Getting matching transformer from telephone

[Phil Allison]

"Archimedes'= CRIMINAL PSYCHOPATH "


** Report this FUCKING SCUMBAG to his ISP

NOW !!!!!!!!!!!!!!!!


Get the STINKING TROLLING PIG

fucked off usenet for ever !!




...... Phil

 

[Archimedes' Lever]

On Sat, 03 Jan 2009 12:55:01 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

"Floyd L. Davidson" wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:
"Floyd L. Davidson" wrote:

"Pulling the line low"???? Giggle snort,
cough and laugh...

A: OFF HOOK you twit.

Off hook is a loop *current* condition.

WOW. I'd never have guessed !


B: the DC resistance of the transformer primary may cause the phone to stop
working by lowering the line voltage too much.

Typically a split winding is used, with a mid-point
capacitor to block DC current.

What a load of Bollocks !

Transformers are neither needed nor used any more.

Graham

You are probably simply too fucking stupid to recognize the part
package, dumb donkey. They are less than 1 x 1 x 2 cm these days, but I
wouldn't expect a dipshit like you to know that fact.

 

[Eeyore]

Stuart wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

impedence and Ribbons can be as low as 50 Ohm but otherwise......

Ribbons are FAR lower. Maybe 50 ohms AFTER the transformer !

We *were* talking about the impedance as presented to to the input of a
mixer or whatever

Were we ?

, i.e., yes, after the internal transformer,

Most dynamics don't even have an internal transformer you twat.

not the impedance of the ribbon itself. The once very widely used Reslo RB/L
series was specified as 30-50 ohm

I know. I have 2.

And Pin 1 on an XLR is ALWAYS the cable shield.

Did it suggest anything other than that in the given description?

YES.

It may also be GROUND - but that's another story.

It is always grounded, directly or indirectly, otherwise the screen fails
to be effective.

Completely UNTRUE. Ever heard of battery operated equipment ?

It certainly isn't used to provide phantom power under ANY circumstances.

So how does phantom power work then? You stick a voltage down the signal
leads in parallel and the the return is via what?

Pin 1 is the RETURN path, not the means by which voltage is applied.

And the last time I came across a centre tapped transformer in pro-audio
was 35 years ago.

If you were even born more than 35 years ago how come you know so little?

And you work in WHICH industry ? Got a CV ?

Why do you think people such as www.Lundahl.se and others are still
manufacturing and selling them, even introducing new designs.

They have a niche market. I have used Lundahl and Sowter myself where galvanic
isolation or outdated design requires the use of a transformer.

At a one-off price of around 20-30 quid they must be manufacturing them in
"quantity"

I can get an entire small 6 channel mixer of surprisingly good quality built in
China for that much.

R.S. Components are a hard-headed, very commercially minded
electrical/electronics distributor, who only stock stuff they can shift in
quantity, yet they still list a centre-tapped primary, microphone
transformer

In an article in Electronics World April 1991, Douglas Self of Soundcraft
stated "It is now rare to use input transformers...." It is clear,
therefore, that they were still being used, even if only in specialist
applications. That is a bare 18 years ago.

No-one was using them in quantity after about 1980.

Doug Self is a Self promoting fathead.

Graham

 

[Archimedes' Lever]

On Sat, 03 Jan 2009 12:56:02 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

"Floyd L. Davidson" wrote:

It has worked for roughly 100 years

Is that how long you've been practicing telephony ?

Graham

Compared to you, it would be a number ten times greater than that
figure.

Dumb donkey knowledge = 0.1%

Floyd knowledge = 100%

Dumb donkey grasp = even less.

You're not doing so well, dumb donkey.

 

[Archimedes' Lever]

On Sat, 03 Jan 2009 12:58:48 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

"Floyd L. Davidson" wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

Look, I've designed line interfaces FFS. For Xerox. I've already
mentioned it once.

You can say anything you like, but when you make up all
the ridiculous garbage you are posting to this thread
there is little doubt that you haven't got even the
faintest clue how telecommuncations equipment works.

Want to to see the schematics ? I'm sure I still have them here
somewhere.

Graham

And that fact STILL does not negate the fact that you have no grasp of
it.

More proof, donktard! You can actually have a schematic available, and
spew horseshit without even referring to it. You can actually have it,
and have no concept of how to interpret it as well. You're a real
wiener, donktard.

