Re: The "Sussex" Homebrew Valve Tester.
Hi,
That tube tester is an amazing project !
I have two question, please forgive me if it has already been answered (I didn't go through the whole 60 pages thread and didn't find a "search within thread" function) :
- is the 300V/95mA plate supply high enough to correctly test high voltage tubes like 6550, that are generally used at twice that voltage (600V is pretty common in big bass amps like Ampegs and so). I guess some tubes pass at 300V but fail at 600V...
- can someone explain why there's this note at the trafo specs : "not for burning in tubes, duty cycle limited to approx 20%". If the trafo is solid enough to power the tube then it should be solid enough to let the tube like this a few hour, isn't it ? I might be missing something here.
Thanx in advance for your help, and for sharing this great project !
Best regards.
Eric
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