Poopie Stevenson aka Eeyore
wrote:
John Byrns wrote:
Andre Jute wrote:

Historically, the original purpose of Class AB was to annihilate the
second harmonic which before made up such a very large part of the
THD, while still allowing beam tubes and pentodes to give much larger
power than available before.

Andre, why was Class AB necessary to annihilate the second harmonic,
didn't Push Pull operation already annihilate the second harmonic
irrespective of the class of operation?

Yes, you are right. It does.

The SOLE purpose of AB is to produce larger power outputs using the same tubes.

Now this poor dumb slow learner Poopie Stevenson, an embarrassment to
everyone who comes into contact with him, claims to know more than the
RDH4! Yo, Poopie, in the RDH4 (Newnes 1997) on p 545 we find this
nugget of authoritative information by F. Langford-Smith B.Sc. B.E.
himself:

"Class AB operation indicates overbiased conditions, and is used only
in push-pull to balance out the even harmonics."

You're a fool, Poopie. You should have taken a tip from John Byrns and
asked a question rather than made a statement you cannot back up.

The dissipation in the output tubes is very considerably lower than that in
Class A.

You're blowing smoke out of your arse, Poopie. I'm clearly talking
about output power but you try to muddy the water with "dissipation in
the output tubes". You're not only a clown, you're a transparent
clown.

Or are you perhaps, in line with the ignorance generally displayed in
your posting history, trying to claim that more output power is
available from Class A than from Class AB? That would be a new nadir
of stupidity even for a man who just claimed that Class A devices
should conduct 360 degrees "under any signal condition".

Graham

Andre Jute
The trouble with Poopie Stevenson is not what he doesn't know, but
what he knows for certain that isn't true. --- with apologies to Mark
Twain