On Oct 26, 12:29 am, Andre Jute wrote:
IN RESPONSE TO THIS
You really have to wonder.
Here we have three self-proclaimed engineers claiming that Class A is
an amplification Class in which "the output device(s)never cease
conducting under any signal condition."
The three "engineers" in question are Graham "Poopie" Stevenson, Don
"Bluster" Pearce and Arny "I spoke in error" Krueger. Apparently they
are perfectly unable to understand, after they have been told so a
handful of times already, that "any signal condition" includes
overdrive which turns even the correct part of the definition into
absurd nonsense.
Here's the sequence of their errors, with a small sample of their
abuse liberally spattered over the newsgroups:
First Andre Jute, he of the saintly patience, pointed out that Poopie
Stevenson made a silly error:
Poopie's absurd redefinition of Class A as
a Class in which "the output device(s)never cease conducting *under
any signal condition*," (emphasis added). It's ludicrous.
Then Poopie Stevenson confirmed:
It's actually the only accurate definition.
And Arny "I spoke in error" Krueger agreed without any qualification:
Agreed.
Then Andre Jute, he of the saintly patience even with fools, pointed
out that the two parts of redefinition are mutually exclusive:
Any amp can be driven out of class by excessive signal voltage.
Which Poopie tried to blow away with poor-quality smoke:
Overdriving to cut-off is merely gross abuse and a complete red herring /
irrelevance.
Fully supported of course by his yes-man, Arny "I spoke in error"
Krueger:
Agreed. Jute seems to be addicted to excluded-middle arguments. Kick out
those and the straw men, and he's hardly have anything to say. ;-)
Now Don Pearce tries to bluster the argument out with an obvious lie:
Can you overdrive a class A amp to cutoff? In my experience what
happens when you overdrive a class A amp is that one device saturates,
and the other sticks with its normal bias condition. There is no
circumstance in which I have ever managed to put a class A amplifier
output device into cutoff.
d
Of course, it is irrelevant (perhaps even commendable) that Don Pearce
lives such a dull and unadventurous life that he has never overdriven
a Class A amp; perhaps he doesn't own a Class A amp; on the evidence
in this thread he doesn't even know what a Class A amp is. What
matters is that Don Pearce, like Arny Krueger, supports Poopie
Stevenson's absurd definition of Class A operation as 360 degrees of
conduction "under any signal condition".
How can any properly educated engineer not know that the signal in an
amplifier class is by necessity limited?
It is difficult not to conclude that these three clowns, Stevenson,
Krueger and Pearce, are either not engineers, or were not properly
educated, or are too old and fat and slack to remember the basics they
were taught.
I have on previous occasions demonstrated what Poopie Stevenson's
claim of a University of London degree actually means: not very much,
as he got his degree from a jumped-up polytechnic (a British version
of the soldering schools Ludwig is addicted to) forced onto UL by a
socialist government trying to save a buck. Others have noted that
Krueger was "educated" at a community college I have never even heard
of. Who knows where Pearce was so misshapen as to believe that it
doesn't matter how much signal voltage you use in an amplifier?
Poopie Stevenson, Bluster Pearce and Erroneous Krueger are, in
engineering terms, ignorant and abusive clowns "under any signal
condition".
Andre Jute
The trouble with most people is not what they don't know, but what
they know for certain that isn't true. ---Mark Twain
IN RESPONSE TO THE ABOVE REASONE INDICTMENT, ERRONEOUS KRUEGER TELLS
US THIS:
On Oct 25, 10:31 am, "Arny Krueger" wrote:
"Andre Jute" wrote in message
roups.com...
Others have noted that
Krueger was "educated" at a community college I have never even heard of.
Just goes to show that Jute is so stupid and arrogant that he is willing to
go on record agreeing with the sockpuppet known as George Middius. AFAIK,
the lie that I ever attended a community college is a lie that was
originated on Usenet by the Middiot.
You're tight, Krueger, I merely reported what others said about you.
I graduated from Oakland University
Never heard of that one either. The rest of your post is poor-quality
smoke to avoid the main issue:
So, Arny "I spoke in error" Krueger, where is your excuse for claiming
that Class A must hold true "under any condition of signal"?
which has never been a community
college. It is the only degree-granting institution of higher education that
I've ever attended. True, there is an educational resource named Oakland
Community College, but it is a completely different institution.
The rest of Jute's post is about as truthful as this false claim.
Do you, Arny "I spoke in error" Krueger, deny that you agreed with
Poopie Stevenson that Class A must hold true "under any condition of
signal"?
Unsigned out of contempt for a liar and a fool
All hail the marketer cheap-Jute. When are you going to get back to
the definition of AB? back to claiming AB amps workin Class A for some
fraction of its rated power? good grief Chuck, go wait for the great
pumpkin.
So you run your amps with clipping inducing signal? Signal is only of
concern below the level required to deliver max power. What is the
value of discussing signal that overdrives the amp? Turn the volume
down fooool, or build a bigger amp.
Class A means the finals are at a minimum idling at half the current
they'll conduct at full power. It doesn't matter if the design can
deal with grid current or not. If it can, then of course power will be
higher than if it couldn't. Why would you worry about an AB amp's
behaviour under signal higher than required to deliver max
power( unless you're discussing the overload behaviour perhaps ). You
know what was meant, and at worst the idea was mis-spoken. Get a grip!
Cloud the issue, split
The part of the an AB amp's finals conducting together is not class A.
Your agreement isn't required, just like we don't need your approval
for the Sun to rise the next morning. It will rise regardless...
cheers,
Douglas