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As I understand it, photointerrupters (transmissive photosensors) and photoreflectors (reflective photosensors) are sometimes referred to as slotted and reflective optocouplers, respectively. They are used to build incremental optical rotary encoders; these, again, are used in ball-type computer mice. However, these things are not what one would usually think of when talking about an optocoupler or optoisolator. Until someone finds the time to explain this properly (sorry, I don't have it right now), the sections referring to these topics are simply confusing. I have therefore removed them from the article and put them here:
-- 128.130.60.86 11:35, 26 September 2007 (UTC)
This article could use an image of the schematic representation of an opto-isolator to better get the point across.-- Hooperbloob 01:20, 8 Jun 2005 (UTC)
How about a circuit? - Omegatron 14:53, Jun 8, 2005 (UTC)
These two articles seem to cover the same thing. -- Bob Mellish 18:45, 7 October 2005 (UTC)
There should be some discussion on analog versus digital isolation. Efadae ( talk) 21:33, 17 April 2009 (UTC)
The link to one of the pdf's listed on the bottom of the page is dead. —Preceding unsigned comment added by 212.37.244.183 ( talk) 10:05, 17 June 2009 (UTC)
The link http://www.radiation-effects.com/pdf/RLAT.pdf is still dead today 11 nov 2009, free to remove
None of these links works .. -- 174.67.243.57 ( talk) 15:54, 21 February 2014 (UTC)
I'm doing it user space right now. If you plan to edit the article in the nearest week or two, ping me please.
East of Borschov 13:21, 3 November 2010 (UTC) done.
East of Borschov 17:36, 5 November 2010 (UTC)
Weber's book seems sufficient to claim that Vactrol is used generically today. He writes: "The light dependent resistor, also known as LDR or vactrol, is a device... " Tijfo098 ( talk) 18:57, 5 November 2010 (UTC)
What does
Both transformers and opto-couplers are effective in breaking ground loops caused by high or noisy return currents in ground wires, and common in industrial and stage equipment.
mean? I cannot fix it without knowing what the writer intended.-- Anon423 ( talk) 19:36, 6 November 2010 (UTC)
Does
All materials used in opto-isolator packages must have matched thermal expansion properties.
refer to just silicone dome designs, or to all opto-isolators? It is unclear from the context.-- Anon423 ( talk) 19:49, 6 November 2010 (UTC)
I have copy-edited the article, but am holding off on removal of the copy edit tag for now until I can get some feedback on my work. I have also added an expert-subject tag for the confusing sections. —Preceding unsigned comment added by Anon423 ( talk • contribs) 00:25, 7 November 2010 (UTC)
considering the fact that Solid State Relays use Optical isolators, having both articles separate seems redundant (contributor formally known as KB1KOI) 2012-12-03, 18:20 UTC — Preceding unsigned comment added by 216.19.115.116 ( talk) 18:19, 3 December 2012 (UTC)
The International Standard IEC60050 for the naming of electrotechnical components only accepts the names "photocoupler" and "optocoupler". Is there a reason why the article name is non standard? -- 91.15.67.235 ( talk) 09:05, 24 August 2013 (UTC)
The result of the move request was: no consensus with no prejudice for a new discussion to be started for the " Optoisolator" alternative. (non-admin closure) Steel1943 ( talk) 23:08, 25 May 2016 (UTC)
Opto-isolator → Optocoupler – Most, if not all, manufacturers refer to these devices as Optocouplers. It is true that some also give opto-isolator as an alternative name. The primary function of the device is to provide signal coupling by optical means. The device has a valuable secondary chartacteristic of providing electrical isolation by a dielectic barrier. Constant314 ( talk) 16:17, 30 April 2016 (UTC) --Relisted. George Ho ( talk) 06:11, 8 May 2016 (UTC)
Are we sure "dielectric" is the right word for the bit in the middle of an optoisolator? A dielectric is an insulator that can be polarised. This is surely not necessary in an opto, it only needs to be an insulator (and transparent!). Are dielectrics used in real-life optos, if they are, why? Is it a necessary property? Couldn't a theoretical opto be built that meets all the specifications, using a non-dielectric insulator? Depending on this, wouldn't "insulator" be a better word? It'd also be advantageous to beginners in electronics, who might not know what a dielectric is. After all, someone experienced in electronics wouldn't need to look up what an opto is!
