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Multimeters With Low Ohms Function

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HKJ:

--- Quote from: ermionesrl on January 29, 2022, 03:37:57 pm ---It was interesting to know multimeter input capacitance to understand a supposed anomalous settling time in a measurement done by AVGresponding. Of course ideal would be to measure capacitance in ohm function, but I think it's very difficult to do it, so I did in DCV just to have at least an idea of the order of magnitude of the value.

--- End quote ---

Capacity in DCV basically has nothing to do with ohm ranges.
I explain a bit about multimeters here: https://lygte-info.dk/info/DMMDesign%20UK.html
and here: https://lygte-info.dk/info/DMMDesignProtection%20UK.html#Ohm/Continuity/Diode/Capacity

The second link shows the typical input circuit for ohms (and other ranges), the first link shows the typical measurement circuit.

AVGresponding:

--- Quote from: HKJ on January 29, 2022, 03:47:06 pm ---
--- Quote from: ermionesrl on January 29, 2022, 03:37:57 pm ---It was interesting to know multimeter input capacitance to understand a supposed anomalous settling time in a measurement done by AVGresponding. Of course ideal would be to measure capacitance in ohm function, but I think it's very difficult to do it, so I did in DCV just to have at least an idea of the order of magnitude of the value.

--- End quote ---

Capacity in DCV basically has nothing to do with ohm ranges.
I explain a bit about multimeters here: https://lygte-info.dk/info/DMMDesign%20UK.html
and here: https://lygte-info.dk/info/DMMDesignProtection%20UK.html#Ohm/Continuity/Diode/Capacity

The second link shows the typical input circuit for ohms (and other ranges), the first link shows the typical measurement circuit.

--- End quote ---

Given the varied responses by different meters, I think it's fair to say that some at least may be atypical, in implementation if not broad theory of operation.

HKJ:

--- Quote from: AVGresponding on January 29, 2022, 05:28:37 pm ---Given the varied responses by different meters, I think it's fair to say that some at least may be atypical, in implementation if not broad theory of operation.

--- End quote ---

That is correct, but all DMM's has a high-z voltage input and at least one low-z path (current output) in ohms (Together with a very high z input path), i.e. very different.

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