Coil winding direction on opposite legs?

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Discussion Overview

The discussion revolves around the proper winding direction of coils on opposite legs of a transformer. Participants explore the implications of winding direction on polarity and the arrangement of multi-layered coils.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant inquires about the correct winding direction to ensure the same polarity on each coil, questioning whether both should start at the top and if the direction should be the same.
  • Another participant references a diagram from Wikipedia indicating that one coil is wound counterclockwise (CCW) while the other is wound clockwise (CW), which addresses part of the initial inquiry.
  • A follow-up question is posed regarding the start and end points of multi-layered coils and their arrangement.
  • One participant asserts that the direction of winding is crucial, stating that the polarity of the ends will be as indicated in the diagram, implying that opposite winding directions are necessary for the coils.

Areas of Agreement / Disagreement

There is no clear consensus on the best approach for winding multi-layered coils, as participants express differing views on the implications of winding direction and polarity.

Contextual Notes

Participants have not fully resolved the implications of multi-layered coil arrangements, and there may be assumptions regarding the definitions of winding direction and polarity that are not explicitly stated.

hobbs125
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I am winding a transformer. I want to get it done right the first time.

The transformer has a square core with a coils on opposite legs.

I want the polarity to be the same on each coil so how do I wind them?
Should the start of the windings be at the top of each coil?
Should the direction of the wind be the same for each one?

Or since the coils are on opposite legs should each coil be wound in a opposite direction and start at opposite ends?
 

Attachments

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Engineering news on Phys.org
Here is a good diagram:

350px-Transformer3d_col3.svg.png


This is from the Wikipedia article about transformers.
 
Ok,

That drawing shows one coil is wound CCW while the other is wound CW, that answers one of my questions.
What about the coils if they are multi layered, where should the start and end of each coil be?
 
It doesn't matter as long as the direction of the winding is as shown. The polarity of the ends of the windings will be as shown.

Yes, the windings are in opposite directions relative to the flux around the coil.
 
vk6kro,

Thanks for the help and info. You have helped me a great deal on this site and I really appreciate it;)
 

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