Getting matching transformer from telephone

[Eeyore]

The definition of on/off hook supervision has not changed, and that
makes it exceedingly relevant.


Not necessarily. Some do have transformers.

Such as ?

Graham

 

[Eeyore]

Not irrelavant when we were discussing the history of why 600 ohms became
the standard impedance for audio distribution.

It isn't. Not for about 45 years.

Graham

 

[Archimedes' Lever]

In civilised parts of the world with proper infrastructure it can.

Graham

In the right situation, someone might actually consider you as credible
too. Just not in the reality that we all live in. We call it the real
world. In it, you and credibility do not homogenize together. That is
one water your oily ass won't mix with.

 

[Eeyore]

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

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

Graham

 

[Archimedes' Lever]

Such as ?

Is it really so goddamned hard to accept the fact that such items do
exist?

Probably just as hard it is to accept the fact that you are a self
denying, US hating retard.

 

[Eeyore]

Which, to anyone with even half a brain, obviously means that he wishes
to utilize it as well, you stupid fucktard!

He can only utilise it if it contains one OBVIOUSLY !

Graham

 

[Eeyore]

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

A: OFF HOOK you twit.

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

Graham

 

[Archimedes' Lever]

He can only utilise it if it contains one OBVIOUSLY !

Graham

That was not the argument, you retarded non-human dumbfuck.

The word is UTILIZE.

 

[Eeyore]

You falsely claimed it was otherwise. Seems *you* are
the one with a lack of "know" about this topic.

What ?

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

Graham

 

[Eeyore]

You mean you didn't know that either?

Ok, a typical dynamic microphone is often nearer 150-300 ohms output

Rather different to 2k I think you'll agree.

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

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

And Pin 1 on an XLR is ALWAYS the cable shield. It may also be GROUND - but
that's another story. It certainly isn't used to provide phantom power under
ANY circumstances. And the last time I came across a centre tapped transformer
in pro-audio was 35 years ago. It caused a bloody nuisance too. Modern
balanced audio circuits are 'floating'. The centre tap provides ZERO
advantage.

I now expect you to make an idiot of yourself trying to refute that one.

Graham

 

[Phil Allison]

"Floyd LYING FUCKWIT Davidson"

Tell us about how different a 600:600 transformer is
from a 10k:10k transformer, eh?

** Err -

could it be the optimum source and load impedances are 16.7 times higher in
the latter case ????

Nah - electronics is always much trickier than that .




...... Phil

 

[Phil Allison]

"Floyd LIAR Davidson"


** **** the HELL OFF

you know nothing BLOODY IDIOT !!!





..... Phil

 

[Phil Allison]

"Archimedes'= LUNATIC TROLL"


** Go DROP DEAD !!


you VILE TROLLING PIECE OF SHIT




.... Phil

 

[Archimedes' Lever]

"Archimedes'= LUNATIC TROLL"


** Go DROP DEAD !!


you VILE TROLLING PIECE OF SHIT




... Phil

Better than being the vile, sub-human piece of shit that you are, boy.

 

[Eeyore]

In the right situation, someone might actually consider you as credible
too. Just not in the reality that we all live in. We call it the real
world. In it, you and credibility do not homogenize together. That is
one water your oily ass won't mix with.

You are DimBulb and I claim my £1000.

Graham

 

[Eeyore]

That was not the argument, you retarded non-human dumbfuck.

The word is UTILIZE.

Not in the civilised world.

http://www.thinkscience.co.jp/toolshed/2008/10/british-vs-american-english-spelling/

Graham

 

[Eeyore]

Tell us about how different a 600:600 transformer is
from a 10k:10k transformer, eh?

Have you even the tiniest clue yourself ?

Graham

 

[Eeyore]

Better than being the vile, sub-human piece of shit that you are, boy.

He does at least know what he's talking about, unlike you.

Graham

 

[Eeyore]

How would you know that?

Jesus Wept !

Graham

 

[Phil Allison]

"Floyd FUCKING LIAR Davidson"

It has worked for roughly 100 years,

** Wrong context - you FUCKWIT IMBECILE

PC sound cards and small recorders are not 100 years old !!

YOU FUCKING ASININE LYING IDIOT !!!

There is no "level control". I said, "to set
levels"... which is done by various means, such as
designing the right loss into pads, etc.

** Funny how exactly that was in the next para of my post.

YOU FUCKING ASININE LYING IDIOT !!!

You have that backwards. If you use a properly designed
pad with the correct impedance it will maximized common
mode rejection of induced currents.

** That will *NOT* have the required CMMR to eliminate all trace of hum
NOR be safe to use.

YOU FUCKING ASININE LYING IDIOT !!!

Go DROP DEAD !!!




...... Phil