On Sat, 21 Jul 2012 13:37:29 -0400, Jamie
t wrote:

I just pulled a suspect diode out of a dead board. It bears the
numbers SR506. This seems to be a Schottky barrier diode.

More than you ever wanted to know about component testing:
http://www.repairfaq.org/sam/semitest.htm

Some of my assorted digital volts guessers have a "diode" check
position. The difference is that they draw some current through the
diode, in order to eliminate the capacitive charge up effects that
you're seeing.

Another way to test diodes is a build a crude curve tracer.
http://www.repairfaq.org/sam/semitest.htm#stitc
Find a sweep generator that will do a ramp or triangular wave. Put
the diode in series with a current limiting resistor across the
generator output. Put a scope across the diode. You should see the
something vaguely resembling the diode characteristic curve. Something
like this but with an audio generator instead of power xformer:
http://www.techlib.com/electronics/curvetrace.html


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558