Magnetization Dynamics: Modeling the Ferrite Core of a Joule Thief

AI Thread Summary
The discussion centers on modeling the magnetization dynamics of the ferrite core in a Joule thief project. The goal is to understand the magnetization process to accurately predict flux changes and induced emf. The user seeks resources or explanations regarding the necessary mathematical concepts, as previous studies focused on linear media and post-magnetization behavior. Recommendations include exploring introductory physics texts that cover the relationship between magnetic flux density (B) and magnetic field strength (H) in ferromagnetic materials. Understanding these principles is crucial for the project's success.
OGrowli
Messages
12
Reaction score
0
I'm working on a project that involves a Joule thief. I need to model the magnetization process of the ferrite core of the toroid. With that I will be able to get an accurate picture of the flux change, which I can use to predict the induced emf based on the characteristics of the system. Everything I learned as an undergrad either involved linear media, or just the behavior of a material after magnetization has happened. I need to learn about the magnetization process in ferrous materials. Can anyone either explain the necessary math or point me in the direction of reading materials that will give me a mathematical overview of these processes? thank you very much.
 
Physics news on Phys.org
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
View full post »

Thread 'Why measure the speed of light in one direction?'

It may be shown from the equations of electromagnetism, by James Clerk Maxwell in the 1860’s, that the speed of light in the vacuum of free space is related to electric permittivity (ϵ) and magnetic permeability (μ) by the equation: c=1/√( μ ϵ ) . This value is a constant for the vacuum of free space and is independent of the motion of the observer. It was this fact, in part, that led Albert Einstein to Special Relativity.
View full post »

Similar threads

I Iron core barely boosting field strength
Replies
43
Views
6K
COMSOL simulation of a 3D Ferrite Bar Numerical Model For Magnetic Flux
Replies
5
Views
3K
Can Coax-Wound Coils Prevent Radiation in Ferrite Core Magnetic Circuits?
Replies
22
Views
2K
Magnetic Field Outside of Finite Solenoid Greater for Air-Core or Ferrite-Core?
Replies
6
Views
13K
Ferrite Cores on the output cable of a VFD
Replies
4
Views
6K
Inductance of Parallel Coils on an uncut toroid magnetic core
Replies
13
Views
3K
Force on a ferrous object inside a non-uniform magnetic field
Replies
1
Views
2K
Magnetic induction/ goal ref technology
Replies
4
Views
2K
How Does Core Material Affect EMF Induction in Guitar Pickup Coils?
Replies
5
Views
7K
Equation for Permeability of an electromagnetic core
Replies
2
Views
5K

Hot Threads

Recent Insights

Back
Top