You really are one dumb donkey.

 

[Archimedes' Lever]

On Sat, 03 Jan 2009 12:59:13 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

"Floyd L. Davidson" wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:
Phil Allison wrote:

plus cap couple the input side to stop pulling the line low.

Damn right ! Not ONE of these 'phone experts' has mentioned that.

BS. I had previously discussed it in detail.

You are full of BS.

You should at least read the entire thread before you make stupid
claims, dumb donkey.

That's right... you were too stupid to REFER to the schematic you
claim to have as well.

 

[Archimedes' Lever]

On Sat, 03 Jan 2009 13:01:32 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Archimedes' Lever wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

You are DimBulb and I claim my Ł1000.

No, I am your superior, and there is nothing that you can do about it,
amp boy.

Proof positive. How's your DSP btw ? Ultra-low noise analogue circuitry,
interfacing one to the other etc ?

Graham

I use dual Sharcs. You use NOTHING, because you are all talk...

....and lame ebay auctions for your pathetic gear by folks that do not
want your pathetic gear any more.

How many do you own, pathetic donkey?

Bwuahahahahahahahaha!

 

[Stuart]

In article <495EF5C0.E2464EA4@hotmail.com>,
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

impedence and Ribbons can be as low as 50 Ohm but otherwise......

Ribbons are FAR lower. Maybe 50 ohms AFTER the transformer !

We *were* talking about the impedance as presented to to the input of a
mixer or whatever, i.e., yes, after the internal transformer, not the
impedance of the ribbon itself. The once very widely used Reslo RB/L
series was specified as 30-50 ohm

And Pin 1 on an XLR is ALWAYS the cable shield.

Did it suggest anything other than that in the given description?

It may also be GROUND - but that's another story.

It is always grounded, directly or indirectly, otherwise the screen fails
to be effective.

It certainly isn't used to provide phantom power under ANY circumstances.

So how does phantom power work then? You stick a voltage down the signal
leads in parallel and the the return is via what?

And the last time I came across a centre tapped transformer in pro-audio
was 35 years ago.

If you were even born more than 35 years ago how come you know so little?

Why do you think people such as www.Lundahl.se and others are still
manufacturing and selling them, even introducing new designs.

At a one-off price of around 20-30 quid they must be manufacturing them in
"quantity"

R.S. Components are a hard-headed, very commercially minded
electrical/electronics distributor, who only stock stuff they can shift in
quantity, yet they still list a centre-tapped primary, microphone
transformer

In an article in Electronics World April 1991, Douglas Self of Soundcraft
stated "It is now rare to use input transformers...." It is clear,
therefore, that they were still being used, even if only in specialist
applications. That is a bare 18 years ago.

--
Stuart Winsor

For Barn dances and folk evenings in the Coventry and Warwickshire area
See: http://www.barndance.org.uk

 

[Archimedes' Lever]

On Sun, 4 Jan 2009 00:09:13 +1100, "Phil Allison"
<philallison@tpg.com.au> wrote:

** More pedantic, pommy fuckwit nonsense.

Screening works even if there is no connection to AC supply ground or
actual ground.

That's a pretty broad statement, you retarded fuck.

The validity of it is only true in a couple of circumstances.

The problem is that you are not a pretty broad.

I'll bet your ass is pretty fucking broad though. Likely four feet
wide! Bwuahahahahahaha!

Nice job of getting it wrong again, though, PhilTard, you sub-human
piece of shit.

 

[Archimedes' Lever]

On Sat, 03 Jan 2009 13:09:38 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

At least we don't kill thousands of our fellow citizens each year with GUNS.

Idiot. A person that is committing a murder is not, nor does he have
"fellow citizens". A criminal is NOT a citizen of a civil society, but I
would not expect a retarded Ally hating dumb fucking sub-human retard
like you to have any grasp of civil behavior.

 

[Eeyore]

tony sayer wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> scribeth thus
"Floyd L. Davidson" wrote:
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:
"Floyd L. Davidson" wrote:

"Pulling the line low"???? Giggle snort,
cough and laugh...

A: OFF HOOK you twit.

Off hook is a loop *current* condition.

WOW. I'd never have guessed !

B: the DC resistance of the transformer primary may cause the phone to stop
working by lowering the line voltage too much.

Typically a split winding is used, with a mid-point
capacitor to block DC current.

What a load of Bollocks !

