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From: David Eather on 17 May 2010 10:43
Recently I disagreed with Phill Allison over a class A amplifier and
then hurled abuse at him before I checked the information.

Phill was correct and I apologise for the undeserved abuse.

David Eather
From: Phil Allison on 17 May 2010 22:45

"David Eather"

> Recently I disagreed with Phill Allison over a class A amplifier and then
> hurled abuse at him before I checked the information.

** In fact David quoted both Wiki and electronics text books on the subject
of class A efficiency.

Still he came up wrong by looking at irrelevant info.


> Phill was correct and I apologise for the undeserved abuse.


** No apologies from me for the well deserved bollocking you got.

BTWs

1. The debate was on "sci.electronics.basics" on Jan 27 & 28 this year
under the title: " Discussing audio amplifier design -- BJT, discrete " -
so David ought to post his apology over there.

2. The original disputed point was that a class A power amp has a possible
max ( full output, sine wave) efficiency of 50%. The figure of 50% applies
to class A " push pull" output stages AND singled ended class A stages
that use either choke or transformer coupling to the load.

3. My name is spelt as you see below.


..... Phil




From: David Eather on 17 May 2010 23:56
On 18/05/2010 12:45 PM, Phil Allison wrote:
> "David Eather"
>
>> Recently I disagreed with Phill Allison over a class A amplifier and then
>> hurled abuse at him before I checked the information.
>
> ** In fact David quoted both Wiki and electronics text books on the subject
> of class A efficiency.
>
> Still he came up wrong by looking at irrelevant info.
>
>
>> Phill was correct and I apologise for the undeserved abuse.
>
>
> ** No apologies from me for the well deserved bollocking you got.

Yep.

>
> BTWs
>
> 1. The debate was on "sci.electronics.basics" on Jan 27& 28 this year
> under the title: " Discussing audio amplifier design -- BJT, discrete " -
> so David ought to post his apology over there.
>
> 2. The original disputed point was that a class A power amp has a possible
> max ( full output, sine wave) efficiency of 50%. The figure of 50% applies
> to class A " push pull" output stages AND singled ended class A stages
> that use either choke or transformer coupling to the load.
>
> 3. My name is spelt as you see below.
>
>

Noted.


> .... Phil
>


>
>
>

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