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Self-made oscilloscope misses 3 tubes – wich ones?

 
(@homeforobsoletetechnology)
New Member

Hello Forum, 

a friend of mine left this world not so long ago and I got a small oscilloscope. I think the cause why I want it to be working is obvious. Howevery, I have no schematic at all and all three tubes are missing. 

I recreated most of the schematics manually and I measured every single voltage at the 3 sockets. Maybe someone out there is able to find out wich tubes used to be in there?

While measuring, something strange happened: I exidentally shortet 2 pins. Before that, there was just a dot on the screen. Now, there is a line though a few “parts” a missing. 


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Topic starter Posted : 19/02/2024 11:31 am
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(@homeforobsoletetechnology)
New Member

This is the schematic: https://www.mediafire.com/folder/sx4v9mvdb3iyh/oscilloscope (I don’t know how to add files. If this is not the appropiate way of doing it, please let me know.)

Since I’m from german, here are the translations:

Helligkeit = Brightness

Schärfe = Sharpness

Schirmung für Oszi-Röhre = Shielding for oscilloscope tube

Zeitablenkung = time deflection (I don’t know what that is, but this is what it says on the front.)

fein = fine

Thanks a lot!


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Topic starter Posted : 19/02/2024 11:40 am
Larry_N7LUF
(@larry_n7luf)
Honorable Member

Posted by: @homeforobsoletetechnology

I don’t know how to add files. If this is not the appropiate way of doing it, please let me know.)

I am finding links to my Google drive seem to work for me.
I sure there are other storage that you could share links.

 


Larry – N7LUF

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Posted : 19/02/2024 11:52 am
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