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-   -   How to build a transconductance tester for small driver tubes? (http://www.diyaudio.com/forums/tubes-valves/227549-how-build-transconductance-tester-small-driver-tubes.html)

cotdt 11th January 2013 05:35 PM

How to build a transconductance tester for small driver tubes?
 
I was wondering if I can convert one of my amps into a tube tester for small driver tubes. Can anyone point me in the right direction?

kevinkr 11th January 2013 05:41 PM

Take a look at this design.. I'm planning on getting one in the near future if the software is compatible with at least one of the windoz boxes I have on hand..

Here: The uTracer, a miniature Tube Curve Tracer / Tester.

cotdt 11th January 2013 05:42 PM

Whoa, that is cool! Thanks for the info!

molekuul 11th January 2013 08:47 PM

Quote:

Originally Posted by kevinkr (Post 3321370)
Take a look at this design.. I'm planning on getting one in the near future if the software is compatible with at least one of the windoz boxes I have on hand..

Here: The uTracer, a miniature Tube Curve Tracer / Tester.

The software is compatible with windows xp, and windows 7, and I think also windows vista. I didn't test on windows 8. You do need a serial port, but you can also use an usb to serial convertor, see the text on the website.

Merlinb 11th January 2013 09:03 PM

I think this is about as simple as they come:
The Valve Wizard

cotdt 13th January 2013 02:06 AM

Awesome awesome.

One thing I wonder is if I can lower the plate resistance of a 26 at higher current for an all-DHT project. The datasheets don't run the current very high.


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