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Help winding my own inductor?

B

bushbadee

Jan 1, 1970
0
MagInc use to sample me all the time.
They are pretty good about that.
But of course the stuff I hand wound often wound up in production.

"John > > Use maybe 78 material from this catalog? It is recommended for
applications
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that bushbadee <[email protected]>
wrote (in said:
Not impossible
What you need is a shuttle.
If the hole is real small you can use a needle as a shuttle.
If it is larger then you can take a wire coat hanger and cut a section off
and with a riffle file, file notches in a section of it and wrap your wire
around the notches in the wire (Or a metal or wood rod) that will keep your
wire neat and nice while you pass it around the core.
I have wound many of them

The 1.6 mm wire work-hardens after a few turns and then it would be
easier to wind the coat hanger round the core.

If I send you the core and wire, will you wind it for me?
 
B

bushbadee

Jan 1, 1970
0
What gauge is that.?
I do not have the time to look it up.
I have, as I said, wound many.
Why would you use a work hardened wire.?
Using a shuttle keeps the wire from getting work hardened and works quite
well with copper wire.
I have wound hundreds of turns on transformers with this method.
Sure I will wind it for you, if you will pay my price.
For less than 8 hours work, it is $200 bucks an hour.
Travel time is included in that 8 hours and there is an additional charge of
50 cents per mile.
Yes people do pay me that .

In fact for that much I will even design your circuit.
If there is a patent involved, I get credit for the patent and one third
ownership.
 
D

DarkMatter

Jan 1, 1970
0
Sure I will wind it for you, if you will pay my price.
For less than 8 hours work, it is $200 bucks an hour.
Travel time is included in that 8 hours and there is an additional charge of
50 cents per mile.
Yes people do pay me that .

For winding a choke? Sorry. You ain't worth that much on your best
day.
 
John said:
I read in sci.electronics.design that Tim Wescott


Yes. I bought a demister antenna kit from Maplin that required a small
ferrite toroid to be wound with 1.6 mm wire. In two words - im possible.
--

You left out the word between im and possible - probably
out of consideration for our tender psyches.
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that bushbadee <[email protected]>
What gauge is that.?
I do not have the time to look it up.

Neither do I. Unless you pay $200 an hour.(;-)

OK. 1.6 mm is 1/16 inch nearly, so that's about AWG14.
I have, as I said, wound many.
Why would you use a work hardened wire.?

I'd much prefer not to
Using a shuttle keeps the wire from getting work hardened

I don't suppose you'd explain how it performs that metallurgical
miracle? You can't thread the wire through the centre hole and tighten
it to the core without bending it, and bending it makes it work harden.
and works quite
well with copper wire.

I expect it does, for thin enough wire.
 
D

DarkMatter

Jan 1, 1970
0
I have a 20 mH inductor (off the shelf) but is getting hot with the current
I'm passing through it.

Where do I start? References and advice welcome.

You need a high perm core. Large wire size makes for low I squared
R as well.

Arnold makes some really good cores for this. Also use several
smaller gauge wires in a litz configuration for even better I
performance at your frequency.

Use a toroid. much easier than a pot core, and better as well.
Easy to wind with Litz as well.

26Ga mag wire can do 1 amp, but I'd go a little bigger.
Seven 32Ga mg wires makes a real good litz that can do over an amp
easy.

Seven 30Ga wires makes for about just over single 24Ga, but performs
much better.

Twist them together to form a single conductor.

Count only the turns *inside* the core center.
 
D

DarkMatter

Jan 1, 1970
0
I seriously hate bastards who *define* their *meaning* with arseholelicks.
That would be Asterixs.

I *seriously* hate retards that get all riled up over petty, E-1
grade baby bullshit.
 
D

DarkMatter

Jan 1, 1970
0
Why would you use a work hardened wire.?

Dumbshit. YOU claim to have been winding copper for years.

Copper wire "work hardens". ALL copper wire. For you to not know
that is a heck of a tell... Again.

When copper is flexed, it hardens where the flexure takes place.
Again, you should know all about this. The flexure has to be very
*VERY* slow for this not to happen. Rare.

Be sure to go grab another coffee.
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that [email protected] wrote (in
You left out the word between im and possible - probably
out of consideration for our tender psyches.

Well, I was quoting Sam Goldwyn, I think. But to quote Tommy Atkins, it
becomes one word again 'imfu***ngpossible'. This is an example of
'mtesis', and that is the only English word that starts with 'mt'.
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that DarkMatter <DarkMatter@thebaratthe
endoftheuniverse.org> wrote (in <j2b9uv0hn5biob2bdab76fn9j6l21ou38n@4ax.
com>) about 'Help winding my own inductor?', on Sat, 20 Dec 2003:
Twist them together to form a single conductor.

You can't make genuine Litz wire simply by twisting the strands
together. The interweaving pattern is a lot more complex.
 
D

DarkMatter

Jan 1, 1970
0
winding a bobbin and slipping it over the center leg of one of the
halves of a pot core is harder than winding a toroid? Imagine that!!!

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.
 
D

DarkMatter

Jan 1, 1970
0
You can't make genuine Litz wire simply by twisting the strands
together. The interweaving pattern is a lot more complex.

You're nuts. Go to any wire maker's site. Litz wire is several
strands of finer pitch mag wire, all coated, that are either in
twisted, OR non-twisted configurations. You can run ANY number of
parallel strands in a choke, and gain a litz advantage at even this
low (25kHz) frequency.

It is not woven. That leans toward Litz Ribbon, however. An
interesting idea.

You must be thinking of the type of build the winding process on
some HF coils has.
 
G

Genome

Jan 1, 1970
0
DarkMatter said:
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.

Awefully sorry folks, I have just noticed that my cock is not being
fellated. Normal service will be resumed as soon as is possible.

DNA
 
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