Inductor Symbols -Solenoid, Chock and Coils Symbols

Electrical Technology

Inductor Symbols – Coils and Choke Symbols

Inductor & Coils Symbols

Generic Fixed InductorInductor Symbols

This is the symbols used for representing a generic Inductor whose inductance value is fixed. An inductor is also known by many names such as coil , choke etc. stores energy inside magnetic field.

Variable InductorVariable inductor Symbol

This type of inductor has variable inductance. Its inductance can be changed during the operation of the circuit such as in radios.

Step Variable InductorStep variable inductor Symbol

The inductance of such variable inductor can be varied in steps rather than in a continuous manner. They have designed (fixed) value of resistance per step.

Inductor with polarityInductor with polarity Symbol

Such inductors have a dot on one side of its terminal. The dot convention of the inductor shows the direction of the current entering the inductor & they are used while coupling inductors for maximum mutual inductance.

Iron Core InductorIron Core inductor Symbol

This is a type of inductor whose core is made up of iron (Ferromagnetic material). The iron core increases the inductance of the inductor due to its high magnetic permeability.

Ferrite Core InductorFerrite core inductor Symbol

As the name suggests, these inductors have ferrite core. The ferrite material provide high magnetic permeability as well as low electrical conductivity to reduce the losses inside the core. They are used in high frequency applications.

Variable Ferrite Core InductorVariable Ferrite Core inductor Symbol

It is a type of ferrite core that has variable inductance. The inductance of such inductors is varied by screwing in & out the core inside the coil.

Preset Ferrite Core InductorPreset Ferrite Core Inductor Symbol

The preset inductors are also variable inductor but there inductance is varied at the time of manufacturing or tuning a circuit. Their inductance is not changed during normal use of the circuit.

Shielded InductorShielded inductor Symbol

Such type of inductors core is designed to contain its magnetic field inside. There is little to know leakage flux that could interfere with other nearby components. These are used in compact PCBs where space managing is the utmost requirement.

Electromagnet SolenoidElectromagnet Solenoid Symbol

A solenoid is a cylindrical coil made of a conductor which produces magnetic field when electricity passes through it. It is also known as Electromagnet.

Electromagnetic Deflection CoilElectromagnetic deflection coil Symbol

Such type of coil is used in CRT (cathode ray tube) where it produces the magnetic field to deflect or change direction of the electron beam both vertically and horizontally.

Bifilar InductorBifilar inductor Symbol

The coil of bifilar inductor is made up of two conductors running in parallel with each other. The winding conductors can be antiparallel (reverse direction of current) to cancel the magnetic field produced by each other. They can be in parallel to double fold the magnetic field produced by the coil.

VariometerVariometer Symbol - Variable Inductor

The variometer is a variable inductor that provide a continuous change in inductance by moving the two coils inside one another that are connected in series.

Saturable Core InductorSaturable core inductor Symbol

This type of inductor is deliberately designed to saturate its core to decrease its inductance & inductive reactance. This results in high AC current carrying capability.

Electric Motor InductorElectric motor inductor Symbol

It is the graphical representation of the coil (winding) used inside AC machines which converts the electrical energy into mechanical energy through induction.

Analog Delay LineAnalog Delay Line Coil Symbol

It is a coil designed to produce a time delay or phase change in the analog signal. Just like digital buffers are used to produce time delay in digital signal.

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