Shorting coil gives back more power

[popolibero]

Hi Bruce_TPU,

this would reflect what Bedini said about Cole's finds with regards to multistrand coils. But every wire needs its own FWBR for this to work right? Have you personally measured this effect by having more output?
Also, I think adding wires is probably more efficient up to a certain amount, after that the multistrand wire gets too thick and less winds fit on the spool.

Mario

[popolibero]

Hi Bolt, you wrote:

There is no difference from a wheel going around with a magnet on it passing a coil OR have a coil with a magnet beside it and pulse it stationary. Only provision the trigger coils sits over the Bloch Wall so the coil collapse when sine shorted cuts the magnetic lines of force. The result is the same.

I have done quite a few experiments a while ago to see if I could replicate the magnacoaster setup but with no luck.
I thought he would charge the coil and then collect the collapse plus what apparently comes from the magnet (I used all of his pics I could find plus patent), while you mentioned sine wave. I can't quite envision what you said about the magnet next to the coil and the trigger coil on the bloch wall. Do you mean one control coil and one generator coil?

thanks,
Mario

[bolt]

Magnacoaster used a pulsed coil of not that many turns about 100 is enough as seen in his early photos. He used a laminate steel core like transformer strips then applied 5 powerful neos one end and 1 the other. This magnet layout is VITAL.

It creates a Bloch wall which sits about 2/3 across for the length of the core. The edge of the coil sits right over the bloch wall. So you need it to slide along so you can find the sweet spot.  When the coil is pulsed the magnetic field is already on the Bloch wall and acts as a pivot point. You can not do this any other way when using such powerful neos to fight against this magnetic field would need like 400 amp pulses so you hit it right on the Bloch wall. This is called  asymmetric magnetic modulation. When the field collapses the neos flux over shoots and generates more power out of the coil than what you put into it. Now coil shorting will help here a lot. I dont know what he is doing now but if you hit the top of the rebounding neo spike with  short you can almost certainly increase the voltage perhaps 5 times more then syphon off ONLY the HF part of this signal will prevent loading to the driver. In practice you would put blocking diodes going into the coil to prevent BEMF reaching the driver then use about 0.01uF in series each side of the coil to syphon off only the HF and use as high pass filter. Then add a HF balum traffo and impedance match down before going to FWBR then into a dump cap.

Having not built it that is all i can tell you but if i was to build any of this stuff i would do this rather then piss about with bedini wheels and spinning magnets.

I also know he was using high side fet triggers because when they blew out short circuit it almost always melted his coils:)

[yssuraxu_697]

Having not built it that is all i can tell you but if i was to build any of this stuff i would do this rather then piss about with bedini wheels and spinning magnets.

So what have you built?
Spinning magnets is just a learning tool, and very good one.
You cannot write a word before you know the letters.

[popolibero]

I see what you mean, I've been all solid state from the beginning until a few months ago, because there where a few concepts I needed to learn by actually having rotating magnets. But I'm  definitely going back to solid state.
I'm at work so can't make a drawing but I think I get the picture. The bloch wall sits at 1/3 on the core side closer to the 4 magnet pack. The coil starts there and has the end towards the weeker side (1 magnet). The coil when pulsed has the same magnetic orientation as the single magnet and actually strenghtens its field pulling the bloch wall a bit inside the coil. I mean if the 4 magnets are N towards the core the single magnet has S facing the core, the coil when energized has same polarity as the single magnet, correct?

Mario