Let's Get Technical > All Things Tube

Valve/Tube tester

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Rusty:
Hey my fellow ADAer's.

I have been supplied with the main components for another project that I'm going to build soon. It's the "Sussex" valve/tube tester designed by the great late Mike Rowe over at UK Vintage Radio and enhanced by many of the brilliant engineers over there who are so good to everyone. A real nice forum and a privilege to be part of I must say.  :)

It kind of borrows a little from the famous AVO CT160 and is a seriously brilliant affordable project that has so much support from the guys over there. I already got the PCB and custom made XFRMR, I'm going for it people.

I'll keep you's posted on the progress ok.   :)

Thanks for reading.
 
http://www.vintage-radio.net/forum/showthread.php?t=48853

rnolan:
Hey Go Rusty  :thumb-up: Looking forward to the posts my friend.

El Chiguete:
So what exactly does it test?

rnolan:
Tubes I suspect LoL sorry El couldn't resist  ;)
So my understanding of tube testing thingies is they use various known and repeatable test signals to check the tubes characteristics like:
Overall gain for matched pair, quads or just high gain
Gain from each triode (of twin triode tubes e.g. all the 12A?7s) for matched triodes
Current
Stability
microphonics ? not sure on this one, maybe they just tap them with a spoon ??
noise (signal to noise ratio)
Possibly:
attack transients
Anyway my guess off the top of my head

 

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