser [mailto:barry at hausernet.com]
> 
> A caution on the paperclip thing ...
> 
> I have recently found that some chrome paper clips are not exactly
> conductive out of the box.  Apparently they're covered with 

This was enough to drive me out of hiding.  I'll email to
anyone who asks, a PostScript printout file of the schematic
for a reverse phase control analog prototype of the 3DW7
that I built a while ago before going digital*.  If you've
got good eyes, you can squeeze it into a "tubester" form factor,
it dissipates only about half a watt.

Just be sure to use conductive paper clips for the "pins", heh.

73,
Dave Wise

* I had a digital version ready to solicit buyers,
but when someone mentioned simulating the olde-tyme
orange glow I decided to take up the challenge.
I'm still working on it as time permits, but it's
a ways down my priority list.