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Is it safe to test for continuity with multimeter

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Peabody:
Would this not also apply to any test for resistance between two points?  Isn't continuity just a special case of an ohms measurement?

Also, am I the only one that worries about lead polarity?  My digital meter puts out positive voltage on the red (+) lead when measuring resistance, as you would expect, but my analog meter is the reverse.

c64:

--- Quote from: Peabody on July 14, 2020, 06:22:07 pm ---Would this not also apply to any test for resistance between two points?  Isn't continuity just a special case of an ohms measurement?

--- End quote ---
I think ohms and diode test are different

bdunham7:

--- Quote from: c64 on July 15, 2020, 03:41:52 am ---I think ohms and diode test are different

--- End quote ---

They actually aren't--in some cases.  On one of my meters the 2K Ohms and Diode check are the same thing.  The meter puts out 1mA and reads the voltage on the 2V scale.  Others may scale differently, but the mechanism is the same--both measure the voltage drop for a given current.

james_s:
I won't say it's impossible, but certainly I've never managed to damage anything that way. The continuity mode on my Fluke 87 will make an LED glow dimly but I doubt it's more than a few tens of microamps.

EEVblog:

--- Quote from: c64 on July 15, 2020, 03:41:52 am ---
--- Quote from: Peabody on July 14, 2020, 06:22:07 pm ---Would this not also apply to any test for resistance between two points?  Isn't continuity just a special case of an ohms measurement?

--- End quote ---
I think ohms and diode test are different

--- End quote ---

IIRC diode mode will switch in the low range ohms resistors and drive voltage. But DMM chip architectures do vary a lot.

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