13 Aug
2006
13 Aug
'06
8:43 a.m.
On Sunday 13 August 2006 08:48 am, Bob wrote:
On Sat, 12 Aug 2006 22:34:21 -0400, William Donzelli
wrote:
THen there were those that that mounted vacum tubes on PCB's and the
circuit heat of the tubes lifted traces over time. Not to mention carbon
trails and arcing around load resistors mounted too close and cooked the
boards. PSB's were not reliable untill the advent of transistors !
The tube sockets that mounted to a board with round pins (that were split in
the middle) or with flat pins weren't too bad, but I remember encountering
some stuff, one GE set in particularl stands out in my memory, where they'd
actually put a hole in the board the diameter of the socket! That one had
one or more sockets missing, along with several tubes missing. It amazed me
that the owner actually considered it worth fixing when I came up with the
estimate at the time... (1974!)
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
Really?? That was before my time (born in '69)...I had no idea
people whined about the advent of PCBs.
Yes, but just like the SMT issue, it was mostly because people were
not us9ing the right tools. Early PCBs were crap - no wonder their
200W Wen soldering guns lifted the traces.
--
Will