Transformers are neither needed nor used any more.

Umm... beg to differ .. they are used for 2 and 4 wire analogue or
analogue over digital voice band private circuits...

I thought we were talking POTS ?

Graham

 

[Michael A. Terrell]

Eeyore wrote:

"Michael A. Terrell" wrote:

Here is the donkey's 'Civilized World'

http://www.dailymail.co.uk/news/article-1103843/Boozy-Britains-bloody-New-Year-A-999-seven-seconds-alcohol-induced-mayhem.html

At least we don't kill thousands of our fellow citizens each year with GUNS.

You prefer car bombs.

I'd rather have a bloody nose than be dead from a gunshot thanks, you bunch of criminally retarted cunts. At least it's ONE thing
you lead the world at !

Gun control is for morons and cowards. England is the perfect example
of a nation governed by cowards who are afraid of armed citizens.

--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.

 

[Michael A. Terrell]

Eeyore wrote:

"Howls of derisive laughter"

That is a sign of dementia.


--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.

 

[Eeyore]

"Michael A. Terrell" wrote:

Eeyore wrote:
"Michael A. Terrell" wrote:

Here is the donkey's 'Civilized World'
http://www.dailymail.co.uk/news/article-1103843/Boozy-Britains-bloody-New-Year-A-999-seven-seconds-alcohol-induced-mayhem.html

At least we don't kill thousands of our fellow citizens each year with GUNS.

You prefer car bombs.

And when do you we last had one of those ?

 

[Stuart]

In article <495F65B4.1D0A0950@hotmail.com>,
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

Stuart wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

impedence and Ribbons can be as low as 50 Ohm but otherwise......

Ribbons are FAR lower. Maybe 50 ohms AFTER the transformer !

We *were* talking about the impedance as presented to to the input of a
mixer or whatever

Were we ?

, i.e., yes, after the internal transformer,

Most dynamics don't even have an internal transformer you twat.

Seems to me you can't even follow a simple discussion.

not the impedance of the ribbon itself. The once very widely used
Reslo RB/L series was specified as 30-50 ohm

I know. I have 2.

So have I!

And Pin 1 on an XLR is ALWAYS the cable shield.

Did it suggest anything other than that in the given description?

YES.

Nonsense, learn to read.

If you were even born more than 35 years ago how come you know so
little?

And you work in WHICH industry ? Got a CV ?

Retired and old enough to know a lot more than you do about the history of
audio. Been there, seen it, done it.

In an article in Electronics World April 1991, Douglas Self of
Soundcraft stated "It is now rare to use input transformers...." It
is clear, therefore, that they were still being used, even if only in
specialist applications. That is a bare 18 years ago.

No-one was using them in quantity after about 1980.

Doug Self is a Self promoting fathead.

Don't like evidence that proves you wrong do you?

Abuse is the weapon of the man who knows he has lost the argument.

If people want to learn something, I and others round heare are happy to
teach them but people with your attitude aren't worth bothering with.

I've not yet seen you produce *any* evidence to refute *anything* I've
said round here. When you do I'll apologise if it's appropriate.

--
Stuart Winsor

For Barn dances and folk evenings in the Coventry and Warwickshire area
See: http://www.barndance.org.uk

 

[Stuart]

In article <495F61FE.DEDA7041@hotmail.com>,
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

Stuart wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:
It isn't. Not for about 45 years.

45 years ago it certainly was!

Minority use even then.

Try and think WHY.

Well, lets see now.

Because Graham doesn't like being proved wrong?

Because I didn't spend 20 or more years of my life measuring and testing
audio systems, equipment and GPO lines that were all designed for 600 ohm
characteristic impedance (among other things)?

Because until the 1980s (I think it was) The GPO/BT didn't have a monopoly
on telecommunications, including the distribution of audio down its many
miles of cable? [1] Minority use?

Because the BBC didn't have a number of large and small studio complexes
where 600 ohms was the norm (Not anymore but it was then) for audio?

Because even the most modern audio test equipment doesn't have facilities
for measuring 600 ohm systems? - Oh dear, another wrong answer.

Because this isn't a binary group and I don't have a website on which post
proof positive that you are wrong but would you would ignore anyway?

