Iron Core Solenoids: Proportions & Magnetic Field Effects

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In summary, iron core solenoids have equations that only hold true when the proportion of the coil width is not greater than the iron core diameter. When these proportions are exceeded, the magnetic field properties experience a drastic shift known as magnetic saturation.
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mapache
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Hi, I've been trying to learn about iron core solenoids and I'm having trouble finding information on a concept (probably obvious but I'm new to this). I've been looking at the equations for iron core solenoids online, and it's alluded to that these equations only hold true when the proportion of the solenoid coil width isn't greater than the iron core diameter or something like that? Is this correct? Is there some "drastic shift" in the magnetic field properties that is going on when these proportions are exceeded? I'm hoping someone can enlighten me and point me in the right direction for further study.
Thanks
 
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  • #2
Yes, it is called magnetic saturation.
 

FAQ: Iron Core Solenoids: Proportions & Magnetic Field Effects

What is an iron core solenoid?

An iron core solenoid is an electromechanical device that uses an iron core and a coil of wire to produce a magnetic field.

How is the magnetic field strength of an iron core solenoid affected by its proportions?

The magnetic field strength of an iron core solenoid is directly proportional to the number of turns in the coil, the current flowing through the coil, and the permeability of the iron core. It is inversely proportional to the length of the solenoid and the diameter of the iron core.

What is permeability and how does it affect the magnetic field of an iron core solenoid?

Permeability is a measure of a material's ability to become magnetized. The higher the permeability of the iron core, the stronger the magnetic field produced by the solenoid.

How can the magnetic field strength of an iron core solenoid be increased?

The magnetic field strength of an iron core solenoid can be increased by increasing the number of turns in the coil, increasing the current flowing through the coil, and using a higher permeability iron core. Additionally, decreasing the length of the solenoid and increasing the diameter of the iron core can also increase the magnetic field strength.

What are some practical applications of iron core solenoids?

Iron core solenoids have various practical applications, including in electromagnets, relays, speakers, and electric motors. They are also commonly used in devices such as doorbells, garage door openers, and magnetic locks.

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