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Re: "impedance mismatch", was: Re: JavaScript unfairly blamed?

From Denis McMahon <denismfmcmahon@gmail.com>
Newsgroups comp.lang.javascript
Subject Re: "impedance mismatch", was: Re: JavaScript unfairly blamed?
Date 2014-01-30 11:06 +0000
Organization A noiseless patient Spider
Message-ID <lcdbne$2ds$1@dont-email.me> (permalink)
References (4 earlier) <nlrce9t7a8jeg5o7iushjo9mtn5nnaqaqb@4ax.com> <8b825213-a818-414e-ade1-da6c3dc2b788@googlegroups.com> <la7ie9tifqa4eq43tdm6i6557q3j2j4f0s@4ax.com> <5938dd39-59f3-4d13-89b9-5b54f250d618@googlegroups.com> <XnsA2C571A54D08Beejj99@194.109.133.133>

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On Thu, 30 Jan 2014 11:10:18 +0100, Evertjan. wrote:

> Impedance is the same, be it that the value is not linear for
> alternating current, but depends on the frequency, so Ohm's law only
> appies with a fixed frequency.

Speaking as an electrical engineer by training, ohms law holds true for 
all frequencies when considering impedance.

As the impedance varies with frequency, so the relationship between 
current and voltage varies in accordance with Ohms law such that at any 
frequency, voltage (rms or peak) = current (rms or peak) * impedance.

You also get a phase shift depending on the nature of the impedance 
(capacitative or reactive) unless the impedance is a pure resistance.

A single set of v/i/z values may only apply to a given frequency, but I 
have to correct you as the statement that "Ohm's law only applies with a 
fixed frequency" is incorrect. Ohm's law always applies regardless of the 
frequency or combination of frequencies and rate(s) of change of those 
frequencies involved.

-- 
Denis McMahon, denismfmcmahon@gmail.com

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Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-26 02:37 -0800
  Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-26 11:52 +0100
    Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-26 12:04 -0800
      Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-26 22:24 +0100
        Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-26 14:49 -0800
          Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-27 02:14 +0100
            Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-27 18:30 -0800
              Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-28 19:08 +0100
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-01-28 19:50 +0100
                Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-28 21:18 +0100
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-01-28 22:27 +0100
                Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-28 23:23 +0100
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-01-29 17:12 +0100
                Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-31 22:30 +0100
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-02-01 22:35 +0100
                Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-28 19:59 -0800
                Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-31 14:08 +0100
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-02-01 22:52 +0100
                Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-02-02 10:09 -0800
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-02-04 23:42 +0100
                Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-28 19:40 -0800
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-01-29 17:17 +0100
                Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-29 16:51 -0800
                Re: JavaScript unfairly blamed? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-01-31 01:06 +0100
                Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-28 19:36 -0800
                Re: JavaScript unfairly blamed? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-01-31 14:47 +0100
      Re: JavaScript unfairly blamed? John Harris <niam@jghnorth.org.uk.invalid> - 2014-01-27 14:36 +0000
        Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-27 16:05 -0800
          Re: JavaScript unfairly blamed? John Harris <niam@jghnorth.org.uk.invalid> - 2014-01-29 15:26 +0000
            Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-29 16:44 -0800
              "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-30 11:10 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Tim Streater <timstreater@greenbee.net> - 2014-01-30 10:38 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-30 13:30 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Denis McMahon <denismfmcmahon@gmail.com> - 2014-01-30 12:45 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-30 14:05 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-01-31 21:32 +0000
                OT: "impedance mismatch" (was: "impedance mismatch", was: Re: JavaScript unfairly blamed?) Christoph Michael Becker <cmbecker69@arcor.de> - 2014-02-01 01:15 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Denis McMahon <denismfmcmahon@gmail.com> - 2014-02-01 02:40 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-01 10:02 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-01 09:54 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Denis McMahon <denismfmcmahon@gmail.com> - 2014-01-30 11:06 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-30 14:02 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "ViLco" <villiber@tin.it> - 2014-01-30 16:24 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Denis McMahon <denismfmcmahon@gmail.com> - 2014-01-31 00:35 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-31 11:16 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-30 15:14 -0800
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-31 00:56 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-01-30 22:13 -0800
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-01-31 11:51 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Dr J R Stockton <J.R.Stockton@physics.org> - 2014-01-31 19:58 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-01 09:30 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-02-02 17:44 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-03 01:15 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? John Harris <niam@jghnorth.org.uk.invalid> - 2014-02-03 14:58 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Tim Streater <timstreater@greenbee.net> - 2014-02-03 15:36 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-03 17:59 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Tim Streater <timstreater@greenbee.net> - 2014-02-03 17:18 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-03 19:47 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? John Harris <niam@jghnorth.org.uk.invalid> - 2014-02-04 10:33 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-06 13:40 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-02-06 10:12 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-07 10:32 +0100
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-02-08 23:06 +0000
                Re: "impedance mismatch", was: Re: JavaScript unfairly blamed? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-09 10:33 +0100

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