Talk:Impedance of different devices (derivations)

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Electronics

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Re?

What the hell is Re() in those equations? Fresheneesz 04:58, 21 April 2006 (UTC)[reply]

Real part I guess. Fresheneesz 08:48, 20 May 2006 (UTC)[reply]

"Low Impedance?"

There are a number of capacitors that are marketed as "low impedance", such as the Nichicon PW/HE series. If impedance in a capacitor is only a function of frequency and capacitance, how can one capacitor have a lower impedance than another of the same capacitance? But it might be that I'm reading the derivation wrong, so in the vein of the prior post, could someone break down exactly what the symbols in the derivation mean? 'A' is Area, 'Omega' is angular frequency, equal to 2*pi*f, that sort of thing? And maybe why substitutions are being made and that sort of thing?

In an ideal capacitor, the impedence is only a function of frequency and capacitance. However, in a real capacitor, there is also some resistance its dielectric material, and thus the impedance is slightly larger than just

{\frac {1}{\omega C}}

.

Merge proposal

The page Deriving capacitor impedance has essentially the same information as what is on this page. There is no need to have two pages with the same info so I would like to propose that Deriving capacitor impedance be merged into this article and then a redirect set. ~Dan9186 November 21, 2007 17:43 (UTC)

Since no one has disputed the merge and the pages have essentially the same information I am changing the page Deriving capacitor impedance to a redirect to this article. -- Dan9186^{(T • E • C)} December 14, 2007 23:11 (UTC)