The schematic symbol for an inductor, like the capacitor, is quite simple, being little more than a coil symbol representing the coiled wire. These design options all have an effect on the performance and characteristics of inductors.
Sometimes the core of an inductor will be straight, and other times it will be joined in a loop (square, rectangular, or circular) to fully contain the magnetic flux. Others wrap the wire around a solid core material of some type. Some inductors are formed with wire wound in a self-supporting coil. This shape creates a stronger magnetic field than what would be produced by a straight wire. Inductors are components designed to take advantage of this phenomenon by shaping the length of conductive wire in the form of a coil. Whereas an electric field flux between two conductors allows for an accumulation of free electron charge within those conductors, a magnetic field flux allows for a certain “inertia” to accumulate in the flow of electrons through the conductor producing the field. Just as the type of conducting material dictates that ’s specific resistance to electric current, the type of material occupying the space through which a magnetic field force is impressed dictates the specific opposition to magnetic field flux. The amount of field flux that will develop in space is proportional to the amount of field force applied, divided by the amount of opposition to flux. Field flux can be opposed in space, just as the flow of electrons can be opposed.
Field force and flux are roughly analogous to voltage (“push”) and current (flow) through a conductor, respectively, although field flux can exist in totally empty space (without the motion of particles such as electrons) whereas current can only take place where there are free electrons to move. The field flux is the total quantity, or effect, of the field through space. The field force is the amount of “push” that a field exerts over a certain distance.
Fields have two measures: a field force and a field flux. Like, magnetic fields can occupy completely empty space, and affect matter at a distance. Magnetic fields effect the alignment of electrons in an atom, and can cause physical force to develop between atoms across space just as with electric fields developing force between electrically charged particles. Whenever electrons flow through a conductor, a magnetic field will develop around that conductor. Zenkner, H.: Trilogy of Inductors, 2nd extended edition 2002. Sound simple? Well, inductors are - but those coils of wire can do some pretty cool things! How Inductors Work.
Inductors are little more than coils of wire.
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