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The content ofLumped capacitance model wasmerged intoLumped-element model on 16 December 2014. The former page'shistory now serves toprovide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. For the discussion at that location, see itstalk page.

The Lumped element model seems t obe a special case or at least closely related to the RLC circuit. --Werfur (talk)20:43, 21 October 2012 (UTC)[reply]

I have removed a paragraph referring to a supposed failure of the lumped element model for low impedance devices. Are there any references for such a phenomena?Tomer Ish Shalom13:52, 30 November 2006 (UTC)[reply]

Lumped element is a finite element in space and time required to travel within a lumped element is considered negligible, whereas distributed element is infintesimal. I have corrected the definition.

Shouldn't there be some discussion of the use of lumped-element models in other engineering fields? I'm studyingthermoacoustics right now, and I've seen many papers modeling fluid dynamics, etc. as lumped-element circuits (cf.[1],[2]).Robin Z (talk)14:14, 21 November 2007 (UTC)[reply]

I think some discussion of how and why the LEM came to be would go well with this article, along with some discussion of its origins (i.e. did it come from Maxwell's equations under certain restrictions (no current build-up on elements, etc) or did it originate with Kirchoff or was it maybe even before Kirchoff and his laws? Also, this article is lacking any references. Maybe someone with knowledge in this area could expand it better than I. I've had a look around on the internet and in the few textbooks I have, but to no avail.90.204.100.172 (talk)10:31, 30 August 2009 (UTC)[reply]

I was appalling at Maths when I went to Uni to study Computer Science, so I had a real hard time with circuit theory.That's my background, now the question: Does the Hybrid Pi model of the transistor also fit into this article as an LEM?—Precedingunsigned comment added byH-b-g (talk •contribs)19:53, 19 July 2010 (UTC)[reply]

Bruyninc (talk)10:14, 17 July 2010 (UTC)[reply]

Seriously. It couldn't be a more perfect example of abstract nonsense if it tried. Were you *trying* to win a prize? I'm reasonably sharp, but boy, oh, boy this had me totally stumped until I did a quick Google and turned up this eminently more reasonable explanation (for the electromagnetics aspect):

A section of a transmission line designed so that electrical or magnetic energy is concentrated in it at specified frequencies, and inductance or capacitance may therefore be regarded as concentrated in it, rather than distributed over the length of the line.

Compare and contrast with:

simplifies the description of the behaviour of spatially distributed physical systems into a topology consisting of discrete entities that approximate the behaviour of the distributed system under certain assumptions

Please sort it out. It doesn't matter what the discipline may be; the opening paragraph is supposed to be digestible by anyone looking up a quick cross-reference.Blitterbug (talk)21:07, 3 October 2011 (UTC)[reply]

The originalLumped capacitance model was isolated and need some more "merging edits" to be consistent with other "lumped systems" (ex. of theMechanical-electrical analogies)... See alsoIsomorphism. --Krauss (talk)08:13, 16 December 2014 (UTC)[reply]

(section moved from original)

I have created this article having noticed that this material was scattered about in several different places and it seemed to make sense to consolidate it. Also this article was on the list atWikipedia:Requested articles/Applied arts and sciences.

It may need some more work as this is really just a consolidation at this point.

Dhollm (talk)10:19, 10 August 2010 (UTC)[reply]

Good job. I'm fixing it up and referencing it whenever such conditions are referenced. For example, I note with some trepidation that "Newton's law of cooling" (basically the solution for a subclass of lumped capacitance systems) is mentioned as "the" solution forconvective heat transfer! It really has nothing to do with convective heat transfer per se, except that it often happens that it turns up when convection cooling is slow and the object cooled conducts heat internally well. So all the transientheat conduction cases where this model is applicable or not, need to be sorted out. Theconvection article has a much better approach to convective heat transfer than does the one onconvective heat transfer!

But thanks-- it can all be dircted here, when needed. Newton's law of cooling should probably be directed here also, and I'll do that.SBHarris23:27, 5 November 2011 (UTC)[reply]

The originalLumped matter discipline was isolated and need some more "merging edits" to be consistent... --Krauss (talk)08:21, 16 December 2014 (UTC)[reply]

I don't know enough about the math markup to be able to do this, but the listed expressions for radiation equivalence is only valid in the case of one surface being much greater than the other one. If somebody else can notate that, or show me how, I would appreciate it.W0lfie (talk)19:30, 11 April 2017 (UTC)[reply]

@W0lfie: SeeHelp:Displaying a formula.SpinningSpark00:00, 13 April 2017 (UTC)[reply]

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