Inductors

Inductor

passive component consisting of coils of insulated copper wire around a core made up of metal like iron that can be easily magnetised. it opposes that rate of change of current flowing through.

Inductance

Inductors resist or oppose changes of current but will easily pass a steady state DC current. This ability of an inductor to resist changes in current is called ___________ and is measured in Henry

• number of turns of wire

• material of the core

• shape and size of the core

• shape, size, and arrangement of the wire

factors affecting inductance

• Air Core

• Iron Core

• Ferrite Core

• Torroidal Core

• Laminated Core

different types of inductor cores

air core

type of core that have high frequency operation but low inductance

iron core

type of core that has low resistance and high inductance

ferrite core

type of core that is made up of non-conductive ceramic material for higher frequency operation.

torroidal core

type of core that reduces radiated emi and provides high inductance

laminated core

type of core that has high inductance with lower eddy current losses

• Coupled Inductors

• Multi-layer Inductors

• Molded Inductors

• RF Inductors

• Chokes

• Surface Mound Inductors

types of inductors

coupled inductors

a type of inductor that share a magnetic path and influence each other

multi-layer inductor

a type of inductor that has layers of coiled wire that is wound around a central core.

molded inductors

a type of inductor that are molded into a plastic or ceramic housing

RF inductors

type of inductors designed to operate at high frequencies. have a higher resistance and lower current rating

chokes

a type of inductor that is designed to block high frequency pulses while letting lower frequency pulse through.

surface mount inductors

a type of inductor that is small in size and footprint, an essential element in the mobile and portable electronic designer’s component toolbox.

variable inductor

type of inductor that can adjust the inductance value