4 Jun
2002
4 Jun
'02
1:07 p.m.
Hi
Look at the wiring. If it looks similar to what is on the other
25L6's, you should be OK. You should check the grid voltages
on all of these tubes. Incorrect bias can cause excess plate
disapation. This will shorten the tube life to minute/hours.
See below for pinout:
http://www.nostalgiaair.org/scripts/showbase.dll?TYPE=25L6&BASE=7AC
later
Dwight
From: "Sellam Ismail"
<foo(a)siconic.com>
So I'm off to look for a 25L6 tube for my IBM 026. John Lawson says that
the tube is a 25L6 because all the other tubes in the rack are 25L6 types
and he believes they are hammer drivers. Not to doubt the venerable
Mr. Lawson, since he did used to service these, but I just want to make
sure this is in fact the right tube type that goes into the socket that is
currently empty. See photo here:
http://www.vintage.org/gallery.php?title=IBM%20026%20Printing%20Card%20Card…
unch&grouptag=IBM026
I'd hate to plug in the wrong tube and then witness volumnious
amounts of smoke billow from within the machine. Can someone verify that
the 25L6 is indeed the correct tube for the empty socket?
Thanks!
Sellam Ismail Vintage Computer Festival
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