Shorting coil gives back more power

[yssuraxu_697]

Thought I would clarify a bit why I got so excited with this EMP stuff.

What was the party trick of Ismael Aviso?
   Shooting stuff up in the air.
How you do shoot stuff up in the air?
   EMP pulse.
How to make one from tiny average input?
   Capacitor discharge OR flux compression generator!

Also if one really wants to negotiate with strong neoydmiums on equal terms
there is need for another strong neodymium OR EMP pulse.

And the fact that I "discovered" with my pulse motor is that when you
drive it with mini-EMPs and very low resistance coils then for
short period of time one can treat ordinary wire as superconductor.
Meaning you get your EMP and also almost all of the energy is left,
because it will not dissipate in resistance like in classical approach.
And you can do with it all you want.

Also I would point out the Time Constant graph...
http://www.tpub.com/content/neets/14191/img/14191_30_2.jpg
0.7TC point looks nice cut-off point for drive coil, doesnt it?

[giantkiller]

Interesting.
In my last test with coil at resonant freq I slid the iron core in and out. When mostly air core the scope p-p voltage was at its highest. As the core slid in the signal lowered. This is nothing new but it focused me on the air gap between the magnet and core where the flux would increase and decrease. The flux increases in the gap as the p-p voltage goes down on the scope. The core absorbs the energy and it becomes magnetic energy. Nothing new but it showed the flux field variations the Kunel patent points out. This was a verification of the patent in an partial inverse way. Now what I want to do is put the flux meter in place of the magnet that is the one on the core at the opposite end of where the flux gap is. Then put a low inductance coil in the gap and drive it to see the reaction at the flux meter.
I also am going to drive the gap coil in both directions with a dual pulse protocol of a slow square wave with faster square pulses inside that.

Another idea I have is to make a flux coil like a pancake but with a center hole of half the diameter of the flux holding core, drive that and move the driver coil back and forth in the gap so see the results. Then make another similar pancake so that 2 can reside in the gap and varing places.

This test will take place on the ega color monitor screen for visual flux viewing.

If....   There is anything interesting I will post the results. Otherwise these quick and dirties are just that.

As Stanley Meyer and others have pointed out 'The power is in the potential not the conductor'. Grasp this and it becomes very easy and simple to understand. Kind of disapates all arguments doesn't it?

[Feynman]

Hey guys,

This is really interesting.  I'll have to do my own experiments...  does anyone have an opinion of magnet wire vs insulated wire for the coils?

I'm thinking of experimenting with input pulses in the vicinity of 12V - 160V, probably mostly DC input.

Cheers,
Feynman

[Feynman]

@GK, @all

Check out my Square Wave pulse simulator, you can see how the actual heterodyned square wave / pwm wave varies from predicted square wave / pwm wave.  The PureData simulation file is here, it supports precise phase calculation.

http://feynmanslab.com/docs
--^ download and run the .pd file in PureData

You can download PureData here:
http://puredata.info/community/projects/software/pd-extended

Screenshot attached.

@GK

Are you using magnet wire or insulated wire , and what is your preference?  Also what is the amplitude (V) and freq (khz) of your input?  How did you determine your coils' resonant frequency (experimentally or mathematically?)

Thanks,
Feynman

[i_ron]

Interesting.

GK, I would question that your sketch shows coil shorting? more a pulsed drive?

In tests I did with the Thane shorted coil what I found is shorting the coil reverses the magnetic field of the core.

The setup had a pickup coil on the back of the rotor and the "B" blue trace is triggered from this pickup each time. The "A" red trace is from a hall probe on the end of the I lam core, (opposite end from the rotating magnet)

First pic... normal operation

second pic... shorted

This is of course a full time short and not pulsed but is an easily done experiment to show what happens in a coil shorting moment.

The field reverses on a short, then instantly returns on removal of the short,
generating an intense induced pulse.  My take anyway...

Ron