Permanent Magnet: ON/OFF Mechanism...

[gn0stik]

I think using an iron wire coil around a magnet would be the easiest thing as you could use
very fine isolated garden wire, so the current would be low and just try to
toggle on/off the magnetic properties in this core-coil !
This way also the magnet will not be weakened !

Try it!

[gn0stik]

Hi Tao,

This topic is immensely interesting and I would like to do a thorough investigation of the idea. Right now, I am working at my university in the physics department but as an Engineering student, I have access to pretty much whatever I need to do any testing so I want to setup a thorough experiment to prove once and for all if this does work. I want to start with ferrite magnets since the person said they worked well, but I'm trying to understand how to best attach the wires to the magnet. Do I simply touch the tips of the wire to the sides or is the conductive epoxy necessary to make a decent electrical connection... and as one person already mentioned, I wonder how this will effect ceramic magnets since they are already non-conductive.

Is there any way I could get in contact with the original person to ask him about this?

God Bless,
Jason O

P.S. I?ll also try Stefan?s idea with the iron wire also.

If you have access to all the necessary equipment, just do it as outlined in the original post first. Don't change any of the variables. If that doesn't work, then go ahead and experiment with coils and iron wire etc. There are a lot of projects that have been declared not to work after half a dozen experimenters failed to even conduct their experiments to spec.  They immediately start modifying...

[hartiberlin]

Hi

I totaly agree with Hartiberlin - behaviour of coil
wound with iron wire is strange .
For example I produced a selenoid wound by iron wire
and this selenoid did not work . It surprised me.
Does somebody a theory why it is not working?

thanks

@kadora,
what exactly did you test ?
If you pulse the coil with square waves you will see no
Back EMF pulses coming from the coil, what a normal copper coil would do.
I guess this is because at lower current values the magnetic field is still completely
inside the iron of the coil. Maybe only higher currents will drive the magnet
field out of the iron wire..and then we would finally have Back EMF, when switching
off the current...
Or do you have another explanation ?

[lancaIV]

To many "perhabs"!

Hello Jack H.,there is an idea,JP2003009558,Keiichiro Asaoka,
a modular static dynamic EMF-amplifier,
there is also the use of permanent magnets !
You wrote about the possibility to influence the permanent magnet
force,to amplify or to neutralizise this force,
is this knowledge actually "secret",a part of your patent claims ?
Or can you tell us more details about the process ?

Sincerely
            de Lanca

[gn0stik]

Hi

I totaly agree with Hartiberlin - behaviour of coil
wound with iron wire is strange .
For example I produced a selenoid wound by iron wire
and this selenoid did not work . It surprised me.
Does somebody a theory why it is not working?

thanks

@kadora,
what exactly did you test ?
If you pulse the coil with square waves you will see no
Back EMF pulses coming from the coil, what a normal copper coil would do.
I guess this is because at lower current values the magnetic field is still completely
inside the iron of the coil. Maybe only higher currents will drive the magnet
field out of the iron wire..and then we would finally have Back EMF, when switching
off the current...
Or do you have another explanation ?

Yes, he didn't pump enough power into it.

Without knowing his set up, or what he meant by "it didn't work" all we can assume is that it did nothing. Not working could mean that it only moved a small amount, or whatever.

At any rate, as tao said in an earlier thread, the resistance in iron wire is about 10 times greater than copper wire. Think about what that does to inductance.

nuff said.