What are inductor coils used for?
Inductors are typically used as energy storage devices in switched-mode power devices to produce DC current. The inductor, which stores energy, supplies energy to the circuit to maintain current flow during “off” switching periods, thus enabling topographies where output voltage exceeds input voltage.
What is the material used for inductance coil?
An induction coil consists of a central cylindrical core of soft iron on which are wound two insulated coils: an inner or primary coil, having relatively few turns of copper wire, and a surrounding secondary coil, having a large number of turns of thinner copper wire.
How inductance is formed in a coil?
Inductance is caused by the magnetic field generated by electric currents flowing within an electrical circuit. Typically coils of wire are used as a coil increases the coupling of the magnetic field and increases the effect. This effect is used in single coils or chokes.
Where do we use inductors?
Inductors are primarily used in electrical power and electronic devices for these major purposes:
- Choking, blocking, attenuating, or filtering/smoothing high frequency noise in electrical circuits.
- Storing and transferring energy in power converters (dc-dc or ac-dc)
What is inductor and its applications?
An inductor is defined as a passive component that is used in most electrical circuits to store energy in the form of magnetic energy when electric current flows through it. It is also known as the coil, choke, or reactor. It is a two-terminal electrical component that is characterized by its inductance.
How do you increase the inductance of a coil?
As well as increasing the number of coil turns, we can also increase inductance by increasing the coils diameter or making the core longer. In both cases more wire is required to construct the coil and therefore, more lines of force exists to produce the required back emf.
What wire is used to make an inductor?
2 (Alternating Current). There is special type of wire typically used for making inductors called magnet wire. For all intents and purposes, it looks very similar to regular wire and is measured using the same gauge system.
What makes a good inductor?
An inductor should have a high value of rated current so that it can operate in linear range over the entire load. Also, it should have low DC resistance to minimize losses and increase the efficiency of the regulator. It should also have a small size which is important for printed circuit boards (PCBs).
What type of cores are used in inductors?
Examples of core materials for inductors include silicon steel, iron powder and ferrites. Each of these different materials has different properties at different frequencies, temperatures and power levels. Cores can be fashioned by casting, machining or pressing.
What is an inductor coil?
An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it. An inductor typically consists of an insulated wire wound into a coil.
How is an inductor made?
An inductor is usually made from a coil of conducting material, like copper wire, that is then wrapped around a core made from either air or a magnetic metal. Small inductors can also be put onto integrated circuits using the same ways that are used to make transistors.
