On Oct 28, 4:58 pm, "Chronic Philharmonic"
wrote:
But all right, Mijnheer van Gennip, you want to be a slim jannie --and
in English too! So show us how you would design an amplfier either
Class A or with substantial Class A output (i.e. Class AB) in which
"the output device(s)never cease conducting under any signal
condition". Note the important qualification "under any signal
condition". That means exactly what it says in plain English: you
design the amplifier, I choose the signal level to be vastly larger
than the specified bias, then you prove it still operates in Class A.

So, drive the amplifier outside its design parameters? It sounds like you
are parsing semantics here. In a formal debate, one might lose points for
failing to say "the output device(s)never cease conducting under any signal
condition /within its rated parameters/". But in a newsgroup, it isn't often
clear when the formal rules are switched on or off. It seems people
arbitrarily like to switch them on and off for their own benefit.

That, dear Chronic Philharmonic (nice monicker!), is precisely what I
am complaining about.

Follow the steps:

A class A amplifier is one in which the devices never cease
conducting, right. We all know it means while the signal is limited so
as not to drive it out of class.

Graham "Poopie" Stevenson claimed, in order to win an argument against
someone he hates for often exposing his ignorance, that a Class A
amplifier is on in which "the device(s) never cease conducting under
any signal condition." The words "under any singal condition" clearly
negate the prior part of the definition, because any signal condition
must by definition include overload that will drive the amp to
device(s) to cutoff. Arny "Slapdash" Krueger and Don "Bluster" Pearce
explicitly supported Poopie's gross misdefinition for personl reasons
of their own.

A hundred acrimonious messages later, Poopie added a phrase to the
effect of "under any signal condition that will not drive the amp
outside Class A conditions". That whole phrase is then tautological
because the latter half merely cancels out the erroneous first half.

We were back to where decent engineers would have started: "A class A
amplifier is one in which the devices never cease conducting." That
already includes limiting the signal so it cannot be driven out of
class.

So, all of this was an attempt by Poopie Stevenson, Slapdash Krueger
and Bluster Pearce to win an argument by perverting a scientific
definition for their own petty personal reasons.

As I say, you got it in one, except that you missed out on the
despicable personal reasons driving the assault on scientific decency
by these clowns Poopie, Slapdash and Bluster.

Andre Jute
Habit is the nursery of errors. -- Victor Hugo