With 6 videos leading up to this final result, I decided to do one long video describing the various stages of the project, to spare you the pain of having to see them all.
The project started with a simple suggestion that I would consider designing a tube tester for the tubes that are most common in the German tube radios that I restore. That gained quite a body of support, and so I set off to try it.
Here is the result after a few design changes, and with some options having clearly pleased some, while not all.
This project is meant to be an ongoing prototype, so I am confident that it will be revisited in the future.

You can now support the channel:
[ Ссылка ]
[ Ссылка ]

IF YOU WANT TO BUILD IT YOURSELF ...

Below are various links to pertinent information, including a Google Drive folder that has all the info on the project in support of the video series. Feel free to download it and use it for your personal builds, but please note that I won't be able to provide too much further help with building your project, as time is always scarce.
This project is definitely not for beginners, so only embark on it if you are confident that you can do so safely. If you do, you are obviously doing so at your own risk.
The PCB's can be ordered directly from PCBWay via the link below. If you prefer, you can use the Gerber files included in the info folder to produce your PCB's elsewhere.

IMPORTANT NOTICE: The initial schematic showed Q3 as a BC547, but it is in fact a 2N3904. These two transistors have opposite pinouts, so be careful. The PCB is correct for the 2N3904.

Schematics, Gerbers, Funke Tube Cards, and more info:
[ Ссылка ]

Link to Shared Project section on PCBWay's website for this PCB:
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Link to Shared Project section on PCBWay's website for Battery Switcher PCB:
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Tube Cards download:
[ Ссылка ]

Full card summary in text format:
[ Ссылка ]

Meters:
«PeakTech® LDP-135»
[ Ссылка ]


You can now support the channel:
[ Ссылка ]
[ Ссылка ]


______HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM_____
DIY TEST GEAR: The title says it all:
[ Ссылка ]

RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
[ Ссылка ]

HowTo's: Various videos on some simple techniques and projects:
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See also playlists on some other completed restoration projects.

PHILIPS BX750A:
[ Ссылка ]

TELEFUNKEN OPUS 2114:
[ Ссылка ]

SABA UW-175-Z 3D:
[ Ссылка ]

GRUNDIG 1070:
[ Ссылка ]

SCHAUB-LORENZ GOLDY 58 type 3020:
[ Ссылка ]

BUSH VHF64:
[ Ссылка ]

GRUNDIG 3060A:
[ Ссылка ]

TELEFUNKEN OPERETTE 8:
[ Ссылка ]

GRAETZ SUPER 171W:
[ Ссылка ]

LOEWE-OPTA MAGNET 3737W:
[ Ссылка ]

BRAUN ATELIER 3:
[ Ссылка ]

LOEWE-OPTA TRUXA STEREO 4741W:
[ Ссылка ]

GRAETZ COMEDIA 616:
[ Ссылка ]

SABA FREIBURG W2:
[ Ссылка ]

GRAETZ MUSICA 4R417:
[ Ссылка ]


You may also be interested in ...

CAPACITOR LEAKAGE TESTER:
[ Ссылка ]

#tuberadios #radiorestoration

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