RE: Magnepan MG12 Frustration, Please Help.

Posted by neolith (A) on September 6, 2012 at 18:47:43

In Reply to: RE: Magnepan MG12 Frustration, Please Help. posted by pictureguy on September 6, 2012 at 12:08:13:

The typical digital ohm-meter is a constant current device and the "meter" measures voltage which is directly proportional to the resistance. When the meter is connected across the cap, current rushes into the capacitor and the meter no longer has a constant current. However, once the capacitor reaches full charge, no current flows through it and the measurement will be stablized. The time constant of a series R-C circuit is RxC and occurs when at 63% of full charge. So the time to stablize will depend on the internal resistance of the meter. Typically at the lowest range (0-200 ohms) the resistor is about 2.7k so the time constant is 0.135 seconds. It will take 5 time constants to reach steady state so the meter should be stable in a little over a 1/2 second.

Probably more information than you wanted to know.

"Our head is round in order to allow our thoughts to change direction." Francis Picabia

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Follow Ups Full Thread

Topic - Magnepan MG12 Frustration, Please Help. - greenamyer 15:31:07 09/05/12 (16)

Can I suggest you register .... - andyr 16:57:32 09/06/12 (2)

Then he could only post under one name.. - neolith 05:26:05 09/07/12 (1)

Actually, I think he did register once under the moniker of - Opus 104 17:04:44 09/07/12 (0)

do you live in the third world? - farfetched 13:34:16 09/06/12 (6)

RE: do you live in the third world? - IEaudiodude 14:13:17 09/06/12 (5)

touche - farfetched 18:07:43 09/08/12 (0)

RE: do you live in the third world? - JBen 15:44:09 09/06/12 (2)

RE: do you live in the third world? - IEaudiodude 20:25:39 09/06/12 (0)

Huh? /nt\ - Opus 104 16:15:48 09/06/12 (0)

Some folks have no business fu#$&ing with it. That's his point. /nt\ - Opus 104 14:20:06 09/06/12 (0)

RE: Magnepan MG12 Frustration, Please Help. - neolith 09:32:57 09/06/12 (4)

RE: Magnepan MG12 Frustration, Please Help. - pictureguy 12:08:13 09/06/12 (3)

RE: Magnepan MG12 Frustration, Please Help. - neolith 18:47:43 09/06/12 (2)

RE: Magnepan MG12 Frustration, Please Help. - pictureguy 21:17:08 09/06/12 (1)

RE: Magnepan MG12 Frustration, Please Help. - neolith 05:08:58 09/07/12 (0)

RE: Magnepan MG12 Frustration, Please Help. - stigs 16:41:14 09/05/12 (0)

Follow Ups

RE: Magnepan MG12 Frustration, Please Help. - neolith 18:47:43 09/06/12 (2)

RE: Magnepan MG12 Frustration, Please Help. - pictureguy 21:17:08 09/06/12 (1)

RE: Magnepan MG12 Frustration, Please Help. - neolith 05:08:58 09/07/12 (0)

RE: Magnepan MG12 Frustration, Please Help.

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