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Author Topic: Magnetic fields within a toroid inductor.  (Read 93414 times)

Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #120 on: September 21, 2013, 01:24:57 PM »
I really dont think its heat causing the effect but even if it is the ice freezes solid and it looked exactly like a tornado in the container. 
I used a plastic container, the ones they use to cook pasta by adding boiling water. Something of interest, if the coil is energized it will not crack the container but if the coil is not energized more than likely the ice will bust the container.

Another experiment I did, I know some dont believe in the ether but check this out.
I took a transformer put it in the container covered the container in copper screen wire basically creating a Faraday cage,(I lined the inside of the container) then I froze the container without the transformer being energized, it busted the container and ripped a two inch slit in the screen, I got kindof discouraged because it ripped the screen but I decided to energize the trany anyway. I left the cell in the freezer and energized the coil and checked it about an hour later, there was a jagged line from the slit in the screen leading to the tranny that looked like a lightning strike, the jagged line had not made it all the way to the trany this tells me the line was coming from outside the cell and not from the transformer. At the time I really didnt realize what was happening I thawed the container and took everything apart without taking any pics but as I thought about it later I wished I had taken pics. Does this prove the existance of the ether  :-\ not sure, I was planning on repeating the experiment but havent done it yet.

Here's a pic of one of the setups I used before being froze.


Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #121 on: September 21, 2013, 01:34:45 PM »
I have froze a permanent magnet and the field is there just like with the coils, there is a field besides the magnetic field, there are two fields the magnetic field and the electric field. If you think about it the electric field runs 90 degrees to the magnetic field and this is exactly where this field is, right where its supposed to be.

Guys Im no electronics expert and not the sharpest tak in the shed but it doesnt take a genius to realize this needs to be explored in more detail.

Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #122 on: September 21, 2013, 02:46:15 PM »
Here's a permanent magnet froze in ice, this is with tap water so its not as clear as with the bottled water. Notice the field is not at 90 degrees in relation to the magnet but more like 60 or 51 to be more precise.

Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #123 on: September 21, 2013, 02:48:48 PM »
Check this out, the camera pic shows a curvature in the ice in some of the pics I took but there was no curve there when taking the pic..


Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #124 on: September 21, 2013, 02:50:48 PM »
Another, can someone explain this.

Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #125 on: September 21, 2013, 03:03:40 PM »
These pics were all taken withing a three minute window of the cell with a permanent magnet inside.
 

Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #126 on: September 21, 2013, 03:21:21 PM »
An to the next question yes I froze two magnets in repulsion, notice there are two separate fields, not a very good pic, I used tap water this is before I found bottled water worked best for clarity.


Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #127 on: September 21, 2013, 04:28:05 PM »
I finally got the parts in to build an adjustable test platform
I suck at electronics so it probably wont get tested as it should but I will give a go

MileHigh

  • Hero Member
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  • Posts: 7600
Re: Magnetic fields within a toroid inductor.
« Reply #128 on: September 22, 2013, 02:20:20 PM »
Dave45:

Quote
Just to clarify I checked the coil for a magnetic field before I put it in water, horizontal, no magnetic field.
The coil was powered with 12v dc using an automotive bulb pulling 2 amps.

The coil had to have an observable magnetic field.  So there is something wrong there.  Perhaps you could post a pic of the coil so we could try to understand why you did not observe a magnetic field.

MileHigh

Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #129 on: September 22, 2013, 08:00:22 PM »
Hey MileHigh
 The coil was wound and connected specifically so it would not have a magnetic field, so as to cancel its own field.
Rather than try to explain I will draw it out later this evening, Im busy at the moment, honey do this honey do that, no rest for the weary.

dave



Dave45

  • Guest
Re: Magnetic fields within a toroid inductor.
« Reply #130 on: September 25, 2013, 01:32:40 PM »
Quote
Lets say we have 2 toroid cores and wind them the same. Then use a ferrite rod through the toroids centers like an axle with wheels. I wonder if input to one would induce the other? Just thinking. If we can run 1 wire through the toroid, equal to 1/4 turn, really, and get output from that wire, then why not see if we can draw out any flexing fields from one core to another via an axle core.  Also, how would a core in the hole of a toroid affect the toroid coil function, or value. All things to try.

Your wheels need spokes and spin  8)

Good morinin America how are ya, dont ya know me Im your native son  ;D

hanon

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  • Posts: 616
    • https://figueragenerator.wordpress.com/
Re: Magnetic fields within a toroid inductor.
« Reply #131 on: September 26, 2013, 07:44:13 PM »
Hi all,

This video is very enlightening:

http://www.youtube.com/watch?v=haez8oojjDo

Regards

Magluvin

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Re: Magnetic fields within a toroid inductor.
« Reply #132 on: September 27, 2013, 01:51:37 AM »
Here is one I like. It has an odd twist to the winding of the secondary.

http://www.youtube.com/watch?v=AaYOph1I3uw

Mags

Magluvin

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Re: Magnetic fields within a toroid inductor.
« Reply #133 on: September 27, 2013, 07:25:02 AM »
Still havnt gotten my hall sensors. ???   New tracking date is the 3rd. But thats not news.  ;)

But this is.  Below is some pics of parts on a circuit board from a high end electric wheel chair motor control box. My buddy works on these things and gave me some out dated stuff. Anyway, there are 4 of these small cores with the thick wires as you see. But, the lil white stripe is a marking on the top of a hall sensor. ;D They look to be measuring currents on the outputs to the motors. Never seen that before.  So Im going to remove the sensors this weekend and try some things. One pic is of the bottom of the board where you can see the thick wires soldered and the 3 little soldered leads(hall).  Pretty cool idea.

Just thought that might be interesting. ;)

Mags

gyulasun

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Re: Magnetic fields within a toroid inductor.
« Reply #134 on: September 27, 2013, 12:48:43 PM »
Hi Mags,

Yes, this solution is indeed interesting, not seen yet such either.  If I can see it correctly the sensor is placed into the air gap of a toroidal core and any current change in the heavy wire that the motor initiates would appear as a flux change in the gap of the core.
It is a kind of a current transformer without output coil.
If the exact type of the Hall sensor cannot be identified then you need to assume two things: whether it gives a linear output which is proportional to the flux change (i.e. current change) or it gives a digital low or high above a certain flux strength for initiating certain switching interaction (say due to overcurrent). 

Gyula