From: "Steve Andrew"
References: <email@example.com> <firstname.lastname@example.org> <7a9M9.6086$jM5.email@example.com>
Subject: Re: Audio noise in diff amps
X-Newsreader: Microsoft Outlook Express 5.00.2615.200
Date: Thu, 19 Dec 2002 11:07:13 GMT
NNTP-Posting-Date: Thu, 19 Dec 2002 22:07:13 EST
Organization: BigPond Internet Services (http://www.bigpond.net.au)
Don Pearce wrote:
> On Thu, 19 Dec 2002 12:32:44 +1100, "Phil Allison"
>> "Don Pearce" wrote in message
>>> On Thu, 19 Dec 2002 09:37:08 +1100, "Phil Allison"
>>>>> You have a voltage across a resistor, but to calculate the power,
>>>>> you forget what value the resistor is, and simply choose a
>>>>> different value
>>>>> - presumably on a whim, or in this case on the basis of a number
>>>>> you found in a multimeter.
>>>> ** Huh - "power" was never in the game.
>>> I think this sums up all we need to know about you. This lie after
>>> you posted:
>> ** You are one ignorant sod Mr Pearce.
>> It is smug pommies like you that make us Aussies hate
>> you all so much.
>>> ** The noise from a 22 kohm resistor in the audio band is about
>>> 2.4 uV rms or -110 dbm.
>>> .............. Phil
>>> So have I got it right, Phil? Are you a liar, or simply too
>>> incompetent to know that -110 dBm is a power? I will let you choose.
>> ** In the world of audio, Mr Pearce, "dBm" may or may not be
>> true power. It commonly refers to the reference level of 1mW at 600
>> ohms or
>> 0.775 volts as was clearly the case here.
> When you find yourself in a hole that is getting deeper, the rule is
> "STOP DIGGING".
> If you are working in an audio system which has a 600 ohm impedance,
> and hence can permit such a short cut, then you don't have a 22000
> resistor to get noise from - you have 22000 in parallel with 600 ohms
> which will have a much lower noise voltage.
> You keep wriggling, and introducing new ways in which you could have
> fouled up, and now you have another choice. Did you get the resistance
> wrong, the power wrong or what?
>> You really shouldn't let Usenet archive your posts - they will always
>>> come back and bite.
>> ** It is your idiot posts that are biting you here Mr Pearce.
>> It is your pig arrogance that is your downfall.
>> It is, however, your pommy smugness that most unbearable.
>> .......................... Phil
> Now we get to the truth at last. It wasn't that I was right that hurt
> you, the problem was that I am English.
> That makes you a racist as well as a liar. You just go on getting more
> attractive with every post, Phil.
You are wasting your time trying to argue with Phil. He is well known in
aus.electronics for his
I-must-win-the-argument-and-have-the-last-word-at-all-costs attitude ,
moving the goalposts whenever required. When all else fails, he will resort
to personal and racist abuse. A typical example directed at myself in a
> ** Pommy autistic scum are everywhere.
> The UK gene pool makes sure of that.
You will find that Phil is a self-styled expert in everything.
I am an ex Pom, having been resident in Australia for the past 14 years. I
am happy to say that Phil does not represent the average Australian's
viewpoint of Poms. On the contrary, they are an easy-going and friendly
bunch of people. There is some friendly rivalry against The Old Enemy,
particularly when it involves cricket, but it's all done in fun.
Unfortunately, people like Phil help to reinforce the incorrect perception
that Australian are a bunch of uncouth, loudmouthed arseholes. He may well
be, but he is in a very small minority.
As the saying goes: "Don't wrestle with a pig, you get covered in mud, and
the pig likes it".