On December 6, 2018 at 04:11, Ernie Gilman said...
A resistance measurement that changes when you reverse the polarity means it's connected to some semiconductor circuit
This depends on the measurement voltage used by the meter. I had a little pen style meter that used such a low voltage for resistance measurements that semiconductors would not turn ON. It's easy enough to check your meter for this characteristic -- simply measure the resistance of a diode, then reverse the leads and measure again. If the readings are dramatically different, your meter can turn ON a semiconductor.
Last edited by buzz on December 6, 2018 09:27.