Bipolar Transistors for Audio
George M. Middius wrote:
Poopie tries the Kroogerian "selective editing" ploy.
Donkey brayed:
Face facts, Witless -- the Krooborg stepped in the doo-doo again, and now
it's getting its comeuppance.
No, Arny was actually totally correct and John Atkinson has merely introduced
a red herring.
That's one possibility.
I'm ... entirely brain dead...
That's the first step toward solving your problem, Donkey.
I hate to interrupt this fine flame war :-) But back in the early
70's, table radios made the transision from the "All American 5ive" tube
circuit to a solid state circuit that used a high voltage bipolar
transistor and output transformer for the audio output. Looking at the
collector side of things, it behaved like a pentode. Look at the curves
of a vacuum tube pentode, and then a bipolar transistor with respect to
output current. The inputs are different (voltage vs current) but if
you ignore that, they look pretty similar. So it should be possible to
build a SS amp that sounds like a pentode amp. But that's not triode
sound...
But pentode curves are significantly different from triode curves, and
triodes tend to be many tube fans' favorite device. And it's not easy
to get a transistor to act like a triode.
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