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thank you very much for your conributions to the topic, on transformers.....
I'm a big fan of keeping the fog index as low as possible on the encyclopedia; I've reverted a paragraph that I didn't think moved the article toward clarity. The previous paragraph was described "as if it was written by a 5th grader" which I think is a high compliment. Saying "simply" is pompous. Extra links don't clarify the purpose of this paragraph. We don't need to describe all of heat transfer theory in this article. We're talking about losing heat, so the additional adjective "thermal" here is superfluous. "Relatively low" is a foggy way of saying "small". "oils containing polychlorinated biphenyls (PCBs) as a flame retardant" is factually incorrect; PCB is not a flame retardant and oils with quite high levels of PCB will still burn and were not approved for indoor use with out a vault. Nearly pure PCB was used, with only inadvertant traces of mineral oil. And so on. The purpose of an encyclopedia article is to transmit information, not to display long leaky sentences full of pompous generalizations and irrelevant links. -- Wtshymanski ( talk) 13:08, 20 August 2010 (UTC)
Here for discussion purposes is first-cut transformer taxonomy which may serve as checklist for further mulling, massaging and development planning:
Table 1: Power Transformer Taxonomy
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Cblambert ( talk) 06:33, 17 February 2012 (UTC)
Many torroidal cores I have witnessed are laminated types. Should the first section be labelled "Rectangular" or "E I stamped" or something similar? The titles overlap as they as now. 174.118.142.187 ( talk) 03:38, 11 January 2013 (UTC)
'Home manufacturing
It is possible to make the transformer laminations by hand too. Such transformers are encountered at times in 3rd world countries, using laminations cut from scrap sheet steel, paper slips between the laminations, and string to tie the assembly together. The result works, but is usually noisy due to poor clamping of laminations.
picture device in use'
"its been there for four years" is not a reason for challenging removal. Just because its gone by unnoticed does not mean that it is consensus. This looks like a publication of DIY project and no evidence is presented taht "it is encountered" at "3rd world countries" and this fails WP:V and it is not easily verified without citation. Therefore, removal is justified. The link to external hosting site to introduce non-free image to circumvent the creative commons requirement should also be questioned. Cantaloupe2 ( talk) 15:12, 14 January 2013 (UTC)
I have seen transformers that looked like homemade quality for sale in third world countries. I don't know that they actually were homemade. Gah4 ( talk) 19:27, 20 September 2016 (UTC)
I have removed this entry from the article. The only connection they have with transformers is that that word appears in the name. To me, the defining feature of a transformer is having a primary and secondary winding, or more fundamentally, having a turns ratio, n by which voltage and current are transformed. Quarter-wave transformers are not even functionally equivalent to this. An ideal transformer behaves as,
which obviously is not frequency dependent. A quarter-wave impedance transformer, on the other hand, behaves as,
which will be all over the place with frequency (try putting a capacitor on the output for instance) even in the ideal case - and these things can only be anywhere near ideal over a very narrow band. In fact, in terms of ideal fundamental elements, this is a variety of gyrator, not transformer. Spinning Spark 18:12, 15 January 2013 (UTC)
The equivalent power rating of the autotransfomer is lower than the actual load power rating. It is calculated by: load VA × (|Vin – Vout|)/Vin. [1] The reference is for step-down transformers. Seems to me that for step-up transformers it should be load VA × (|Vout – Vin|)/Vout by symmetry. (Even more, note that the reference uses Vh and Vl for the description, which sound like V(high) and V(low). In either case, it would be (Vhigh-Vlow)/Vhigh where Vhigh is the higher of the two voltages, and Vlow is the lower of the two. Gah4 ( talk) 21:02, 25 August 2016 (UTC)
References
Under RF transformers there is a discussion of ferrite core transformers that only mentions IF transformers. Ferrite cores are commonly used for RF transformers, such as impedance matching between 75 ohm and 300 ohm radio and TV antennas and inputs. I believe we really do need a section on IF transformers that is better than the current one under RF transformers. They are also not well described in the Superheterodyne article. Gah4 ( talk) 19:24, 20 September 2016 (UTC)
There was a question on quora "what an What is an interphase transformer" so I think a wikipedian should describe one. I do not know enough. the transformer sedscription is fascinating this is a 1MW (megawatt) multiphase transformer that makes more anodes out of three phase power. something that amazing should have a description. — Preceding unsigned comment added by 97.90.99.62 ( talk) 21:14, 12 January 2017 (UTC)
Energy efficient transformer including dry type transformer Fuchumona kumar ( talk) 12:11, 29 July 2018 (UTC)
Under pulse transformers, it says: Pulse transformers by definition have a duty cycle of less than 0.5. The transformers commonly used with UTP Ethernet are usually called pulse transformers, though don't necessarily run at less than 0.5 duty cycle. 10baseT uses Manchester coding, which I would call 100% duty cycle. Since transformers don't pass DC, Ethernet signals are carefully designed to minimize the DC offset over appropriate time scales. Gah4 ( talk) 21:14, 6 June 2019 (UTC)
It is helpful that this article covers Instrument Transformers, at least at a high level. At present, there is useful and much more detailed article Current transformer. There is also an article Instrument transformer, but it is not particularly well developed, and has content about current transformers that directly overlaps with the article specifically on that topic. There is currently no separate article on Voltage transformer.
Here is a suggestion for feedback:
I also propose to include all these articles within Wikiproject: Electrical engineering.
I am willing to undertake the above, if there is support (albeit that I might need some brief guidance with changing re-directs, and moving a page). Marshelec ( talk) 00:46, 17 April 2020 (UTC)
The two types of transformers are:Power transformer Chopper transformer — Preceding unsigned comment added by 154.159.252.247 ( talk) 12:06, 11 August 2023 (UTC)
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
|
thank you very much for your conributions to the topic, on transformers.....
