Skin Effect in Solid/Stranded/Litzendraht Wire -Guy Macon

[Guy Macon]

ChairmanOfTheBored


YOU said this:

"A TV deflection circuit is NOT a flyback supply, idiot. The flyback
in a TV is in the ANODE supply, you stupid ****."

Remember?

Weasel time, again? Go for it.

You owe the weasels an apology for comparing them to ChairmanOfTheBored...

 

[John Larkin]

You owe the weasels an apology for comparing them to ChairmanOfTheBored...

oh. sorrreee.

john

 

[Spurious Response]

From wiki regarding Kettering's points based ignition system design:

The capacitor is used to absorb the back EMF from the magnetic field in
the coil to minimize point contact burning and maximize point life. The
Kettering system became the primary ignition system for many years in the
automotive industry due to its lower cost, higher reliability and
relative simplicity.

Bullshit. It does upon energization, and upon removal of power. That
is, in fact, EXACTLY how a car coil works.

No back EMF, eh' GriseTard?

 

[ChairmanOfTheBored]

The Kettering spark system is a classic Flyback circuit.

Wrong flyback output is rectified. You know... DIODE(S).

Auto ignition has no diodes.

CRT anode supplies are coupled WITH the horizontal deflection circuit,
not the same circuit. Two separate entities, even though tied together
cycle for cycle.

And NO, they do NOT have to be a flyback design.

 

[ChairmanOfTheBored]

YOU said this:

"A TV deflection circuit is NOT a flyback supply, idiot. The flyback
in a TV is in the ANODE supply, you stupid ****."

Remember?

Weasel time, again? Go for it.

**** you. I responded to HIS use of the term TV in the discussion.

Learn to read.

Oh, and tell us, Johnny boy.. what is the picture producing component
of a TV?

Answer: A CRT!

Grow up, boy.

 

[ChairmanOfTheBored]

You owe the weasels an apology for comparing them to ChairmanOfTheBored...

Said the utter idiot that thinks that a "wheel pump" with a compressor
piston the size of a pencil lead is feasible. You're clueless.

 

[AnimalMagic]

oh. sorrreee.

I told you, Johnny... It wouldn't matter what nym I post with. You
and your stupid, childish jabs would always be there.

 

[Robert Baer]

Wrong flyback output is rectified. You know... DIODE(S).

Auto ignition has no diodes.

CRT anode supplies are coupled WITH the horizontal deflection circuit,
not the same circuit. Two separate entities, even though tied together
cycle for cycle.

And NO, they do NOT have to be a flyback design.

One does not need diodes to make a flyback circuit...

 

[John Larkin]

I told you, Johnny... It wouldn't matter what nym I post with. You
and your stupid, childish jabs would always be there.

If you changed your name to Annabelle Rogers we'd know right away that
it's still you. That's because you'd still call everybody else stupid,
using the same old curse words and lame insults, and because you'd
still insist on stating things that are flat wrong, and arguing your
position without facts, math, or links. None of your silly nyms fool
anybody for 10 minutes, because you're so obviously the same guy.

Listen up: it's not us that makes you be treated like a fool. It's
100% you. And you could fix it if you tried.


John

 

[John Larkin]

**** you. I responded to HIS use of the term TV in the discussion.

Learn to read.

Oh, and tell us, Johnny boy.. what is the picture producing component
of a TV?

Answer: A CRT!

Or an LCD. Or a plasma display. Or a DLP. Or an OLED.

Grow up, boy.

Join the 21st century, dude.

John

 

[Winfield Hill]

Fascinating! How many strands, and how thick is each one?

It has a single 0.21" copper wire in the center.
There are five triangular segments or bunches around
this, and each one has about fifty-six 0.1" dia (#10)
copper strands. The segment orientation is not the
same on the two ends of my piece, so they must rotate
around the center, along the length of the cable. The
overall copper diameter varies from 1.9 to 1.95 inches.
The insulation layer is from 0.8 to 0.85 inches thick,
and I have to assume it has no pinholes.

 

[Tom Bruhns]

It has a single 0.21" copper wire in the center.
There are five triangular segments or bunches around
this, and each one has about fifty-six 0.1" dia (#10)
copper strands. The segment orientation is not the
same on the two ends of my piece, so they must rotate
around the center, along the length of the cable. The
overall copper diameter varies from 1.9 to 1.95 inches.
The insulation layer is from 0.8 to 0.85 inches thick,
and I have to assume it has no pinholes.

One of the issues in the design of high voltage systems, especially AC
high voltage systems, is voids. If the field strength is great enough
and void large enough, you'll get corona in the void, and the very
reactive ions in the corona will eat away at pretty much any organic
insulation. I'd guess that not only are there no pinholes, but that
they worked pretty hard to avoid voids internal to the insulation too.

Thanks for posting the details, Win.

Cheers,
Tom

 

[Winfield Hill]

One of the issues in the design of high voltage systems, especially AC
high voltage systems, is voids. If the field strength is great enough
and void large enough, you'll get corona in the void, and the very
reactive ions in the corona will eat away at pretty much any organic
insulation. I'd guess that not only are there no pinholes, but that
they worked pretty hard to avoid voids internal to the insulation too.

Thanks for posting the details, Win.

I should take a picture and post it on the net. At the
time of the installation I did a search for information
about Pirelli HV cable - datasheets, web page, anything.
At the time I couldn't even find evidence that Pirelli
made HV cable, let alone any detail. In a recent search
I found mention of contracts they were winning here and
there, etc., but I didn't find an information motherlode,
assuming such a thing exists someplace. But I didn't
look very hard this last time.

 

[Fred Bartoli]

Le Fri, 19 Oct 2007 13:50:27 -0700, Winfield Hill a écrit:

I should take a picture and post it on the net. At the time of the
installation I did a search for information about Pirelli HV cable -
datasheets, web page, anything. At the time I couldn't even find
evidence that Pirelli made HV cable, let alone any detail. In a recent
search I found mention of contracts they were winning here and there,
etc., but I didn't find an information motherlode, assuming such a
thing exists someplace. But I didn't look very hard this last time.

I just did a quick search and could find almost nothing, except this:
http://depris.cephes.free.fr/cables_souterrains.htm

just because I know the full name, which is Treficable-Pirelli.

I happen to know this because some of those cables are made in France at
Amfreville la Mi-Voie near Rouen, a few km away from where I lived when I
was young.

 

[JosephKK]

Winfield Hill [email protected] posted to sci.electronics.design:

I should take a picture and post it on the net. At the
time of the installation I did a search for information
about Pirelli HV cable - datasheets, web page, anything.
At the time I couldn't even find evidence that Pirelli
made HV cable, let alone any detail. In a recent search
I found mention of contracts they were winning here and
there, etc., but I didn't find an information motherlode,
assuming such a thing exists someplace. But I didn't
look very hard this last time.

If i realized that you were actively looking i could have told you
that their name changed to Prysmian shortly after Pirelli sold that
unit.

Their competitors include ABB, Oakonite, Kerite, Plymouth Rubber and a
couple others i can re-find quickly. Still interested?