1 Sep
2007
1 Sep
'07
7:59 p.m.
As such simple testers go, I have one of these,
which is conveniently self-contained:
http://www.elexp.com/tst_100.htm
The device is called the "Leaper-1" and is
sold widely, but Electronix Express has the
best price that I could find.
That is the exact device I'm going to buy next. Can it tell the
difference between a 12/10 or a bad 10 to a good one? Have you ever
found a chip that tested good but was bad?
An advantage of a PC-based tester, such as the
testing function on a device programmer,
is that some will let you program your own test
vectors.
This one can't do custom vectors I think. Its a cheap made in china
device. I thought that I could have a recommendation for a cheap and
expensive device. Also being able to program/read EPROMs and
microcontrollers was a point in favor of the cheap TOP2004.
I did just find a bad 7400 in my pile of "tainted" chips. : ) It
wouldn't detect as anything.
The worst thing to have is a false positive. I would much rather
have a tester that returned false negatives.
Grant