Definition and Function inductor and its types – In addition to Resistors and Capacitors, inductors are also components of Passive Electronics that are often found in Electronic Circuits, especially in circuits related to Radio Frequencies. Inductor or also known as Coil is a Passive Electronic Component consisting of a wire winding arrangement that forms a coil. Basically, inductor can cause a magnetic field if fed by electric current. The magnetic field that is generated can store energy in a relatively short time. The basis of an inductor is based on Faraday’s Law of Induction.
The inductor or coil ability to store magnetic energy is called inductance whose unit unit is Henry (H). Henry’s units are generally too large for inductor components contained in the Electronics Circuit. Therefore, units that are derived from Henry are used to express the inductance capability of an inductor or coil. Henry’s derived units include milihenry (mH) and microhenry (μH). The symbol used to symbolize inductors in the Electronic Circuit is the letter “L”.
Reas also Definition of Resistor and Their Types
Inductor symbol
Here are the inductor symbols:
The inductance value of an inductor (Coil) depends on 4 factors, including:
- The number ofcoils, the more the coils the higher the inductation
- Inductordiameter, the larger the diameter the higher the inductance
- Core Permeability,which is a core material used such as air, iron or ferrite.
- The size of the inductorlength, the shorter the inductor (coil) the higher the inductance.
Inductor (Coil)
Based on the shape and material of the core, inductors can be divided into several types, including:
- Air Core Inductor – Using Air as Its Core
- Iron Core Inductor – Using Iron Material as The Core
- Ferrite Core Inductor – Using Ferrite Materials as The Core
- Torroidal Core Inductor – Using an O Ring-shaped Core
- Laminated Core Induction – Using a Core consisting of several layers of metal slabs affixed in parallel. Each metal slab is given an insulator.
- Variable Inductor – Inductor whose inductance value can be adjusted according to desire. The core of the Variable Inductor is generally made of rotatable ferrite material.
Inductor Function (Coil) and Its Application
Inductor or Coil functions include being able to store electric current in a magnetic field, filtering (Filter) Certain frequencies, holding back and forth current (AC), forwarding direct current (DC) and vibration generation and multiplying voltage.
Based on the above function, inductor or coil is generally applied:
- As a Filter in a Network related to Frequency
- Transformer
- Electric Motor
- Solenoid
- Relay
- Speaker
- Microphone
Inductors are often referred to as Coils, Chokes or Reactors.
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