Help winding my own inductor?

[DarkMatter]

I read in sci.electronics.design that DarkMatter <DarkMatter@thebaratthe
endoftheuniverse.org> wrote (in <8i7auvkadbh93ss7i7et2v4v4s5n6eg1p2@4ax.
com>) about 'Help winding my own inductor?', on Sat, 20 Dec 2003:

I LIKE it! just a factor of 32 times as many turns. Expert? Ha!

Dumbshit. I just don't happen to remember the reading we got the
other day. It is likely to be in microhenries, however, as the turns
count is low.

**** you! Ha!

 

[John Fields]

I read in sci.electronics.design that DarkMatter <DarkMatter@thebaratthe
endoftheuniverse.org> wrote (in <8ocbuvcfke2pu8joqfoc9mt9j4itr9ip9u@4ax.
com>) about 'Help winding my own inductor?', on Sun, 21 Dec 2003:

Tie a weight on it and let it sink back. (;-)

 

[John Fields]

I read in sci.electronics.design that DarkMatter <DarkMatter@thebaratthe
endoftheuniverse.org> wrote (in <8i7auvkadbh93ss7i7et2v4v4s5n6eg1p2@4ax.
com>) about 'Help winding my own inductor?', on Sat, 20 Dec 2003:

I LIKE it! just a factor of 32 times as many turns. Expert? Ha!

 

[John Fields]

Now, it appears that you don't even know what litz wire is for.

 

[John Fields]

Skin effect is the exact reason. Again, I can place the same number
of turns at the SAME circular mil area onto a core and get different
performance at different operating frequencies, and said performance
is HIGHER on the multi-strand configurations, and the reason IS skin
effect.

Where have you been?

 

[John Fields]

I make linear and switched power supplies, and I know that there is
an effect, and we get better operation at the same gauges on any given
choke. It has everything to do with skin effect.

---
If you think a Litz-wound choke has anything to do with better operation
of a linear supply because of skin effect then I suggest that the threat
to your livelihood which I pose, as you claimed in a previous post,
diminishes to zero when compared to the threat you pose to yourself.

The reason there may be an advantage gained by using Litz-wound
inductors in a switching supply should be evident to a swich-mode power
supply maker like you, so what is it?

 

[John Fields]

Without a winding mandrel, holding a loose bobbin in one's hand
while winding it is no easier than winding a hand held toroid would
be.

Imagine that.

---
Well, considering that winding the wire on a shuttle (if you're going
to put more than just a few turns on the toroid) is equivalent to
winding the bobbin, then unwinding the shuttle onto the toroid is an
extra step that needs to be taken when winding the toroid. Of course
the shuttle could be dispensed with, but then having to wind the
entire loose length of the remaining wire through the toroid for every
turn while holding all the turns already wound tight sure makes it
seem like winding the bobbin would be easier, even if you've got hands
like hams.

Try to imagine that.

 

[John Fields]

A few posts ago, you were telling us how seven strands did not make
a litz wire. Now, after your lame ass has done some searching, and
you know there are 3 strand configurations, your lame ass attacks my
statement that any strand count above one is litz.

---
The seven strands I was telling you about, as you well know, are the
seven strands of #22 you were referring to as equivalent to a strand of
#16. You, you phony, don't even know how Litz wire is wound and before
you got called on it you thought that any number of paralled conductors
was referred to as Litz wire, as evidenced from your misuse of the term.
---

 

[John Fields]

Look, chucko. WIre size doubles every three gauges. That is what I
said, and that is what is true.

In fact... Three 22s makes a 19, and three more makes another 19.

Two 19s doesn't even make one 16 so seven 22s is most certainly
closer to a single 16 than it is your lame assed 14 claim.

Try again.

 

[John Fields]

Wrong. They MAY be woven, but generally are just twisted.


Here you speak of perfect twisting. Which is it, boy, twisted or
woven?

No. TWISTING only works well with certain strand counts. You
describe circular object nesting numbers. A given, and known for
centuries. You state nothing new.

Litz effects occur with any count above one. It is simple math.
More skin, better performance. Period.

 

[John Fields]

Dumbshit. I just don't happen to remember the reading we got the
other day. It is likely to be in microhenries, however, as the turns
count is low.

