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Technical and scientific discussion of amps, cables and other topics.

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JR: ""What does the AH article show? It shows that PVC insulated 12 ga. zip cord has a non-linear capacitance within the audio band (see the bottom figure on page 1) This behavior of PVC is a known factor, and has been pointed out before, see:
http://bwcecom.belden.com/college/Techpprs/ciocahalf.htm
Fig. 3
Note the PE insulated wire DOES NOT show this change in dielectric constant and thus the capacitance, so Gene's contention that "What we are seeing here is a slight fluctuation in measurement due to instrumentation error of cable inductance isolating the very small value of capacitance as frequency increases. " is total BS. He just doesn't know, and is publishing pure cr_p instead.""

Hmmm.I've seen that link...where was that?...Oh yah, I saw it in the article you are trashing...you make it look like you are presenting new facts here.

For long lengths of wire pair, be it zip, or coax, many meters are incapable of isolating the series inductance presented by the wire from the actual capacitance measurement, therebye confounding the measurement of both series resistance and capacitance.

To correct for that effect is quite simple. Cut the cable into foot long lengths, and measure the parallel capacitance of all of them. That gets rid of the long inductance in question.(Of course, it also gets rid of the cable..something I believe that vendor had no desire to allow )

Jon..

You're statements here are unwanted and unwelcome..If you have some actual facts to provide...do so..but do not waste my time and the time of others spouting typical bullshit vindictive attitude.

JR: ""Aside from all the factual information in this post, the rest of the contents are, of course, strictly my personal opinion,""

You have not made any distinction between the two..So, for all intents and purposes, you have provided nothing but garbage in your overzealous response..

Please try to keep it both factual and technical..Otherwise, many others besides me will simply toss out your entire dialogue, regardless of actual accuracy of any of it's components.

Your post is not part of the solution, it is part of the problem.

John

PS..Someone has to take the high road..


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