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Old 5th November 2021 | Show parent
 
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Quote:
Originally Posted by kludgeaudio ➡️
Yes, and this is different than a cascode arrangement it's true. But you're still back to two tubes for the stage then, one being the amplifier and the other being the current source. (Which is why we have dual tubes like the 12AX7s and even compactrons.)
--scott

I was thinking about using twin triodes as two amplifying stages and use another active device to form current source. Need much higher B+ voltage if tubes are used to form current source. Solid-state devices work great as current source, a hint.