[Elecraft] Elecraft DMM vs VOM

[Martin.Evans@simoncarves.com]

Hi guys. I've just started putting together my K1 and I've seen a couple of
refs to using a DMM rather than a VOM for resistance and voltage checks on
K1/K2 kits. For the English around here I presume that a VOM is the US term
for an analogue moving coil instrument (volt-ohm meter?). Now I know that a
DMM has a very high input impedance so that it doesn't load the circuit and
therefore is superior to a VOM for accuracy, but what is wrong with a VOM
for simple checks. The voltage on the test leads is normally very low ( a
few volts, max of 3V for my little unit) can this damage semiconductor
devices, I wouldn't have thought so.

I do have a DMM but rather like using my little ICE multiple plug steam
powered tester for continuity and component value checking. For continuity
of joints there is something comforting about seeing a moving coil meter
swing over to the fat zero!

Any thoughts.



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http://www.simoncarves.com

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