Dependence of loss factor tan(δ) upon H in MnZn ferrites

  • A
  • Thread starter H Tomasz Grzybowski
  • Start date
  • Tags
    Loss
In summary, the conversation discusses the use of the ηB constant as a hysteresis material constant and the question of the limit of applicability for the formula Δ(tan(δ)) = ηB⋅ΔB⋅μe. The person wants to use ferrite with a μi value of 2000 and is asking for the maximum H value where tan(δ) will increase linearly with B. They also request a link to ferrite data sheets for further reading.
  • #1
H Tomasz Grzybowski
12
0
There is ηB constant given as a hysteresis material constant.
But there is the question: what is the limit of applicability
of the formula Δ(tan(δ)) = ηB⋅ΔB⋅μe?
In particular I think I want to use ferrite with μi = 2000 or so.
Up to what H value will tan(δ) increase linearly with B ?
 
Physics news on Phys.org
  • #2
H Tomasz Grzybowski said:
There is ηB constant given as a hysteresis material constant.
But there is the question: what is the limit of applicability
of the formula Δ(tan(δ)) = ηB⋅ΔB⋅μe?
In particular I think I want to use ferrite with μi = 2000 or so.
Up to what H value will tan(δ) increase linearly with B ?
Can you post links to the ferrite datasheets that you've been reading to try to answer this question? Thanks.
 
  • #3
Here is a link to ferrite data sheet: http://www.cosmoferrites.com/Downloads/Alnh/CF139.pdf
 

Related to Dependence of loss factor tan(δ) upon H in MnZn ferrites

1. What is the relationship between loss factor tan(δ) and H in MnZn ferrites?

The loss factor tan(δ) is a measure of the energy dissipation in a material, and it is directly related to the magnetic properties of MnZn ferrites. As the magnetic field strength H increases, the loss factor also increases due to the presence of domain wall motion and eddy current losses. This means that the loss factor tan(δ) is dependent on H in MnZn ferrites.

2. How does the dependence of loss factor tan(δ) on H affect the performance of MnZn ferrites?

The dependence of loss factor tan(δ) on H has a direct impact on the performance of MnZn ferrites. It can affect the efficiency of devices that use these ferrites, such as transformers and inductors. High loss factor tan(δ) values can result in increased heat generation and decreased power transfer efficiency.

3. Are there any other factors that can influence the dependence of loss factor tan(δ) on H in MnZn ferrites?

Yes, there are several other factors that can affect the dependence of loss factor tan(δ) on H in MnZn ferrites. These include temperature, frequency, and the composition and microstructure of the ferrite material. These factors can all impact the magnetic behavior of the material and, in turn, the loss factor tan(δ).

4. How can the dependence of loss factor tan(δ) on H be measured in MnZn ferrites?

The dependence of loss factor tan(δ) on H can be measured using a variety of experimental techniques, such as impedance spectroscopy and vibrating sample magnetometry. These techniques involve applying varying magnetic fields to the ferrite material and measuring the resulting changes in the loss factor tan(δ).

5. Is the dependence of loss factor tan(δ) on H in MnZn ferrites a reversible or irreversible process?

The dependence of loss factor tan(δ) on H in MnZn ferrites is a reversible process. This means that the loss factor tan(δ) will decrease as the applied magnetic field H decreases, and it will increase as H increases. However, there may be hysteresis effects present, meaning that the loss factor tan(δ) may not follow the same path during the increasing and decreasing field cycles.

Similar threads

Single Phase Transformer Losses -- Hysteresis, Eddy Current Constants
    • Electrical Engineering
Replies
4
Views
3K
I Statics: When the reactions depend on the displacements
    • Mechanics
Replies
5
Views
906
I The far reaching ramifications of the work-energy theorem
    • Classical Physics
Replies
31
Views
2K
I Optimization problem with multiple outputs: impossible?
    • General Math
Replies
6
Views
1K
I Atmospheric Density vs Altitude in an O'Neil Cylinder
    • Classical Physics
Replies
1
Views
670
Egg tossing crime -- From what location was the egg thrown?
    • Introductory Physics Homework Help
Replies
14
Views
2K
How to calculate potential traction loss on a haul road
    • Engineering and Comp Sci Homework Help
Replies
3
Views
3K
What does "limit of zero pressure" mean for ideal gas temperature?
    • Chemistry
Replies
14
Views
2K
I Some notes on stochastic physics
    • Classical Physics
Replies
0
Views
322
Internal energy pressure dependence
    • Mechanics
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top