>It's not the wire, it's the shape. On the outside it looks like a
>standard coil, but when you take the yoke off you see that on the inside
>it has been machine formed into just the right shape to fit around the
>tube. I think it would be similar to winding the coils used in the
>pancake motors used to spin floppy disk drives -- just a bit harder
>because of the strange angles of the yoke.
I was thinking more along the lines of something like "18 ga magnet wire"
or something. I have phrases of "low inductance yoke windings" and crap in
my head, dunno if it's marketing hype or if the wire was something special
or what... Basically I'm curious if it's just plain old magnet wire and
what gauge. That should get you in the ballpark as far as inductance and
series resistance. (So it'd be safe to hook up, even if it wasn't formed
exactly right.)
From there I bet you can get to the "pretty good" picture quality just by
hand-forming the coils. There's probably improvements to be made somehow
too-- maybe with that slightly square magnet wire or something to keep the
size down.
Armed with the knowledge of the wire type and a rough turn count you could
probably take the yoke off a GO-7, pull all the wire off and wrap a crude
XY yoke. IMHO, that's the main stumbling block to making "new" XY
monitors. I think we could cobble up the deflection and HV sections, but I
doubt we could buy many off-the shelf XY yokes. ;-) (And if anyplace does
make them they're probably pretty $pendy.)
-Clay
Clayton N. Cowgill Engineering Manager
_______________________________________________________________________
/\ Diamond Multimedia Systems, Inc. clay@supra.com
\/ Communications Division http://www.supra.com/
Received on Wed Nov 5 17:42:28 1997
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