However, let me try this quote on you. From "Studio engineering for Sound
Broadcasting" - Iliffe - 1955 (that's about 45 years ago) p20:
"The chain incorporates a Post office line and to avoid confusion.......In
the early days most Post office lines were open wire lines and all these
had an impedence of about 600 ohms"

Stuart

[1] Remember, we were discussing the history of why 600 ohms became
the standard impedance for *audio distribution*. Not teleprinters,
telegraph systems or even telephone wiring; or why the microphone input of
a mixer desk is around 2k ohms.

--
Stuart Winsor

For Barn dances and folk evenings in the Coventry and Warwickshire area
See: http://www.barndance.org.uk

 

[tony sayer]

In article <495F7C64.761E9F95@hotmail.com>, Eeyore <rabbitsfriendsandrel
ations@hotmail.com> scribeth thus

tony sayer wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> scribeth thus
"Floyd L. Davidson" wrote:
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:
"Floyd L. Davidson" wrote:

"Pulling the line low"???? Giggle snort,
cough and laugh...

A: OFF HOOK you twit.

Off hook is a loop *current* condition.

WOW. I'd never have guessed !

B: the DC resistance of the transformer primary may cause the phone to
stop
working by lowering the line voltage too much.

Typically a split winding is used, with a mid-point
capacitor to block DC current.

What a load of Bollocks !

Transformers are neither needed nor used any more.

Umm... beg to differ .. they are used for 2 and 4 wire analogue or
analogue over digital voice band private circuits...

I thought we were talking POTS ?

Graham

Yeah .. sounds abaht right;-))...
--
Tony Sayer

 

[tony sayer]

In article <5017f61a8bSpambin@argonet.co.uk>, Stuart
<Spambin@argonet.co.uk> scribeth thus

In article <495F61FE.DEDA7041@hotmail.com>,
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:
Because I didn't spend 20 or more years of my life measuring and testing
audio systems, equipment and GPO lines that were all designed for 600 ohm
characteristic impedance (among other things)?


Because until the 1980s (I think it was) The GPO/BT didn't have a monopoly
on telecommunications,

Kingston telecoms anyone..

....alright not that much of the UK!....

--
Tony Sayer

 

[tony sayer]

In article <jroul41j3m3veoo8fb61035hqco1dla98r@4ax.com>, Archimedes'
Lever <OneBigLever@InfiniteSeries.Org> scribeth thus

On Sat, 3 Jan 2009 10:28:53 +0000, tony sayer <tony@bancom.co.uk> wrote:

In article <jevql4tu0q5sb3f8mmta5g5f7d25nml5og@4ax.com>, Archimedes'
Lever <OneBigLever@InfiniteSeries.Org> scribeth thus
On Fri, 2 Jan 2009 02:25:48 -0000, "Phil McKerracher"
usenet@mckerracher.net> wrote:


It's true that isolation is not important for a well-insulated telephone.


A 10kV arc from a 2MV lightning strike *COULD* make it all the way into
the handset, and OUT of the perforations in the handset, through the
earpiece or mouthpiece, and hit the user. The microphone and the
earpiece transducer both use metal cans, making the distance to the user
a mere 1/4" through air. Not good.

This is ONE of the many reasons that isolation elements are
incorporated at VARIOUS locations in the system. One of which is at the
CABLE connection to the phone itself, which is why isolation elements can
be found at these positions. This is a standard element of device design
where human contact is present, and has nothing to do with it being in a
plastic case. It isn't your Dad's AC fed two wire drill motor with an
un-phased power cord and metal case. It is, however, in close
(electrical) proximity (potentially) with lightning events, and that is
why arresting elements have been incorporated.

Most incorporations are overkill, as it were, but I am happy that our
scientists and engineers of decades past were concerned about such
things.

Idiots today seem to think everything is low voltage and harmless.

Ummmm....

A standard UK BT NTTP socket as used for the UK POTS would have a gas
tube arrestor -across- the line. IIRC there is a centre tapped point
which might be earthed, but in most all cases won't be;-(..

So several miles of OHL and just that and an -out of service- resistor
doesn't seem like much effective protection to what nature can
deliver....


You left out the isolation transformer in the phone.

Also, the tube will have a return path, and quell any HV down to
non-arcing voltages.

Don't think old Jove's bolts will notice that much..
--
Tony Sayer

 

[krw]

On Sat, 03 Jan 2009 11:05:01 -0500, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

Eeyore wrote:

"Howls of derisive laughter"


That is a sign of dementia.

Or rabies.