The cross-sectional area of a B-H curve can be viewed as that magnetic materials "waste" energy


Reluctance is the magnetic equivelent of resistance. An easy way to follow through magentic cct is to treat Relecutance as electrical resistance and MMF as a Voltage source, then the usual law apply (voltage devider and all that)

Just remeber there is no such thing as a flux capacitor

Air-cored inductors cannot saturate for starters.
Now magnetic materials can, if you look at a B-H curve


you will see at the top and bottom the gradient has greatly reduced.
During the linear section you put so much H in (via Amp-turns) and you get so much magnetic flux.

When you start to saturate you have to start putting alot of H (ie alot of amps) for not alot of extra flux, ie it is pointless


here is a good site abt magnetics
http://www.magnetsales.com/Design/De...ame_dgbod2.htm

__________________
Nothing is impossible.
Once a problem is realised, the rest is just details

 

I could look at Chinese writing and ask, "What does this mean? What does that mean?"

Are you reading a book that is written in the foreign language called "high school chemistry, physics and Electronics"?

__________________
Uncle $crooge

 

lol You see I would be like that to, its just it is 6am here, I have been up since 7am (the prev day) and I cannot get to sleep. Been trying since midnight

answering these rediculous questions is my last hope (Mariokarted myself out and simulationed myself out as well)

__________________
Nothing is impossible.
Once a problem is realised, the rest is just details

 

i thought the B-H curves and Hysteresis graphed about the output saturation and frequency response of a pickup?

The B-H curves means Magnetized Vs unMagnetized ?

Ferromagnetic Materials- iron,nickel, Cobalt, alloys
Materials that can be magnetized are and have to be magnetized

Current- produces a magnetic field= Electromagnetic field

Permeability- ease
Reluctance- opposition

NonMagnetic Materials- like paper,glass,wood,plastic,wax
Like the Bobbin and pickup wax

 

No it is Flux Density vs Magnetizing Force

the 2nd quandrant of a B-H curce is the demagnatising curve, but you dont really want to go there (if it is a perminant magnet - soft-iron, then yer if you want).

__________________
Nothing is impossible.
Once a problem is realised, the rest is just details

 

Thanks alot styx for helping me out

Flux Density vs Magnetizing Force

Is the Flux Density the magnet or coil of wire?

Is the Magnetizing force the magnet or coil of wire?

What is the Saturation for and Negative Saturation for?

 

voltage / current relationship is non-linear.

is phase lead or lag relations linear or non-linear?

When tapping is it non-linear or linear?


Why when switching the pickups polarity its 180 degrees?
What sets the magnet to 180 degrees?

Maybe altering the Flux like Permeability or Reluctance can change
the magnets phase?

What sets the magnets phase?

 

Hi Styx,
The spaceman arrived back to earth after being away for a few hundred years and found a high school text book. He is asking questions about each and every one of its sentences.

__________________
Uncle $crooge

 

Ha yup. I am gving up now. IF he cant help himself why should we help him

__________________
Nothing is impossible.
Once a problem is realised, the rest is just details

 

Permeability is basically the measure of how magnetic is the substance.
One cannot change permeability it depends on the material used.

 

Thanks guys for the help

 

oh boy. its like he is rattling off random questions for no reason.

Now Walters,
Why are you asking us 1,000 useless questions? no one in the last 2 days would even come up with 1,000 questions but you!

We can understand if you are trying to build something and you need help on it, but from what I see, at least 80% of the questions you want answered have no use in a single circuit.

Most of your questions could be answered by doing a search on google.com.

P.S. I exaggerated when I said 1,000 because he asks too many questions.

__________________
-=: The best low-priced components to troubleshoot with are the speaker and the LED :=-

 

I'm trying to understand the theory of magnets and electromagnetism
and the questions i ask i can't find the answers in my book but i need help understand about magnets more can u please help me with these answers

 

you were asking about magnets, coils, inductors, resistors, and capacitors, and whatever else you were asking.

See what you have posted in this entire thread.

and what do you want to do with the magnets?

If you can't answer that, then why bother understanding it?

Its like me trying to understand how to smoke a cigarette without a lighter!

__________________
-=: The best low-priced components to troubleshoot with are the speaker and the LED :=-

 

Flux Density vs Magnetizing Force

Is the Flux Density the magnet or coil of wire?

Is the Magnetizing force the magnet or coil of wire?

What is the Saturation for and Negative Saturation for?
voltage / current relationship is non-linear.

is phase lead or lag relations linear or non-linear?

When tapping is it non-linear or linear?


Why when switching the pickups polarity its 180 degrees?
What sets the magnet to 180 degrees?

Maybe altering the Flux like Permeability or Reluctance can change
the magnets phase?

What sets the magnets phase

Can u help explain these better for me ?