Connect with us

What are those metal donuts that wires wrap through / around for?

Discussion in 'Electronic Basics' started by [email protected], Apr 13, 2005.

Scroll to continue with content
  1. Guest

    I have no idea what these things are called so I don't know what
    terms to search on to research them.

    Anyway, it looks like a metal donut that a paired set of wires wrap
    around and through multiple times.

    Questions:

    1. What is it called?
    2. What purpose does it serve?

    Thanks

    -Marcus
     
  2. BobG

    BobG Guest

    1. What is it called?
    ============================
    1) ferrite bead
    2) Its an inductor. Blocks hi frequencies, passes lo frequencies
     
  3. ME

    ME Guest

    Also could be a transformer.

    Depending on how they are wired.

    Step up
    Step down
    or isolation transformer.
     
  4. It can also be called a _core_ for a toroid inductor, or a core for
    a transformer, if more than one winding is used.

    An information page for beginners about beads, toroid cores,
    transformer cores, scroll down to see pictures:
    http://sound.westhost.com/xfmr2.htm

    This is one of the most known makers of toroid cores
    http://www.amidoncorp.com/product.htm
     
  5. dB

    dB Guest

    Or a transformer.
     
  6. Guest

    Thank you all for your responses. It was exactly what I was looking
    for.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-