INDUCTORS

Inductors are a basic building block of electronics. They have many different applications. They are primarialy used in frequency related circuits. They consist of a coil wrapped around just about anything; air, iron, or ceramics. They also come in different shapes, a Toroid is a dougut shape, a cylinder or a transformer shape. When a voltage is applied to the coil, a magnetic field forms around the inductor. When this voltage is DC the inductor just acts like a small resistor. When the voltage is AC the inductor tries to turn that AC into DC. When the voltage is taken away from the coil. The magnetic field collapses inducing a voltage back into the circuit. It is almost like the inductor resists change in voltage. The inductance is measured in Henrys (H).

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