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## Magnetic Permeability |

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permeability , permittivity and permeability , permittivity permeability , permeability cst

permeability , permittivity and permeability , permittivity permeability , permeability cst

29 Threads found on edaboard.com: **Magnetic Permeability**

B is proportional to the magnetising current, not the load current, the two add vectorially...
For ferro**magnetic** materials we should't consider it **magnetic** **permeability** as linear.
At least within small ranges.

Power Electronics :: 05-30-2016 16:16 :: andre_teprom :: Replies: **33** :: Views: **2812**

Hi guys,
I need help with a problem I have as part of my study. I'm looking to calculate the **magnetic** field strength required to separate a moving polystrene microsphere which is coated with iron oxide. I know the following;
1. The force in newtons required to separate the sphere
2. The mass of the sphere
3. The velocity of the sphere is tra

Mathematics and Physics :: 07-22-2015 20:35 :: crossengineer :: Replies: **4** :: Views: **1295**

Hello,
I would like to vary the **magnetic** **permeability** of a cored coil using an electromagnet, taken out from a relay.
I want to be able to apply from very small magnetization to the coil, up to quite large, so I need high magnetization dynamic range (if such term exist).
For that purpose:
1. What types of relays should I best choose?
2. What vol

Electromagnetic Design and Simulation :: 05-22-2015 11:36 :: neazoi :: Replies: **2** :: Views: **642**

I suppose you changed the Henry value of an inductor temporarily?
This concept could be useful. A fixed inductor becomes variable.
I may resemble the concept of the **magnetic** amplifier. By sending DC current through an auxiliary winding, you can alter how much current goes through the main winding.
However if the inductor contains a metal core, th

RF, Microwave, Antennas and Optics :: 01-15-2015 05:16 :: BradtheRad :: Replies: **13** :: Views: **1790**

Hi Mamase,
You can artificially define a metamaterial by applying the reported relative dielectric permittivity and **magnetic** **permeability** to a material used in your design.
On the other hand, you can simulate a metamaterial resonator (e.g. Spiral o SRR) in a periodic unit cell, and try to retrieve its effective material properties from the S-param

Electromagnetic Design and Simulation :: 05-14-2014 08:56 :: perejferrer :: Replies: **7** :: Views: **2503**

Hello everyone,
I am interested in determining the maximum **magnetic** flux that is entering my core in its steady-state operation. It seems that for the calculation, I need the **permeability** of my core. The problem that I have is that I am not so sure of what the **permeability** data in datasheets are. For instance in this page, www.cwsbytema

Power Electronics :: 11-05-2013 20:24 :: kanmaedexandzelbladex :: Replies: **1** :: Views: **531**

Do you really mean **permeability**? That is a **magnetic** property and so the value is probably unity i.e. the same as air. If you mean permittivity then it depends on the ceramic. For example, alumina is 9.3-11.5
Keith.

Elementary Electronic Questions :: 01-07-2013 09:27 :: keith1200rs :: Replies: **2** :: Views: **4153**

Hi. I'm working with an inductor modeling with **magnetic** core by HFSS.
In material menu, it has following properties,
Relative Permittivity
Relative **permeability**
Bulk Conductivity
Dielectric Loss Tangent
**magnetic** Loss Tangent
Magnteic Saturation
Lande G Factor
Delta H
And my **magnetic** core has all the same (...)

Electromagnetic Design and Simulation :: 11-27-2012 13:35 :: pleezer :: Replies: **0** :: Views: **1188**

The ferrite's Al (nH for one turn) depends on Douter/Dinner, and of course core heigth and **permeability** So it is not just the diameter.
A core with more volume can store more **magnetic** energy, so can handle more current before going into saturation.
If you have an existing design that uses the smaller core, but you have a larger one. Try t

Professional Hardware and Electronics Design :: 09-25-2012 12:25 :: WimRFP :: Replies: **5** :: Views: **1067**

The usual gap calculation doesn't use core area at all, just effective length and **permeability**, see Ferroxube data book. An accurate calculation would need to consider both acutal gap area and stray flux. At the end you have to refer to a 3-D **magnetic** simulation. Do you really need it?
Curiously PQ50 isn't offered as a gapped core by Ferroxcube.

