Coil Physical Properties Calculator

Introduction of Coil Physical Properties Calculator

This Coil Calculator is a professional and easy-to-use electrical tool for electrical engineers and designers. This online Coil inductance calculator can help you to calculate physical properties, including turns/winding, number of windings, coil diameter, resistance and voltage & power at rated current through entering the values of wire diameter, number turns, Bobbin Length, Bobbin Diameter and Rated DC Current.

What is an Electric Coil?

An electric coil, also known as an electromagnetic coil, is an electrical conductor made up of a number of conductive wires wrapped around a cylindrical, toroidal, or disk-shaped ferromagnetic core. Electric coils are one of the most basic types of electronic components, providing inductance in an electrical circuit, which is an electrical property that resists current flow.

The gauge of the wires, coil diameter, wire lengths, number of loops, and kind of core material, which might be air, iron, steel, ceramic material, or iron-based formless tape, all affect the price of electrical coils. The permeability of the material, which is the capacity of the core to produce a magnetic field, determines the materials used for the core of an electric coil.

Electric motors, generators, inductors, and electromagnets all use electric coils. They act as a conductor of electricity, allowing electrical current to flow effectively to electric motors. They are a constant and dependable induction approach.

Types of Electrical Coils

The type of electrical coil to employ is decided by the project's requirements, which include whether a DC or AC electric motor is required. Electric current interacts with a magnetic field in all electric coils, regardless of kind. Motors, generators, transformers, magnetics, and sensors all require different sorts of coils. Coils are used in a variety of applications in electronics, electricity, and magnetism. A quick summary of the many types of coils may be found below.

Bobbin Wound Coils

A bobbin is a coil of magnetic wire that has been coiled around a plastic core. Plastic cores are available in a variety of diameters, and bobbin wrapped coils can be impregnated, molded, or taped to satisfy the needs of medical devices, sensors, relays, and automobiles.

Choke Coils

Choke coils have a high inductance and low resistance. They're suitable for both AC and DC currents. Choke coils are designed to block AC while allowing DC to pass through. Choke coil resistance rises as the frequency of the current rises.

Self-Supported Coils

When there isn't enough area for a bobbin or core, this type of coil is employed. They have better magnetic capabilities since they may be put closer to the metal in the circuit. Clutches, magnetic locks, and audio circuitry all utilise them.

Encapsulated Coils

Encapsulated coils, also known as molded coils, are encased in a durable temperature-resistant thermoplastic that protects them against moisture, corrosive chemicals, vibration, explosions, and hostile working conditions. Encapsulated coils have more insulation and dielectric qualities due to their design.

Tape Wrapped Coils

Taped wrapped coils are intended for use in mild to moderately harsh conditions that are free of chemicals and solvents. A sealing tape is used to protect the coil from the elements, dirt, and vibration. Tape wrapped coils are a cost-effective option since they are less expensive than other varieties.

Toroidal Coils

Inductors and transformers both employ toroidal coils. Wrapping a wire around a circular core with an open center creates the coil. A toroidal coil's form provides for magnetic field confinement, minimizing the amount of field leakage outside the coil. They're employed in a wide range of sectors, including transportation, audio, and power supply.

Tesla Coil

A Tesla coil is a resonant transformer powered by a radio frequency oscillator that converts high voltages to low voltages. It's made up of two open electric circuits linked by a spark gap. Tesla coils should be composed of copper wire for the optimum performance.

Transformer Coils

A transformer coil's function is to convert voltage from one electrical circuit to another. Voltage may be reduced or increased using transformers. It's a passive device that steps voltage levels up or down between different circuits using electromagnetic induction.

Voice Coils

A voice coil is composed of a bobbin, wire, collar, adhesives, and lead-out wire. The diameter of the voice coil gap determines the bobbin size. Electrical impulses are converted into linear magnetic energy by a voice coil. A voice coil was first used to move the cone of a speaker. Its use has broadened to include the movement of enormous masses at modest speeds. The Lorentz force is the force that exists between the magnetic field of the voice coil and the electric current flowing through it.

High Voltage Coils

In situations where the voltage is higher than what is deemed safe, high voltage coils are employed. The use of the term "high voltage" implies that the current is potentially hazardous owing to the possibility of sparks or electric shock. For AC circuits, the classification is 1000 volts, while for DC circuits, the classification is 1500 volts. Ignition and Tesla coils are the two forms of high voltage coils.

Ignition Coils

To fire a spark plug, ignition coils convert lower voltage electricity to higher voltage. They feature main and secondary coil windings, similar to an electric transformer. The automotive sector is the most prevalent and well-known application of ignition coils.

Impregnated Coils

The empty space in the winding of an impregnated coil has been impregnated with resin or another substance to minimize conductor motion. The substance used in the procedure is intended to seal the holes in the coil's construction. They have a low viscosity, a long service life, strong dielectric strength, and can withstand severe temperatures.

Solenoid Coils

A conductive core with a hollow center and wire wrapped around the hollow center makes up a solenoid coil. As current runs through the solenoid coil, it produces a magnetic field, which generates magnetic potential, which is then converted to magnetic force for mechanical motion. A metal core can sometimes cause a hydraulic valve to open or close.

Coil Formula

For force calculation using example below: Enter "Number of Turns", "Bobbin Length" can be anything except 0, enter "Bobbin Diameter (D)" this is the iron core diameter, enter "Rated Current (I)", enter "Gap Distance (G), then click calculate. This will give you the Electromagnetic Force pulling the Arm to the Iron Core of the coil. The equation used is: F = (N x I)^2 x K x A / (2 x G^2) N = the number of turns in the solenoid I = the current, in amperes (I) A = the cross-sectional area of the magnet in meters squared G = the distance or gap, in meters, between the coil and the piece of metal K = 4π x 10^-7 tesla meter per ampere (Tm/A). This is a universal constant in nature and serves as the reference point for permeability in numerous electromagnetism-related calculations.

Wire Gauge Chart