What is Inductor?
An inductor is defined as a passive component used in most electrical circuits to store energy in the form of magnetic energy as current flows Also known as a coil, choke or reactor.
It is a double piece of electronics with a means of access. Inductance is defined as the ratio of voltage to rate of change of current. The SI induction unit is Henry named after Joseph Henry who was an American scientist.
- Tuning circuits
- Store energy in a device
- Induction motors
- Ferrite beads
- Inductors used as relays
With the help of inductors, the tuning circuits can select the desired frequency. Capacitor types with inductors are used in various electronic devices such as radio tuning circuits, televisions to aid frequency shifting and selectivity in many frequency channels.
Inductive proximity sensors are very reliable in operation and as a non-contact sensor. Inductance is the main mechanism behind it in which the field in the coil will oppose the flow of electricity. Traffic lights use a proximity sensor system to determine traffic density.
Inductors can only store energy for a short period of time because the energy stored as a magnetic field will be gone when the power supply is turned off. The use of an inductor is seen in computer circuits where current can be switched.
In induction motors, the shaft rotates in the motor due to the presence of a magnetic field produced by alternating current. The speed of the motor can be set according to the frequency of the source current. The consumption of inductors can be controlled by motor speed.