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In Reply to: RE: need some advice ... posted by vinnie2 on July 31, 2017 at 16:00:48
I see now that the problem was in the layout, but why is it they show different values for the two triodes in the tube manual if they are both the same? They show a unit one and a unit 2. That is what made me think that one side must function as a driver and the other as an amplifier.
I guess the first clue is they show the Class A info as per each unit, but why is the other info different?
Edits: 08/01/17 08/01/17 08/02/17Follow Ups:
To add to what CB said below, the 6dj8 was developed for RF work with the two triodes in cascode (one triode on top of the other).That's why the data sheet refers to each of the two triodes the way it does.
That has nothing to do with us using the 6dj8 as a dual triode for audio work.
Just like with a 12ax7, each triode in a 6dj8 is the same.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 08/01/17
Now I understand. That clears up the confusion for me and it all makes sense now. Each day I learn something new. My thanks to all.
Edits: 08/02/17
Like Tre mentioned, the datasheet gives various capacitances for each half separately, which isn't applicable to what you're doing. For audio frequency applications, each triode inside the bottle is identical.
Thanks per above.
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