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Last Post by Doz 6 years ago
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 Doz
(@doz)
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Saw this tiny tube on eBay, and purchased it on a whim, as you do. Apparently a 4 volt heater. Can anyone identify the type?

image
image
image
 
Posted : 06/11/2019 12:11 pm
Marconi_MPT4, Marconi_MPT4 and Marconi_MPT4 reacted
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Mystery CRT
 Doz
(@doz)
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I think I've answered my own question ..

 

VCR522?

 
Posted : 06/11/2019 12:35 pm
 Marconi_MPT4
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Appears that VCR522 is equivalent to CV1522 and all information suggest it was made by GEC with commercial type designation E4103/B/4.

It might be worth checking these links:

https://www.valvecollector.uk/cv1522.htm

https://frank.pocnet.net/other/ServiceTypes/cv4-1/CV1522.pdf

Also have brief data for GEC E4103/B/4 if required.

This tube has a green screen type B which has 100ms persistence .  Va1,a3 absolute maximum is 1kV

Rich

 
Posted : 06/11/2019 2:00 pm
 Cathovisor
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Was this the tube in the GEC Miniscope?

 
Posted : 06/11/2019 2:50 pm
 turretslug
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Now that magic eyes are increasingly rare and expensive, you could feed one set of plates with 50Hz to generate a line in one plane and  the other set with AGC to deflect it ? 

 
Posted : 06/11/2019 3:04 pm
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 crustytv
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Posted by: @cathovisor

Was this the tube in the GEC Miniscope?

Indeed, GEC used their own 1 ½ " CRT an E-4103-B-4 as shown below, perhaps the tube Andy has here is an equivalent?

gecminiscp
 
Posted : 06/11/2019 3:34 pm
 Doz
(@doz)
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Posted by: @crustytv
Posted by: @cathovisor

Was this the tube in the GEC Miniscope?

Indeed, GEC used their own 1 ½ " CRT an E-4103-B-4 as shown below, perhaps the tube Andy has here is an equivalent?

The data would suggest that. I'll see if I can get it to light at some point

 

 
Posted : 06/11/2019 3:41 pm
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