Homemade Inductors

Discussion in 'The Projects Forum' started by Andy Larson, May 3, 2015.

  1. Andy Larson

    Thread Starter Member

    Mar 26, 2015
    I have a small stick of ferrite from a radio coil (I destroyed the orginal coil along time ago), two ferrite bead and two coils of magnet wire on plastic spools on a nail. I want to turn those in to homemade inductors, and possibly variable inductors. I know how to make inductors, ish. Please help
  2. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
  3. takao21203

    AAC Fanatic!

    Apr 28, 2012
    they are cheap and you'd not know the ferrite material.

    nails are only good for very low freqency or DC
  4. Søren

    Senior Member

    Sep 2, 2006
    It's very unclear what you want help with?

    If you wrap a single loop of wire (or even much less than a single mm of straight wire), you'll have a homemade inductance.

    Any PCB is brimfull of (unwanted mostly) parasitic inductance.

    A single turn of wire, with the rod moving from some short distance away to having the single turn coil at the middle of it, will be a variable inductance and is thus a correct answer to your question as asked :p

    But, I'm sure that wasn't what you wanted to hear, so what is it that you want?
    What values or range of values do you want to end up with?
    What's the end goal?