---
Remembering the reading should only be something a grunt would have to
come up with. Someone conversant in inductor design would surely be
able to come up with at least a good guess in differentiating between
two inductors with a thousand-fold difference in inductance knowing,
very roughly, the core size and current requirements.

 

[Tim Auton]

Look, chucko. WIre size doubles every three gauges. That is what I
said, and that is what is true.

In fact... Three 22s makes a 19, and three more makes another 19.

Two 19s doesn't even make one 16 so seven 22s is most certainly
closer to a single 16 than it is your lame assed 14 claim.

Please, move on to the 20th century (if you can't manage the 21st) and
use metres (mm in this case). This is the perfect example of why
metric is overwhelmingly superior to the array of units that
constitute that various imperial systems still in use in some parts of
the world.

They were nice when we had to do calculations in our heads. Those days
ended decades ago. Move on.


Tim

 

[John Woodgate]

I read in sci.electronics.design that DarkMatter <DarkMatter@thebaratthe
endoftheuniverse.org> wrote (in <54obuv852g9t12b4126vte2udn44eme6st@4ax.
com>) about 'Help winding my own inductor?', on Sun, 21 Dec 2003:

Wrong. They MAY be woven, but generally are just twisted.


Here you speak of perfect twisting. Which is it, boy, twisted or
woven?

It isn't worth discussing with you, because you are blatantly dishonest.
I wrote that Litz weaving works only for certain numbers of strands,
ROUGHLY as twisting...

LITZ is woven, not twisted.

 

[John Woodgate]

I read in sci.electronics.design that John Fields <jfields@austininstrum

---
1000 times, no, John?

Z = n² through a transformer, but for an inductor, L changes linearly
with n.

Oh, no, John, no, John, no, John, no! Not if the turns are close-
coupled, as they are in a pot core.

 

[Paul Burridge]

Well, considering that winding the wire on a shuttle (if you're going
to put more than just a few turns on the toroid) is equivalent to
winding the bobbin, then unwinding the shuttle onto the toroid is an
extra step that needs to be taken when winding the toroid. Of course
the shuttle could be dispensed with, but then having to wind the
entire loose length of the remaining wire through the toroid for every
turn while holding all the turns already wound tight sure makes it
seem like winding the bobbin would be easier, even if you've got hands
like hams.

I've often wondered when winding these little toroids you get that are
only about an inch across what effect, if any, scraping off the wire's
enamel has on the finished job. I mean it would be tragic to end up
accidentally shorting turns out... But there again I don't think the
mateial they're made from is particularly conductive, is it?

 

[Paul Burridge]

You lose. Most commercial litz is simple twisted or even non
twisted bundling.

No it's not. You're an idiot.
:->

 

[Paul Burridge]

I read in sci.electronics.design that DarkMatter <DarkMatter@thebaratthe
endoftheuniverse.org> wrote (in <jacbuv8j5gbhknk9v8t1g3bvu3htoh1qb8@4ax.
com>) about 'Help winding my own inductor?', on Sun, 21 Dec 2003:

Brilliant! You call me an idiot and claim to know all about the subject,
yet you think it was invented by someone called 'Litz'!

That's right, John. Litz was a German composer, as in "Brahms and
Litz"

 

[Paul Burridge]

Please, move on to the 20th century (if you can't manage the 21st) and
use metres (mm in this case). This is the perfect example of why
metric is overwhelmingly superior to the array of units that
constitute that various imperial systems still in use in some parts of
the world.

They were nice when we had to do calculations in our heads. Those days
ended decades ago. Move on.

Screw the metric system. Long live Imperial measures!

 

[Daniel Haude]

["Followup-To:" header set to sci.electronics.design.]
On Sun, 21 Dec 2003 10:01:11 -0800,

Look, chucko. WIre size doubles every three gauges. That is what I
said, and that is what is true.

In fact... Three 22s makes a 19, and three more makes another 19.

I've never in my life used AWG and I don't intend to ever work with it,
but the interesting thing is that one doesn't have to know shit about
gauges to see that your two above statements just contradict each other.

Two 19s doesn't even make one 16

According to you, they do: "WIre size doubles every three gauges."

--Daniel

 

[John Fields]

I read in sci.electronics.design that John Fields <jfields@austininstrum


Oh, no, John, no, John, no, John, no! Not if the turns are close-
coupled, as they are in a pot core.