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What is the magnetic force of an electromagnet related to?

2024-10-09

What is the magnetic force of an electromagnet related to.jpg

Part  1  How to calculate the force of electromagnet ?

First, we need to understand how the magnetism of an electromagnet is generated. The magnetic field of a solenoid with electricity should be B=u0*n*I according to the Biot-Savart law. B=u0*n*I , B is the magnetic induction intensity, u0 is a constant, n is the number of turns of the solenoid, and I is the current in the wire. Therefore, the size of the magnetic field is determined by the current and the number of turns of the solenoid!

Part 2 :  Know The construction of electromagnet and the working principle?

Electromagnet or solenoid are general terms for all types of electromagnetic actuators.

Basically, electromagnets or solenoids are devices that generate a magnetic field by means of an energized coil, guiding it through suitable iron parts with air gap. Here, magnetic poles are created between which a magnetic force of attraction, the magnetic force, prevails.

If no current is applied to the coil, no electromagnetic force is generated; if the coil current is regulated, the magnetic force can be regulated. Depending on the construction of the iron parts, the magnetic force is used to carry out linear or rotary movements or to exert holding forces on components, decelerating or fixing them.

Part 3, keys affect the magnetic force?

There are five main factors that affect the magnetic force of an electromagnet:

3.1  it is related to the number of turns of the solenoid coil wound on the inside bobbin. The number of turns of the solenoid coil can be changed by wiring to adjust the size of the magnetic force. 

3.2  It is related to the electric current passing through the conductor. The current passing through the conductor can be changed by sliding the rheostat, and the current can also be increased by increasing the number of power. More power, more strong.

3.3  the inside iron core will affect the force of solenoid also. The magnetism is strong when there is an iron core, and weak when there is no iron core;

3.4. It is related to the soft magnetic material of the conductor's iron core.

3.5 The cross-sectional connection of the iron core will affect the magnet force also.

Summery: when create a solenoid actuator, the force and the lifespan as well as the specification, if you want to make your own solenoid actuator, our professional engineer would like to communication and talk with you for professional suggestion.