Initially i thought that once you read the resistance between pos and negative posts, you must then SUBTRACT the the resistance of the two leads of your multimeter to get the true resistance. for example . resistance between posts is 2.6, and resistance between two multimeter leads is .6 = your real resistance is 2.0 Ohms. but i see many reviews where people are using/showing the reading on the multimeter as the true resistance. which one is correct??
Measuring resistance on new coil.
- Thread starter DarthCheddar
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Some meters, typically higher end / cost ones, have a button to push usually labeled "REL", for relative. You short the leads, press REL, and the meter "remembers" the reading. And resistance measured after that (until you turn the meter off) will automatically subtract for you.
Lower end meters without that feature... yes, you have to subtract it yourself.
From a retired electrician.
Lower end meters without that feature... yes, you have to subtract it yourself.
From a retired electrician.
if you think there is a "leed resistance " it would show up by placing both leeds together, that would be a dead short = 0 ohms, so any added resistance between leeds would be the "real" resistance.
Some meters, typically higher end / cost ones, have a button to push usually labeled "REL", for relative. You short the leads, press REL, and the meter "remembers" the reading. And resistance measured after that (until you turn the meter off) will automatically subtract for you.
Lower end meters without that feature... yes, you have to subtract it yourself.
From a retired electrician.
This is correct
The Cheap-o multimeters from Harbor Freight are good, but they're not gonna stand up for anything more than a few uses a week for a few years. And yes, you'll have to so some math with them.
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