How do Toroids work, and What are they used for?

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Discussion Overview

The discussion revolves around the workings and applications of toroids, particularly in the context of electricity and magnetism. Participants explore both theoretical aspects and practical uses in electronics and other physics applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants inquire about the function and applications of toroids, specifically in relation to inductors and their role in electronics.
  • One participant humorously suggests that toroids are simply a shape, comparing them to other geometric forms.
  • A clarification is made regarding the specific interest in toroidal inductors and their electrical properties.
  • Participants mention that a toroidal ferrite core with wire wound on it is referred to as a choke in electrical engineering.
  • There is a discussion about the utility of toroids in blocking fast-changing signals and interference in circuits.
  • Some participants note various applications of toroids, including their use in noise blocking, transformers, current transformers, and line filters.
  • Different materials for toroids are mentioned, such as powdered iron and ferrite, with emphasis on their application depending on frequency and context.

Areas of Agreement / Disagreement

Participants express uncertainty regarding specific real-life applications of toroids, with some suggesting uses while others remain unsure. There is no consensus on a comprehensive list of applications or a definitive explanation of how toroids work.

Contextual Notes

Some participants acknowledge a lack of understanding regarding the practical applications of toroids, indicating that further exploration of their uses in electronics may be necessary.

Triangulum
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How do Toroids (inductors) work, and What are they used for (in electronics and/or other physics applications)?

Thanks
 
Last edited:
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They're used for lots of things: washers, bangles, rings on fingers; it's just a shape, like 'square' is.
 
Triangulum said:
How do Toroids work, and What are they used for?

Thanks

Are you thinking of toroidal magnets?
 
Sorry for not specifying, but I meant Toroids as in the electricity and magnetism part of physics, such as an inductor or a "round solenoid."

Thanks
 
A toroidal ferrite core with wire wound on it is called a choke in EE.
Try wikipedia (and an old PC power supply); do you understand induction?
 
I understand induction, but I can't think of any real-life applications of when a toroid would be useful.
 
Hmm, well, choke coils are fairly ubiquitous, see what a choke does and see if it looks useful.
 
Triangulum said:
I understand induction, but I can't think of any real-life applications of when a toroid would be useful.

An inductor blocks transmission of a fast changing signal such as external interference on a wire.
They are normally only called chokes when they are inductors in circuit.
 
It depends on the application, and frequency domain where the material can be powdered iron, or wound soft steel tape, or ferrite.

In small, bead form, on a wire, torroids block noise. Toroidal cores are even used in 60Hz transformers where a low profile is a requirement. Current transformers, antenna balums, and line filters are some uses. Way back when, square BH core material toroids were used to store data bits (core memory).

Packaged with a couple capacitors, or used discretely, they are commonly used as line filters.
 
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