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Author Topic: DIY Flapjack Coil Jig  (Read 46170 times)

nievesoliveras

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Re: DIY Flapjack Coil Jig
« Reply #15 on: February 10, 2009, 05:01:48 PM »
@zmonkey

You are a good experimenter. That looks very well!

Jesus

Koen1

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Re: DIY Flapjack Coil Jig
« Reply #16 on: February 11, 2009, 04:49:44 PM »
Yeah, nice handicraft there Zmonkey! :)

... sorry but may I ask what you're building exactly?
;)

regards,
Koen

z.monkey

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Re: DIY Flapjack Coil Jig
« Reply #17 on: February 11, 2009, 04:58:20 PM »
Thanks Boss (Jesus), because you know Jesus is Boss...

Koen, That is the future...

z.monkey

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Re: DIY Flapjack Coil Jig
« Reply #18 on: February 20, 2009, 03:06:35 AM »
Flaxjax!

broli

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Re: DIY Flapjack Coil Jig
« Reply #19 on: February 20, 2009, 11:26:58 AM »
Z monkey can you do me a favor please. Can you power on one of those pancake coils under some iron filings or magnetic sheet to see how the field looks and take some pictures of it. To be more specific whether it's nicely radial or not.

BEP

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Re: DIY Flapjack Coil Jig
« Reply #20 on: February 20, 2009, 11:52:51 AM »
@Z.Monkey

It looks like your secondary will counter itself - the top and bottom halves will have counter polarity.
Other than that your coil reminds me of what a 'Tesla Coil' should look like - secondaries above and below the primary.

Nice looking work!

BEP
« Last Edit: February 20, 2009, 12:38:16 PM by BEP »

broli

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Re: DIY Flapjack Coil Jig
« Reply #21 on: February 20, 2009, 12:02:38 PM »
@broli

It looks like your secondary will counter itself - the top and bottom halves will have counter polarity.
Other than that your coil reminds me of what a 'Tesla Coil' should look like - secondaries above and below the primary.

Nice looking work!

BEP

I think you have the wrong guy  ;D.

BEP

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Re: DIY Flapjack Coil Jig
« Reply #22 on: February 20, 2009, 12:38:52 PM »
I think you have the wrong guy  ;D.

I certainly did! Sorry.

z.monkey

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Re: DIY Flapjack Coil Jig
« Reply #23 on: February 20, 2009, 12:44:56 PM »
The vertical center (red) coil is the primary...

It establishes the major axis of the magnetic field...

The planar coil (yellow) is the secondary...

It sits on the equatorial orbital plane of the magnetic field...

It would be difficult to apply paper to this transformer to look at the magnetic field.  I am thinking that I can dump some iron filings directly on to the coil, apply some direct current and some vibration and maybe get a idea of what the magnetic field really looks like.  It would be nice to have a magnetic flux camera, or something that would fluoresce the flux. This is the trouble with magnetism, we can't see it.  Transformer design would be a LOT easier if we could see magnetic flux....

BEP

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Re: DIY Flapjack Coil Jig
« Reply #24 on: February 20, 2009, 12:56:15 PM »
Ah!
The yellow is the secondary.

Pancake coils are a bit unique in that polarity is radial. i.e. North in the center and South at the outer diameter.

If you pulse or alternate the current in the primary you should see this. I don't know how well it will perform.
If the primary current is unchanging then nothing should come out of the secondary unless you add a static electric source at a right angle to your magnetic (something for Lorentz to work on).

z.monkey

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Re: DIY Flapjack Coil Jig
« Reply #25 on: February 20, 2009, 01:16:36 PM »
I am going to run it with 120 VAC from my ElectroMechanical Inverter...

I was only going to apply DC only to look at the magnetic field...

Its a transformer, so yeah the current has to be wiggling to get the effect...

broli

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Re: DIY Flapjack Coil Jig
« Reply #26 on: February 20, 2009, 01:19:21 PM »
I think AC will do the trick as well as the filings or w/e will not physically flip over, I assume?. Although I was interested in the pancake on its own for another project I'm working/thinking of.

z.monkey

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Re: DIY Flapjack Coil Jig
« Reply #27 on: February 20, 2009, 01:40:22 PM »
There are many alternate applications of the flapjack coil...

There is a reason Tesla was interested in these, lets find out...

Accretion of electrons happens in the equatorial orbital plane of the magnetic field.  The flapjack coil energized by itself (I think) will still develop a magnetic field with the same major axis (where the red coil is now).  But will collect the energy that it puts into the magnetic field back onto itself.  So the result would be an extra large back EMF.  This is because the coil sits on the equatorial orbital plane of the magnetic field, and collects the accretion of electrons formed in the field.  Think about this, the major axis is formed in the center of the loops of wire, perpendicular to the windings.  So the Flapjack coil would generate an abnormal amount of back EMF, which would make it good for one of those battery charger things like a Bedini circuit...

nievesoliveras

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Re: DIY Flapjack Coil Jig
« Reply #28 on: February 20, 2009, 01:41:33 PM »
Congratulations @zmonkey

That work is finished and ready to test!

Jesus

BEP

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Re: DIY Flapjack Coil Jig
« Reply #29 on: February 20, 2009, 01:47:08 PM »
@Z.Monkey

Quote
Pancake coils are a bit unique in that polarity is radial. i.e. North in the center and South at the outer diameter.

Apply some current to that pancake coil and test it with a compass. You will see what I mean.
I agree with most of what you say but not with the polarity part.

BEP