Phosphor: Difference between revisions

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CRT phosphors were standardized beginning around World War II and designated by the letter "P" followed by a number.
CRT phosphors were standardized beginning around World War II and designated by the letter "P" followed by a number.
In most early scopes, the standard phosphor was P-2. By the late 1950s, P-31 became dominant.  For scopes primarily used with photographic recording, the blue P-11 phosphor was common.
In most early scopes, the standard phosphor was P-2. By the late 1950s, P-31 became dominant in general-purpose applications, while the blue P-11 phosphor was common for scopes primarily used with photographic recording.


The choice of phosphor for a CRT is based on the intended application of the instrument.  The phosphor affects:
The choice of phosphor for a CRT is based on the intended application of the instrument.  The phosphor affects:
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* resistance to burns
* resistance to burns


== Links ==
* [https://youtu.be/FCAKL-4NTrA Visual demonstration of different phosphor types' behavior] @ YouTube
* [http://www.bunkerofdoom.com/tubes/crt/crt_phosphor_research.pdf Table of CRT Phosphors]
* [[Media:062-0852-01.pdf|Tektronix Circuit Concepts: Cathode Ray Tubes]] (see chapters 9 through 16)
* [[Media:070-1011-03.pdf|C50 series camera manual, pages 3-1 to 3-7]] - detailed data on P1, P2, P7, P11 and P31 phosphors
==Phosphor type data==
[[File:Phosphor summary table.jpg|750px]]
[[File:Phosphor summary table.jpg|750px]]


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[[File:Phosphor decay table rev a 1966.jpg|750px]]
[[File:Phosphor decay table rev a 1966.jpg|750px]]


== Further reading ==
* http://www.bunkerofdoom.com/tubes/crt/crt_phosphor_research.pdf
* [http://w140.com/062-0852-01_Cathode-Ray_Tubes_Jul69.pdf Tektronix Circuit Concepts: Cathode Ray Tubes (see chapters 9 through 16)]
* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_C-50_to_C-53_Cameras_Tek_C-50_to_C-53_Camera_Systems_Service_Manual.pdf C50 series camera manual, pages 3-1 to 3-7] - detailed data on P1, P2, P7, P11 and P31 phosphors




[[Category:Cathode ray tubes]]
[[Category:Cathode ray tubes]]

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