8 Aug
2011
8 Aug
'11
3:39 a.m.
Incidentally, a while back you responded to an email about the H7140 PSU
from the PDP11/24, for which I think you also have the fiche. I am still
interested in a couple of bits of information from the printset for the
newer design, would you be able photograph a couple of pages? I am
interested in the Input Assembly and the Bias and Interface board. On the
latter I have a specific question: My bias and interface board had what
looked like a broken track, and it did look broken rather than deliberately
cut. Could you tell me if the collector of Q2 (p87 of the older printset on
bitsavers) is connected to anything? If so, what is it connected to?
Been trawling the fiche and net while I have the IPB docs for the
H7140 I dont seem to have the technical manual with the circuit
so cannot give any circuit details,
the H7140 is not mentioned in the index part only the older docs on
bitsavers seem to cover it
so after some digging I only find EK-BA11A-TM-003
that points to MP00832
http://manx.archivist.info/publication.php?search=00832&company=1&i…
gives
http://www.mainecoon.com/classiccmp/PDP-11-44/BA11-A%20FMPS%20MP00832.tif
and the illustrated parts EK-H7140-IP which I have on fiche
does not seem well documented
Unfortunately I don't have IRC so we'll have to rely on email.
you have
internet! therefore you have irc, just install xchat (linux)
ychat (windaz)
Dave Caroline