See Electronics Notebook 6!
Very useful
for checking PCBs for breaks in the track work. Resistance above 150R will not
be detected.
With a piezo for an audible indication so that you can keep you
eyes on the probe tip.
With a very short response time it will allow you to
make tests very quickly and listen for the beeps. It will only respond to a
definite short circuit or one that has a resistance of 50R or less. It will not
respond to values above 80R or the voltage drop across a diode. This makes it
better than a common multimeter with an internal protection
diode.
Board dimensions: 3.4in x
0.7in.
3 Page article.