Power Electronics :: 09-23-2012 11:06 :: FvM :: Replies: **18** :: Views: **3036**

I have a Fluke PM 6306 RLC meter and I was wondewring how can I measure inductance of a **magnetic** sheet? Do I need an extra fixture to place my sample around it? I have calculated permitivity by placing my sample between 2 metal plates and measuring capacitance. I need to measure inductance in order to calculate **permeability**.

Electromagnetic Design and Simulation :: 11-14-2011 20:35 :: pf9 :: Replies: **0** :: Views: **907**

Stainless steel often has a relative **permeability** close to 1 , so it won't shunt **magnetic** fields. It will shield the signal a bit due to eddy currents, but as long as the steel is thinner than its skin depth, some signal will still get through.

RF, Microwave, Antennas and Optics :: 08-11-2011 19:28 :: mtwieg :: Replies: **3** :: Views: **904**

Hi,
I am modelling high power waveguide loads on HFSS and CST. One material I need to model is silicon carbide. I cannot find anywhere a resourse that has the **magnetic** loss tangent and **permeability**. Also anything I find for the permittivity and electric loss tangent seems to contradict other sources. If anyone has or knows where I could find

RF, Microwave, Antennas and Optics :: 07-29-2011 15:16 :: JHS504 :: Replies: **1** :: Views: **1252**

Oska,
Be care that inductance is not the only electrical pnenomen concerned at this kind of inductors.
Saturation **magnetic** efect is also welcome at this case; so, high-**permeability** core must be considered.
+++

Elementary Electronic Questions :: 05-30-2011 12:07 :: andre_teprom :: Replies: **2** :: Views: **1668**

How will the core with relative **permeability** Mu affect the **magnetic** dipole moment of a solenoid with current? Will it just increase Mu times?

Mathematics and Physics :: 09-06-2010 19:16 :: htg :: Replies: **0** :: Views: **2232**

Dear all,
I would like to simulate coupled coil, for example 3D solenoids or planar inductors.
As the received power depends on numerous parameters (number of turns, distance, symmetry, frequency, **permeability**, even unconsidering non-linear phenomenoms), so **magnetic** field produced and received, simulation seems useful.
Do you recommend som

Electromagnetic Design and Simulation :: 09-03-2010 12:40 :: chromatik :: Replies: **2** :: Views: **1889**

To achieve high dynamic, an audio transformer needs a **magnetic** shield, typically a box made of a high **permeability**
material, e.g. "?-metal". If your device hasn't an effective shield, it can't be used in an enviroment of interfering AC **magnetic**
fields. The most severe problem are mains transformers, but I guess pulsating ground currents (...)

Analog Circuit Design :: 03-22-2010 19:46 :: FvM :: Replies: **1** :: Views: **1352**

hi
Is there any anisotropic material in optical frequency which its "**permeability** tensor" can be changed by external electric or **magnetic** field??
thanks

Electromagnetic Design and Simulation :: 08-25-2009 14:34 :: mohsen_b_p :: Replies: **1** :: Views: **1670**

you can calculate the real and imaginary parts of permittivity/**permeability** in matlab using your drude/lorentz whatever model. and then you need to calculate the tangent delta electric/**magnetic** using these real and imaginary parts. you need to write these parameters in a data file in matlab, like: frequency - real(eps) and another file frequency -

Electromagnetic Design and Simulation :: 08-19-2009 16:33 :: Zottiri Kusuta :: Replies: **4** :: Views: **5351**

Sorry I have no specific advice regarding your particular problem.
I've seen this happen alot with this software. Sometimes it's understandable; for example, maybe you have some small feature that would be expected to have a relatively large effect, e.g., a small air gap in a high **permeability** **magnetic** core, and it just doesn't get meshed proper

Electromagnetic Design and Simulation :: 07-18-2009 06:04 :: jpsmith123 :: Replies: **6** :: Views: **2569**

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