28 Feb
2007
28 Feb
'07
4:13 p.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. :-) For example I probably wouldn't replace valve
rectifiers with
semiconductors.
I'm not sure I'd *replace* them, but I'm giving real thought to putting
in parallel power-supply circuitry that uses solid-state rectifiers and
feeds the B+ and HV power lines. But that depends on the correctness
of my guess that removing the rectifier tubes will be enough to isolate
the B+ and HV power so I can feed them externally.
I owuld consider re-winding the transformer (not
original) or useing
serveral separate transformers to replace it (even less original, but
at least the design is basically unchagned).
Yeah. Put it this way: if I were to somehow get an exact replacement
transformer, I'd like to be able to do a little unsoldering and
resoldering and have it in basically original condition. But this is
not inconsistent with using solid-state rectifiers, if my guess about
the rectifier tubes is correct.
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