Proof of concept - perturbing a static magnetic field

[eldarion]

What voltage did you have going to the coils ? Did you a resistor in series with coils to reduce the amps down, if so what value ? (When I get going I'll try larger value !!)

I had 13.8V at about 4 amps max going to the coils.

I had a chunk of time I didn't think I would have, so I was able to rebuild a simple pulser using IRF640s (not the entire H-bridge, that would've taken far, far longer--hopefully I will not have to reverse current direction at all to get this to work.)  This time, I included back-EMF suppression diodes, and it seems to be working when I pulse one winding of the coil.

No, I did not use a resistor.  I would like a rather large magnetic field generated from the coils themselves if at all possible, so that I can cross that non-linear threshold that seems to exist in most free-energy devices.  RN Boyd also makes mention of a threshold.

This coil has over 100 feet of #24 guage manget wire in each winding, so it has a relatively high intrinsic resistance.

I will be putting up a website with full schematics, pictures, and results within a couple of days at http://overunity.pearsoncomputing.net.  The results page may come later, though, depending on if this pulser blows up as well!

I am using an FPGA to generate exact synthesized pulses of precise frequency, duration, and "offset".  I am only concerned that my voltages are not high enough.

Sorry for my initial pessimism, this sort of thing happens on a regular basis here.

[bob.rennips]

Excellent news, Eldarion. Look forward to hearing how things go.

I've now wound my coil. Got to get hold of a couple of components and a slot of time and I'll let you all know how it goes. I've been particularly motivated having seen the above videos and the anomalous effects when using only 9 and 12volts.

[bob.rennips]

http://www.overunity.com/index.php/topic,1872.msg33222.html#msg33222

Check this post out by jason (jdo300) if you have not already. Interesting ideas to do with thresholds...

[eldarion]

I got everything hooked up for a quick test, but sadly nothing good to report yet.  So, here is a quick list of phenomena I encountered, all to be expected.

1. The Neo magnets are strongly repelled from the center of the coil when it is in operation.
2. Very strong back-EMF pulses are observed, both with and without the magnet in the core.

I pulsed the apparatus at 0.1Khz and 1KHz with no change.  I used a small piece of ferrous material to "probe" the magnetic field strength, and no difference was noted when the device was engaged.

If you want to see the experiment, I threw some pics up at http://overunity.pearsoncomputing.net

Testing continues...

[eldarion]

Hmmm...I got to thinking, and I may be going about this the wrong way with respect to the coil.

The patent seems to make a big deal of high voltage.  The only thing that would be altered with the increased voltage would be the risetime of the current in the coil, and therefore the strength of the second derivative of the input function.  I think that Jason is definitely on to at least one of the "secrets" here.

In order to make this work at lower voltages, the inductance of the coil must be reduced as far as possible.  This will allow very fast risetimes, but to maintain the correct shape of the input waveform and not waste power the input voltage must be shut off as soon as the current reaches peak.  This requires the control circuit to work at a much higher frequency than the high-voltage version, hence the preference for the high-voltage version?

Tubes are very good at switching high voltages very quickly...

With the setup I have here, I do not think that I will ever see any effects, as my rise/fall time is too long for the peak voltage that I attain (13.8V).  I'll wind another, smaller, coil and try a pulse frequency closer to 1MHz.  Beyond that frequency, my MOSFET driver chip isn't any good (minimum rise/fall time at the MOSFET gates is 10ns) .   However, the IRF640 is good up to 200V, so all may not be lost.  I just wouldn't want to see a MOSFET blow up with 200V at the terminals!

I fear that I would have to have this working at a much higher voltage for a 10ns rise/fall time to be acceptable.  I wonder if this thing can be simultated, so that we can know exactly where the threshold is?  It would seem to be a matter of assigning units to Jason's graphs, but I don't know which units to assign per unit step on the graph.

Onwards...