Caculate the Pull in LBS of Electromagnets

In summary, an electromagnet is a type of magnet created by running an electric current through a coil of wire, which creates a magnetic field that can be turned on and off. The pull strength of an electromagnet can be calculated using the formula P = (N*H^2*A)/(2*g^2) and is affected by factors such as the number of turns in the coil, magnetic field strength, core material, and air gap. The pull strength can be increased by adjusting these factors. Common applications of electromagnets include electric motors, generators, speakers, and MRI machines.
  • #1
burnit
53
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I need to caculate the Pull in LBS of Electromagnets, i am missing some information regarding this & maybe some brain cells also.

B (Flux Density)= Flux Lines/ Area

Pull in LBS= B x A / 72,000,000

Ok, how do i get B Flux Density in lines per sq/inch for the calculation.

I guess it has to do with core permeability--i am using Steel
Input voltage & Amps
Number of turns on the Coils

Some help would be greatly appreciated.
 
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  • #2


Forgot to ask, should the core of a DC Electromagnet be Laminated?

Thanks
 
  • #3


I would recommend gathering more information to accurately calculate the pull in LBS of electromagnets. The missing information includes the core material and its permeability, the input voltage and amps, and the number of turns on the coils. This information is crucial in determining the flux density (B) in lines per square inch. Without this information, it would be difficult to accurately calculate the pull in LBS. Additionally, it would be helpful to have a specific application or use case in mind so that the calculation can be tailored to the specific electromagnet being used. I would also suggest consulting with a physicist or engineer who specializes in electromagnetism for further assistance.
 

1. What is an electromagnet?

An electromagnet is a type of magnet that is created by running an electric current through a coil of wire. The coil of wire creates a magnetic field, resulting in a magnet that can be turned on and off.

2. How do you calculate the pull in pounds (lbs) of an electromagnet?

The pull in pounds of an electromagnet can be calculated using the formula P = (N*H^2*A)/(2*g^2), where P is the pull in pounds, N is the number of turns in the coil, H is the magnetic field strength in gauss, A is the cross-sectional area of the core in square inches, and g is the air gap in inches.

3. What factors affect the pull strength of an electromagnet?

The pull strength of an electromagnet is affected by the number of turns in the coil, the magnetic field strength, the cross-sectional area of the core, and the air gap between the magnet and the object it is attracting. The type of core material and the amount of current flowing through the coil can also affect the pull strength.

4. Can the pull strength of an electromagnet be increased?

Yes, the pull strength of an electromagnet can be increased by increasing the number of turns in the coil, increasing the magnetic field strength, or decreasing the air gap between the magnet and the object it is attracting. Using a core material with a higher permeability can also increase the pull strength.

5. What are some common applications of electromagnets?

Electromagnets are used in a variety of applications, including electric motors, generators, transformers, speakers, MRI machines, and magnetic levitation trains. They are also used in everyday items such as doorbells, telephones, and refrigerators.

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