This is the talk page for discussing improvements to the Electronic filter article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is rated C-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||||||||
|
"For even higher frequencies and greater precision, the electrons of atoms must be used." What does this mean? --Mintie 30 June 2005 00:47 (UTC) Answered via edit. --Mintie 30 June 2005 06:38 (UTC)
Page redirects from "Audio crossover", but there is no mention of audio-specific features and/or requirements for a filter used in audio crossovers. --Rohitbd
The subject of electronic filters is so vast that this article is going to need a heck of a lot of work before it looks anything like decent.It will eventually need splitting up no doubt but headings can be added now.
I'll do abit =- but could anyone else help ( even if your not too sure of your facts as the errors will get corrrected). Al
filter (signal processing) redirects here, but I think it should be an article on its own. Digital filters aren't really "electronic". — Omegatron 01:07, 6 December 2005 (UTC)
The page mentions some other filters as well, like the atomic filter, which is definitely not an electronic filter. Perhaps Filter (signal processing) should not be a redirect to this page?
I want to link to an article about filters in general (see the last paragraph of Spectral splatter) but there's only this page. The reference to filters in Spectral splatter applies both to Audio filters and Electronic filters, and any other generic signal processing filter.
I think Filter (signal processing) should exist. Romanski 19:42, 14 June 2006 (UTC)
Single and multipole are implied by the structure to be types of passive filters. There is no discussion what a pole is (which may not belong here. Perhaps a mention that it is a measure,in one sense, of how complex the filter is?). It seems to imply that (R)LC circuits are single pole but the simplest ones are two pole.
3ch Colonel hack 03:47, 17 June 2006 (UTC)
I've noticed we have all the fancy names of the filters, but not the common names. Almost not a mention anywhere of a pi type filter unless i've missed something ... -- ∞Wirelain 19:33, 1 November 2006 (UTC)
Yes, please explain why they have these names. My guess is that the horizontal wiggle in the Pi symbol, is somehow related to the horizontal inductor in the LP, whereas the two serial capacitors + one vertical inductor in the HP filter, look like a Times Roman "T". Jahibadkaret (talk) 08:28, 17 April 2019 (UTC)
I considered trying a merge, and having brick-wall filter REDIRECT into a new sub heading under electronic filter#Classification by transfer function but neither seemed as useful as providing a short explanation before linking. My motivation for brick-wall filter was finding the term used in other articles and struggling to understand it. I didnt call it a stub as I didnt think it could usefully be extended. It was more of a REDIRECT (with explanation). Rod57 (talk) 18:40, 25 October 2008 (UTC)
The analog filter and digital filter pages give the impression that whether a filter is "analog" or "digital" has everything to do with the domain over which the signal is defined. In other words, the "analog" and "digital" filter pages read more like "continuous-time" and "discrete-time" filter pages. Despite its other weaknesses, electronic filter does a better job explaining the distinctions between all of these different adjectives. In particular, the first paragraph of electronic filter admits that there can be discrete-time analog signals; that's a major improvement over the analog filter and digital filter pages. Perhaps those pages can be merged into this page? Or perhaps separate continuous-time filter and discrete-time filter pages can be made? —TedPavlic (talk/contrib/@) 00:06, 4 July 2009 (UTC)
Almost all the discussions I have seen of filter designs have talked about filter response in the steady state. I believe from experience that in some circumstances it is necessary to include considerations of the filter transient response in the design. For instance, I had to create a 50 kHz bandpass filter to isolate a signal that had also been chopped at a low frequency, 30 Hz. My first bandpass design used a combination of low-pass and high-pass Butterworth filter sections. Despite a theoretically great low frequency attenuation, the low frequency chopping signal appeared clearly in the filter output. I had much greater success when the bandpass filter was redesigned using Bessel filter sections, despite the theoretically less low frequency attenuation. I attribute this result to the differences in the transient response of the filter types. While this may be an esoteric special case, it was a real problem. I have always wished since to see a discussion of filter design that could have provided useful guidance. --AJim (talk) 02:33, 8 September 2009 (UTC)
A reference was just added to a single "hybrid" (combined LC) element filter. I have not read the reference. Whether this reference is kept or not is not my concern. My point is that this "muddies the waters" for newcomers, and that this is inevitable. I think, as a consequence, that the article should go a step further and introduce the distinction between theoretical circuit elements, as used in the article, and actual components. The article should explain that the "pure" theoretical elements discussed here can only be approximated in the real world; a complete model of a real-world element always contains all 3 theoretical types (R,L, and C). I think there must already be an article or articles showing elaborated models of real elements. The article could define or link to the ideas of the "inductance" and "capacitance" of a real resistor, for instance. The article could then explain how these "stray" or "parasitic" elements appear in models of real filters and how they affect the behavior of a filter, and the circumstances under which they can be ignored, and when the matter a great deal. It would help newcomers to understand what is meant by a description such as a "non-inductive" resistor, or a "low equivalent series resistance" capacitor, and when having such components might matter in a filter. The article could also explain the distinction between "lumped" and "distributed" elements. AJim (talk) 19:14, 15 November 2010 (UTC)
Just wondering if anyone with relevant background could enlighten me on an off-topic. My question is : is it possible to approach the problem of wind turbulence, with regards to wind mills through "turbulence filtration" using the same approach as with electronic or audio filtration ? —Preceding unsigned comment added by 193.157.194.209 (talk) 14:27, 22 December 2010 (UTC)
I do think the output filters in power supplies are important, however its not even talked about here! How are they designed (eg, types, frequency and current considerations like inductor core heat dissipation)? Charlieb000 (talk) 01:34, 21 June 2013 (UTC)
The page on Boucherot filters links to here but the topology (R and C in series to gnd) is not described on this page.
https://en.wikipedia.org/wiki/Boucherot_cell
Kenif (talk) 04:56, 16 March 2014 (UTC)
As a layman, I come across words that I am unfamiliar with on these articles, such as "Attenuation", that are not linked to their corresponding article. Would it be better to use the technical term and link it to the corresponding article or rephrase the sentence and use simpler words for ignorant, but enthusiastic newbies like myself? — Preceding unsigned comment added by 75.142.183.45 (talk • contribs) 26 jul 2015 01:37 (UTC)
@Dicklyon:, the navigation established at Filter (signal processing)#Technologies clearly points lumped circuit filters to electronic filter and distributed element filter to its own separate article. Delay line filters should also have their own article and these are pointed to (the as yet unwritten) transversal filter. A lot of material has previously been moved off this page into separate articles. Do we really want to start expanding out this page again to other topics? In my view, material on other methods of filter construction should be added to the top level filter page if they don't already have their own page. SpinningSpark 16:58, 8 September 2019 (UTC)