PDP 11 gear finally moved

Noel Chiappa jnc at mercury.lcs.mit.edu
Wed Jul 22 10:24:36 CDT 2015

    > From: tony duell

    > it's quite possible they started off at the top end of that range, have
    > deteriorated over the years, and are still within spec. Of course
    > nobody can prove that (unless there are records of the values meaured
    > 50 years ago)

Well, I don't know about 50 years, but I know some of the restorations (where
people said they checked that their electrolytics were still withina spec)
were a while back, so _iff_ they have records of what they measured, it would
be interesting to see if there's any drift from then, to now. But I have no
idea what numbers they have, they'd have to speak to that.

    > I have no idea what was measured. The capacitance value is not the
    > whole story by any means. In fact the most important thing most of the
    > time is ESR 

Again, I have no idea what they measured, so they'd have to respond on that.


More information about the cctalk mailing list