Inductor

Definition of Inductor:

Inductor is a device which can store energy in the form of magnetic field. Inductor opposes a sudden change in the flow of current. It is a component whose physical construction is simply a coil of ire .  For this reason inductors are ofter called coils.  The function of an inductor is to provide opposition to a changing or varying current.

 Whenever a current change occurs within the coil windings, a voltage is induced across the ends of the coil.  The polarity of the induced voltage is such that it opposes the current change occurring withing the coil / inductor. In more general terms, inductors are the opposite of capacitor, in that they are able to pass a dc current and block an ac current.  The basic unit of inductance is the Henry (H).

Tips:

Like resistors and capacitors, inductors may be either fixed or variable. Several different types of inductors are shown below . When inductors are color coded, they can be distinguished from resistors by the fact thay the fact that the first color band is always a wide silver band.  The variable inductors frequently used in modern electronic equipment are adjusted by tuning a magnetic slug in and out of its core.

 A Transformer is another component that can technically be defined as a inductor, because it is constructed by placing two coils in close proximity to each other.  One of the main application of a transformer is to step up or step down an ac voltage.  Transformers cannot step up or step down a dc voltage.

Inductor, definition of inductor, what is inductor, example of inductor, free electronics tutorials

Inductors

 

 

 

 

 

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