Inductors - diyAudio
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What is an Inductor?

An inductor is basically a coil of conductive material (e. g. copper wire) wrapped around a core material.

Inductors store electrical energy in their magnetic field and release it when there is not enough energy to sustain that field.

Inductors block higher frequencies and will allow lower frequencies to pass, depending on how they are used.

They are typically used in power supplies as RF chokes/filters and in radio equipment.

Coil Forms

Coil forms are simply objects to wind a coil around. Using a coil form allows you to wind air coils without trying to wind a coil onto air. :)

Core Materials

Powdered iron
Wax - usually a sponge soaked in wax.
Resistor - Class B/AB amps usually have a 10-ohm resistor with a number of turns around it. Don't ask me, I don't know why (a hint for fellow editors).


Solenoid - just a cylindrical coil of wire.
Toroid - wound on a ring-shaped core.

Created by keantoken, 28th November 2009 at 07:35 AM
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