28 Feb
2007
28 Feb
'07
8:02 a.m.
One further note - on a scale of 1-10, how authentic
do you want the
repaired scope to be?
I'm a bit Tonyish on this: I'd take unauthentic but working over
authentic but broken any day. :-)
I'm mostly looking for a working 'scope cheap, basically. If that
means an external pod with a half-dozen transformers in it, well, so be
it. It's not as if I'd be making it impossible to rip that out and
install a single replacement if I manage to luck into one.
If the answer is 0-2, consider replacing the HV and B+
rectifiers
with solid state - this eliminates three filament windings - assuming
you generate the HV via another means as I suggested in my last
posting, all you need now is the main filiment windings and the CT B+
windings which should not be all that hard to find in a single
transformer.
I was thinking about something like this, yes. I haven't traced the
circuit enough to be certain, but I think that if I leave the rectifier
tubes out of their sockets, I should be able to drive the B+ and HV
lnies with pretty much anything that can supply the required voltages
and handle the current draw.
I was actually considering replacing most of the circuitry with
solid-state stuff, leaving just the last couple of tubes to drive the
deflection plates.
Btw - I just did a google search on "transformer
rewinding" and there
are a few people advertising that they do this... Might not hurt to
make a few inquiries.
That's something I've been considering too, finding someone who does
custom transformers. With proper equipment it should be pretty easy,
I'd think, but you sorta have to do it as a business to amortize the
cost of the gear over many jobs to make it worthwhile.
/~\ The ASCII der Mouse
\ / Ribbon Campaign
X Against HTML mouse at rodents.montreal.qc.ca
/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B