[Elecraft] Using Digital VM? (Control Board K2 # 5422)

Ron D'Eau Claire rondec at easystreet.com
Tue Mar 28 12:05:19 EST 2006


Fred, N3CSY, wrote:  

..."resistance" measurement values, at the end of each
PCB's completion in manual.  I tried making readings
with an analog VM and got values too small for some of
them...

---------------------
You've got the "good word" about those measurements, but your comment
concerned me! Be very careful to ensure that any analog meter you use for
resistance checks is designed for use with solid-state circuits! Many of the
wonderful, top-of-the-line-for-their-day analog volt-ohmmeters (VOMs) can
destroy modern solid state devices.

The problem is that they apply too much voltage and allow too much current
to flow through the circuit under test when making resistance measurements
in modern solid-state circuits! It's often plenty to destroy devices
instantly.

Ron AC7AC 



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