Trying to determine what polarity Laptop adaptor is with Multimeter
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Trying to determine what polarity Laptop adaptor is with Multimeter
If the multimeter is showing the voltage when pos terminal is connected to tip & neg ter to outside barrel. Does that mean its positive polarity? And when the terminals are swapped there is a - sign before the voltage.
If someone could please advise me, thanks
If someone could please advise me, thanks
#4
If you see the - sign on the meter reverse the leads and that will be the correct polarity,Red lead will be on the +, as PB stated most mfg.mark their devices and that is not useless information .
Geo
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