Contents
What are the materials used for inductance coil?
An inductor usually consists of a coil of conducting material, typically insulated copper wire, wrapped around a core either of plastic (to create an air-core inductor) or of a ferromagnetic (or ferrimagnetic) material; the latter is called an “iron core” inductor.
How can you increase your inductance?
The inductance of a coil can be increased by placing a magnetic core of ferromagnetic material in the hole in the center. The magnetic field of the coil magnetizes the material of the core, aligning its magnetic domains, and the magnetic field of the core adds to that of the coil, increasing the flux through the coil.
What affects the inductance of a coil?
The greater the number of turns of wire in the coil, the greater the inductance. Fewer turns of wire in the coil results in lesser inductance. More coils of wires indicate a greater amount of magnetic field force for a given amount of coil current.
What causes the inductance of a coil to increase?
If the coil is wound onto a ferromagnetic core a greater inductance will result as the cores permeability will change with the flux density. However, depending upon the type of ferromagnetic material, the inner cores magnetic flux may quickly reach saturation producing a non-linear inductance value.
How does magnetic permeability affect the inductance of a coil?
CORE MATERIAL: All other factors being equal, the greater the magnetic permeability of the core which the coil is wrapped around, the greater the inductance; the less the permeability of the core, the less the inductance.
Why is the inductance of a coil of wire non linear?
However, depending upon the type of ferromagnetic material, the inner cores magnetic flux may quickly reach saturation producing a non-linear inductance value. Since the flux density around a coil of wire depends upon the current flowing through it, inductance, L also becomes a function of this current flow, i.
How to calculate the inductance of a solenoid coil?
Where: Φ is the magnetic flux, B is the flux density, and A is the area. If the inner core of a long solenoid coil with N number of turns per metre length is hollow, “air cored”, then the magnetic induction within its core will be given as: