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Old August 8th 19, 05:45 PM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

Hi all,
If you put two coils on one form, but wind one in the opposite
direction, Do the currents flow in opposite directions?

Mikek

PS. opposite winding direction as in clockwise or counter clockwise,
or like a left hand and right hand thread.
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Old August 9th 19, 02:06 PM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

On 8/8/2019 11:45 AM, amdx wrote:
Hi all,
If you put two coils on one form, but wind one in the opposite
direction, Do the currents flow in opposite directions?

Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek

PS. opposite winding direction as in clockwise or counter clockwise,
Â*or like a left hand and right hand thread.


If it is a continuous coil with only two connections (start to finish)
but winding is reversed in the middle of the coil, the current does not
reverse.
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Old August 13th 19, 03:29 PM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

On 8/9/2019 8:06 AM, John S wrote:
On 8/8/2019 11:45 AM, amdx wrote:
Hi all,
If you put two coils on one form, but wind one in the opposite
direction, Do the currents flow in opposite directions?

Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek

PS. opposite winding direction as in clockwise or counter clockwise,
Â*Â*or like a left hand and right hand thread.


If it is a continuous coil with only two connections (start to finish)
but winding is reversed in the middle of the coil, the current does not
reverse.


That wasn't what I ask, but since I posted I did put an answer
together. It took me several drawing to get to a final answer that makes
it so simple I don't know why I ask the question. I took me several
hours to come to the conclusion though.
My answer to your question would be, the current does reverse and for
your example, the current would be very low. Probably not zero because
of time/phase concerns.

I have one drawing showing a coil and the right hand rule that gives the
answer.

file:///C:/Users/Lamont/Dropbox/contra%20wound%20coil%20with%20flux%20and%20curren t%20flow.jpg



Mikek







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Old August 14th 19, 01:26 AM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

On Tue, 13 Aug 2019 09:29:19 -0500, amdx wrote:

file:///C:/Users/Lamont/Dropbox/contra%20wound%20coil%20with%20flux%20and%20curren t%20flow.jpg


Errrrr... Uhhhhh... There's no way we can see a file on your personal computer.

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Old August 15th 19, 02:40 PM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

On 8/13/2019 7:26 PM, Allodoxaphobia wrote:
On Tue, 13 Aug 2019 09:29:19 -0500, amdx wrote:

file:///C:/Users/Lamont/Dropbox/contra%20wound%20coil%20with%20flux%20and%20curren t%20flow.jpg


Errrrr... Uhhhhh... There's no way we can see a file on your personal computer.



Thanks for pointing that out.

https://www.dropbox.com/s/c4k2hh4syd...0flow.jpg?dl=0


Mikek



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Old August 14th 19, 01:11 PM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

On 8/13/2019 9:29 AM, amdx wrote:
On 8/9/2019 8:06 AM, John S wrote:
On 8/8/2019 11:45 AM, amdx wrote:
Hi all,
If you put two coils on one form, but wind one in the opposite
direction, Do the currents flow in opposite directions?

Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek

PS. opposite winding direction as in clockwise or counter clockwise,
Â*Â*or like a left hand and right hand thread.


If it is a continuous coil with only two connections (start to finish)
but winding is reversed in the middle of the coil, the current does
not reverse.


Â*That wasn't what I ask, but since I posted I did put an answer
together. It took me several drawing to get to a final answer that makes
it so simple I don't know why I ask the question. I took me several
hours to come to the conclusion though.
Â*My answer to your question would be, the current does reverse and for
your example, the current would be very low. Probably not zero because
of time/phase concerns.

I have one drawing showing a coil and the right hand rule that gives the
answer.

file:///C:/Users/Lamont/Dropbox/contra%20wound%20coil%20with%20flux%20and%20curren t%20flow.jpg



Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek


The current can not reverse in a series connection. But the magnet field
can reverse in the two series windings if one of the windings is reverse
wound.

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Old August 15th 19, 02:46 PM posted to rec.radio.amateur.antenna
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Default A question about two coils on one form

On 8/14/2019 7:11 AM, John S wrote:
On 8/13/2019 9:29 AM, amdx wrote:
On 8/9/2019 8:06 AM, John S wrote:
On 8/8/2019 11:45 AM, amdx wrote:
Hi all,
If you put two coils on one form, but wind one in the opposite
direction, Do the currents flow in opposite directions?

Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek

PS. opposite winding direction as in clockwise or counter clockwise,
Â*Â*or like a left hand and right hand thread.

If it is a continuous coil with only two connections (start to
finish) but winding is reversed in the middle of the coil, the
current does not reverse.


Â*Â*That wasn't what I ask, but since I posted I did put an answer
together. It took me several drawing to get to a final answer that
makes it so simple I don't know why I ask the question. I took me
several hours to come to the conclusion though.
Â*Â*My answer to your question would be, the current does reverse and
for your example, the current would be very low. Probably not zero
because of time/phase concerns.

I have one drawing showing a coil and the right hand rule that gives
the answer.

file:///C:/Users/Lamont/Dropbox/contra%20wound%20coil%20with%20flux%20and%20curren t%20flow.jpg



Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek


The current can not reverse in a series connection. But the magnet field
can reverse in the two series windings if one of the windings is reverse
wound.


I should have added more information.
The coil(s) are put in an electromagnetic field, creating a magnetic
field around the coil. the magnetic field creates a current in each coil.
what is the direction of each of those currents?
https://www.dropbox.com/s/c4k2hh4syd...0flow.jpg?dl=0


Mikek
PS, it took me hours to get this understood and now, it's like, well ya!

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Old August 15th 19, 08:41 PM posted to rec.radio.amateur.antenna
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Posts: 550
Default A question about two coils on one form

On 8/15/2019 8:46 AM, amdx wrote:
On 8/14/2019 7:11 AM, John S wrote:
On 8/13/2019 9:29 AM, amdx wrote:
On 8/9/2019 8:06 AM, John S wrote:
On 8/8/2019 11:45 AM, amdx wrote:
Hi all,
If you put two coils on one form, but wind one in the opposite
direction, Do the currents flow in opposite directions?

Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek

PS. opposite winding direction as in clockwise or counter clockwise,
Â*Â*or like a left hand and right hand thread.

If it is a continuous coil with only two connections (start to
finish) but winding is reversed in the middle of the coil, the
current does not reverse.

Â*Â*That wasn't what I ask, but since I posted I did put an answer
together. It took me several drawing to get to a final answer that
makes it so simple I don't know why I ask the question. I took me
several hours to come to the conclusion though.
Â*Â*My answer to your question would be, the current does reverse and
for your example, the current would be very low. Probably not zero
because of time/phase concerns.

I have one drawing showing a coil and the right hand rule that gives
the answer.

file:///C:/Users/Lamont/Dropbox/contra%20wound%20coil%20with%20flux%20and%20curren t%20flow.jpg



Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Mikek


The current can not reverse in a series connection. But the magnet
field can reverse in the two series windings if one of the windings is
reverse wound.


Â*I should have added more information.
The coil(s) are put in an electromagnetic field, creating a magnetic
field around the coil. the magnetic field creates a current in each coil.
what is the direction of each of those currents?
https://www.dropbox.com/s/c4k2hh4syd...0flow.jpg?dl=0


Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* Â*Â*Â* Mikek
PS, it took me hours to get this understood and now, it's like, well ya!


Ok. You have all the answers so go with that. Good luck.
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