26 Dec
2002
26 Dec
'02
5:32 a.m.
--- Tothwolf <tothwolf(a)concentric.net> wrote:
Nice! This is something I've been researching
within the last few days. I
have a pile of 4000 series CMOS logic chips I need to test before
reinstalling in some ancient boards, but I'm at a loss as to the most
efficient and simplest way to test them. Does anyone have any
suggestions?
I think most of the chips are 4011, 4027, 4028, 4042, 4049, etc.
I have a hand-held chip tester that I got a while ago (+10 years). We
paid back its cost on the first use at work: an IBM 5150 PC that was
used as a terminal for a Northwest Instruments analyzer began beefing
about some problem or another. We gave the chip tester to an intern
and told them to start testing RAMs. Found the offending 4164 and pulled
one from the parts bins above his head. Put a $20,000 anaylzer back
to work.
In the absence of a chip tester, I have no good solution except to
build one. Given the level of effort involved, unless you are doing
it for fun, it's cheaper to go out and buy one.
-ethan
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