After I changed the first bad tantalum last week, I left the PG506
running for a couple days while I watched it. Last night I was
contemplating how to modify the trigger out signal so that it occurs
75 ns before the fast rise or high amplitude signals. That would
allow it to be used in place of a Tektronix 284 pulse generator and
make it much easier to calibrate my 7S11/7T11 sampling system. The
PG506 was sitting on my desk and just after I hooked up my 2232 to
make some measurements, the fast rise output failed because the other
tantalum capacitor shorted.
The only visible evidence was a hairline crack in the epoxy which I
could not see until I removed it from the fast rise PC board. I was
disappointed that embryonic alien beings or superpower granting toxic
fumes did not erupt from the shorted tantalum.
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On Tue, 17 Jul 2012 23:55:32 -0400 (EDT), larrys@... wrote:
...while you were watching? I want the incantation you must have
pronounced over it. :-)
Congrats - nice job!
-ls-
David <davidwhess@...> wrote:
C1062 on the +16.5 volt supply was the first shorted tantalum. C1067
on the -16.5 volt supply which I was thinking of replacing shorted
today while I was watching.