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Old 7th February 2014, 03:08 AM   #1
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Location: Nort of Tampa Florida USA
Default How To Measure Capacitance of Panel

I read in this forum that one critical variable is the capacitance of the panel.

Topic Question: How exactly do I use my multimeter to correctly measure that capacitance?

My Martin Logan Monolith III panels are not connected to anything yet...so why can't I simply put one test lead on the front stator wire and the other lead on the rear stator wire to measure the capacitance?

I know little to nothing about panel capacitance so I would kindly appreciate any help in demystifying panel capacitance. But the main topic here is exactly how do i determine that capacitance.

kind thanks,
Eddie
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Old 7th February 2014, 04:54 AM   #2
DUG is offline DUG  Canada
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Your "voltmeter" needs to be able to measure capacitance.

Does it?
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Old 7th February 2014, 02:11 PM   #3
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If your DMM can measure capacitance you simply connect it to the stators and read the reading on the display.

Make sure that you have fully discharged the panel First by connecting all Three of the wired to the panel together for a few minutes or even hours as YMMV.

Another method is to measure its dimensions to find its capacitance.
This calculator will help you,

Parallel Plate Capacitor Capacitance Calculator

Try to be as accurate as you can with the stator to stator spacing as this can make quite a bit of difference in the calculation.

But it will give you a good general ballpark estimation of the capacitance of your panel if you do not have a DMM with a capacitance measurement function.

jer
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Old 8th February 2014, 04:03 AM   #4
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my DMM does test capacitance but is accurate only down to 10nF. Is it likely that these Martin Logan panels would have a capacitance that is less than 10nF ?

Below is the meter

Triplett Test Equipment & Tools - Model 9045 | Triplett Test Equipment

thank you,
Eddie
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Old 8th February 2014, 05:50 AM   #5
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It will work just fine.
Just measure it.

1nf= .001uf= 1000pf

jer
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