Coil Winding Direction: Clockwise vs Counter-Clockwise

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SUMMARY

The discussion centers on the effects of winding a transducer coil in different directions, specifically clockwise and counter-clockwise. When the winding direction is reversed halfway through the coil, the two halves will not perfectly cancel each other out due to axial displacement. This results in a complex interaction where the overall magnetic field is affected, leading to potential inefficiencies in the coil's performance. Understanding this phenomenon is crucial for optimizing coil design in applications such as sensors and inductors.

PREREQUISITES
  • Basic understanding of electromagnetic theory
  • Familiarity with coil winding techniques
  • Knowledge of transducer functionality
  • Experience with magnetic field interactions
NEXT STEPS
  • Research the principles of electromagnetic induction
  • Learn about coil winding techniques and their impact on performance
  • Study the effects of axial displacement in coil design
  • Explore optimization strategies for transducer coils
USEFUL FOR

Electrical engineers, coil designers, and anyone involved in the development of transducers or inductive components will benefit from this discussion.

Buych778
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I am wrapping a transducer coil and had a question with the winding direction. Let's say that I am wrapping the wire around a bolt in a clockwise direction. After I reach the halfway point of the wire, if I then reversed the direction I am winding to counter-clockwise, what would it do? I am unsure whether it would cancel out the previous coil, add to it, or whatever else is possible. I read several responses to other questions similar, but they were unspecific and I was unsure what about what they were saying.
 
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Yes they would undue each other. But not perfectly, because of the axial displacement of the two halves.

I
 
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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