84.67.73.190 ( talk) 05:03, 19 November 2020 (UTC)
This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||||||
|
As I understand it, photointerrupters (transmissive photosensors) and photoreflectors (reflective photosensors) are sometimes referred to as slotted and reflective optocouplers, respectively. They are used to build incremental optical rotary encoders; these, again, are used in ball-type computer mice. However, these things are not what one would usually think of when talking about an optocoupler or optoisolator. Until someone finds the time to explain this properly (sorry, I don't have it right now), the sections referring to these topics are simply confusing. I have therefore removed them from the article and put them here:
-- 128.130.60.86 11:35, 26 September 2007 (UTC)
This article could use an image of the schematic representation of an opto-isolator to better get the point across.-- Hooperbloob 01:20, 8 Jun 2005 (UTC)
How about a circuit? - Omegatron 14:53, Jun 8, 2005 (UTC)
These two articles seem to cover the same thing. -- Bob Mellish 18:45, 7 October 2005 (UTC)
There should be some discussion on analog versus digital isolation. Efadae ( talk) 21:33, 17 April 2009 (UTC)
The link to one of the pdf's listed on the bottom of the page is dead. —Preceding unsigned comment added by 212.37.244.183 ( talk) 10:05, 17 June 2009 (UTC)
The link http://www.radiation-effects.com/pdf/RLAT.pdf is still dead today 11 nov 2009, free to remove
None of these links works .. -- 174.67.243.57 ( talk) 15:54, 21 February 2014 (UTC)
I'm doing it user space right now. If you plan to edit the article in the nearest week or two, ping me please.
East of Borschov 13:21, 3 November 2010 (UTC) done.
East of Borschov 17:36, 5 November 2010 (UTC)
Weber's book seems sufficient to claim that Vactrol is used generically today. He writes: "The light dependent resistor, also known as LDR or vactrol, is a device... " Tijfo098 ( talk) 18:57, 5 November 2010 (UTC)
What does
Both transformers and opto-couplers are effective in breaking ground loops caused by high or noisy return currents in ground wires, and common in industrial and stage equipment.
mean? I cannot fix it without knowing what the writer intended.-- Anon423 ( talk) 19:36, 6 November 2010 (UTC)
Does
All materials used in opto-isolator packages must have matched thermal expansion properties.
refer to just silicone dome designs, or to all opto-isolators? It is unclear from the context.-- Anon423 ( talk) 19:49, 6 November 2010 (UTC)
I have copy-edited the article, but am holding off on removal of the copy edit tag for now until I can get some feedback on my work. I have also added an expert-subject tag for the confusing sections. —Preceding unsigned comment added by Anon423 ( talk • contribs) 00:25, 7 November 2010 (UTC)
considering the fact that Solid State Relays use Optical isolators, having both articles separate seems redundant (contributor formally known as KB1KOI) 2012-12-03, 18:20 UTC — Preceding unsigned comment added by 216.19.115.116 ( talk) 18:19, 3 December 2012 (UTC)
The International Standard IEC60050 for the naming of electrotechnical components only accepts the names "photocoupler" and "optocoupler". Is there a reason why the article name is non standard? -- 91.15.67.235 ( talk) 09:05, 24 August 2013 (UTC)
The result of the move request was: no consensus with no prejudice for a new discussion to be started for the " Optoisolator" alternative. (non-admin closure) Steel1943 ( talk) 23:08, 25 May 2016 (UTC)
Opto-isolator → Optocoupler – Most, if not all, manufacturers refer to these devices as Optocouplers. It is true that some also give opto-isolator as an alternative name. The primary function of the device is to provide signal coupling by optical means. The device has a valuable secondary chartacteristic of providing electrical isolation by a dielectic barrier. Constant314 ( talk) 16:17, 30 April 2016 (UTC) --Relisted. George Ho ( talk) 06:11, 8 May 2016 (UTC)
Are we sure "dielectric" is the right word for the bit in the middle of an optoisolator? A dielectric is an insulator that can be polarised. This is surely not necessary in an opto, it only needs to be an insulator (and transparent!). Are dielectrics used in real-life optos, if they are, why? Is it a necessary property? Couldn't a theoretical opto be built that meets all the specifications, using a non-dielectric insulator? Depending on this, wouldn't "insulator" be a better word? It'd also be advantageous to beginners in electronics, who might not know what a dielectric is. After all, someone experienced in electronics wouldn't need to look up what an opto is!
84.67.73.190 ( talk) 05:03, 19 November 2020 (UTC)