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Old 26th September 2008, 10:56 AM   #11
SY is offline SY  United States
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Since power triodes are sooo expensive, why not use miniture 9 pin tubes?
Only the fashionable ones are expensive. Quality miniature tubes are also expensive. You can have 10W per tube of triode dissipation for less than $5 per if you choose something made for tv.
“Instead of Rational Law, objective truths perceptible to any who will undergo the necessary intellectual discipline, Knowledge will degenerate into a riot of subjective visions. . ." - Auden
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Old 26th September 2008, 01:27 PM   #12
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Originally posted by kenpeter

What happens to Triodlington if grid ever conducts A2?

I don't know and I am not interested in A2, sorry.

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Old 26th September 2008, 03:33 PM   #13
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Wasn't meant to imply that A2 would ever be an intentional
long term operating condition. With a Triodlington there is
plenty more than enough class A power already.

Though I guess with me you can't make any assumptions
Probably in the top 10 most likely to try something weird.

I was only looking to see if an accidental hard A2 transient
might make it latch or otherwise go bananas? In your specific
case, it certainly seems it would not.

The parts you selected look very hard to kill. Its still difficult
to believe something so simple needs no extra compensation.
The deeper I research to find the flaw, there just isn't any.
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Old 27th September 2008, 07:04 PM   #14
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A tube like 6N6P can take 4W and I have seen aplications for both SE and PP-amps. I also have a schematic for a SE-amp using parallelled ECC88. I find the idea thrilling but still, there are tubes that do the work without the need to connect them in parallell.

I am building a 6N6P-PP amp (4W).
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