Quote:
Originally Posted by old_coot88
Ours were homemade. Used #44 bulb since it's rated 250ma., just the right current range. Not sure what the #39 is rated.
On a side note, when using a milliameter in the cathode leg (an analog meter that is), it's not necessary to put a cap across the meter, contrary to popular belief.
If trying to use a digital meter for K current, all bets are off. Digitals tend to go nuts on spikey or complex waveforms, and the reading ain't to be trusted, cap or no cap.
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Digital meters have their place, but not for certain applications. They take too long to make up their mind, when instant readings have to be taken.