Homemade Induction Coil

Written by scarlett gauthier
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Homemade Induction Coil
Inductors are used in various items, such as automotive electrical systems. (drosselspulen in der hand, induction coil image by Sascha Zlatkov from Fotolia.com)

Induction coils, more commonly known as inductors, are electrical devices that store electrical energy in a circuit by converting energy into a magnetic field. Inductors can be made as a single loop of wire or can consist of a wire coiled around a special core. They are often used as filters in power supplies. An inductor coil can easily be made from household items and an electrical wire.

Skill level:

Things you need

  • Toilet-paper tube
  • 2-feet of insulated electrical wire
  • Ruler

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  1. 1

    Cut a 2-foot piece of electrical wire and strip 1/2 inch of insulation from the ends of the wire.

  2. 2

    Wrap the wire tightly around the tube, leaving about 3 inches of overhang at the beginning of the tube. Use a ruler to be precise. The beginning part of the wire will be used as an electrical lead.

  3. 3

    Leave 3 inches at the end of the wire as well to be used as a second electrical lead for the inductor.

Tips and warnings

  • The toilet paper tube can be removed from the centre of the coil; however, it can be better to leave the tube in as this gives the coil something to hold onto, preventing it from falling apart.

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