I'm a big fan of keeping the fog index as low as possible on the encyclopedia; I've reverted a paragraph that I didn't think moved the article toward clarity. The previous paragraph was described "as if it was written by a 5th grader" which I think is a high compliment. Saying "simply" is pompous. Extra links don't clarify the purpose of this paragraph. We don't need to describe all of heat transfer theory in this article. We're talking about losing heat, so the additional adjective "thermal" here is superfluous. "Relatively low" is a foggy way of saying "small". "oils containing polychlorinated biphenyls (PCBs) as a flame retardant" is factually incorrect; PCB is not a flame retardant and oils with quite high levels of PCB will still burn and were not approved for indoor use with out a vault. Nearly pure PCB was used, with only inadvertant traces of mineral oil. And so on. The purpose of an encyclopedia article is to transmit information, not to display long leaky sentences full of pompous generalizations and irrelevant links. -- Wtshymanski ( talk) 13:08, 20 August 2010 (UTC)
Here for discussion purposes is first-cut transformer taxonomy which may serve as checklist for further mulling, massaging and development planning:
Table 1: Power Transformer Taxonomy
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Cblambert ( talk) 06:33, 17 February 2012 (UTC)
Many torroidal cores I have witnessed are laminated types. Should the first section be labelled "Rectangular" or "E I stamped" or something similar? The titles overlap as they as now. 174.118.142.187 ( talk) 03:38, 11 January 2013 (UTC)
'Home manufacturing
It is possible to make the transformer laminations by hand too. Such transformers are encountered at times in 3rd world countries, using laminations cut from scrap sheet steel, paper slips between the laminations, and string to tie the assembly together. The result works, but is usually noisy due to poor clamping of laminations.
picture device in use'
"its been there for four years" is not a reason for challenging removal. Just because its gone by unnoticed does not mean that it is consensus. This looks like a publication of DIY project and no evidence is presented taht "it is encountered" at "3rd world countries" and this fails WP:V and it is not easily verified without citation. Therefore, removal is justified. The link to external hosting site to introduce non-free image to circumvent the creative commons requirement should also be questioned. Cantaloupe2 ( talk) 15:12, 14 January 2013 (UTC)
I have seen transformers that looked like homemade quality for sale in third world countries. I don't know that they actually were homemade. Gah4 ( talk) 19:27, 20 September 2016 (UTC)
I have removed this entry from the article. The only connection they have with transformers is that that word appears in the name. To me, the defining feature of a transformer is having a primary and secondary winding, or more fundamentally, having a turns ratio, n by which voltage and current are transformed. Quarter-wave transformers are not even functionally equivalent to this. An ideal transformer behaves as,
which obviously is not frequency dependent. A quarter-wave impedance transformer, on the other hand, behaves as,
which will be all over the place with frequency (try putting a capacitor on the output for instance) even in the ideal case - and these things can only be anywhere near ideal over a very narrow band. In fact, in terms of ideal fundamental elements, this is a variety of gyrator, not transformer. Spinning Spark 18:12, 15 January 2013 (UTC)
The equivalent power rating of the autotransfomer is lower than the actual load power rating. It is calculated by: load VA × (|Vin – Vout|)/Vin. [1] The reference is for step-down transformers. Seems to me that for step-up transformers it should be load VA × (|Vout – Vin|)/Vout by symmetry. (Even more, note that the reference uses Vh and Vl for the description, which sound like V(high) and V(low). In either case, it would be (Vhigh-Vlow)/Vhigh where Vhigh is the higher of the two voltages, and Vlow is the lower of the two. Gah4 ( talk) 21:02, 25 August 2016 (UTC)
References
Under RF transformers there is a discussion of ferrite core transformers that only mentions IF transformers. Ferrite cores are commonly used for RF transformers, such as impedance matching between 75 ohm and 300 ohm radio and TV antennas and inputs. I believe we really do need a section on IF transformers that is better than the current one under RF transformers. They are also not well described in the Superheterodyne article. Gah4 ( talk) 19:24, 20 September 2016 (UTC)
There was a question on quora "what an What is an interphase transformer" so I think a wikipedian should describe one. I do not know enough. the transformer sedscription is fascinating this is a 1MW (megawatt) multiphase transformer that makes more anodes out of three phase power. something that amazing should have a description. — Preceding unsigned comment added by 97.90.99.62 ( talk) 21:14, 12 January 2017 (UTC)
Energy efficient transformer including dry type transformer Fuchumona kumar ( talk) 12:11, 29 July 2018 (UTC)
Under pulse transformers, it says: Pulse transformers by definition have a duty cycle of less than 0.5. The transformers commonly used with UTP Ethernet are usually called pulse transformers, though don't necessarily run at less than 0.5 duty cycle. 10baseT uses Manchester coding, which I would call 100% duty cycle. Since transformers don't pass DC, Ethernet signals are carefully designed to minimize the DC offset over appropriate time scales. Gah4 ( talk) 21:14, 6 June 2019 (UTC)
It is helpful that this article covers Instrument Transformers, at least at a high level. At present, there is useful and much more detailed article Current transformer. There is also an article Instrument transformer, but it is not particularly well developed, and has content about current transformers that directly overlaps with the article specifically on that topic. There is currently no separate article on Voltage transformer.
Here is a suggestion for feedback:
I also propose to include all these articles within Wikiproject: Electrical engineering.
I am willing to undertake the above, if there is support (albeit that I might need some brief guidance with changing re-directs, and moving a page). Marshelec ( talk) 00:46, 17 April 2020 (UTC)
The two types of transformers are:Power transformer Chopper transformer — Preceding unsigned comment added by 154.159.252.247 ( talk) 12:06, 11 August 2023 (UTC)