Muller Dynamo

chalamadad · July 27, 2011, 11:24:07 AM

Quote from: mondrasek on July 27, 2011, 09:34:36 AM
For your consideration:

http://www.cadickcorp.com/download/TB004a_Ferroresonance.pdf

@mondrasek: That document looks interesting, thanks.

I've managed to resemble Romero's waveform (see image below). Also I saw an increase or decrease (depending on the direction) of peak-to-peak values of the waveform when biasing magnets were introduced. So it was possible to increase the output with biasing magnets one at a time until there was no further increase possible. Neat. One coilset, simply in bucking configuration. So this (and changing the airgap) is how the tuning works.

xenomorphlabs · July 27, 2011, 02:16:01 PM

Okay a couple of experimenters see good effects with a pair of generator coils now. Hopefully someones completes the tuning for all gen coils in that way and can report whether or not this is exhibiting a similar COP like Romero's device.

chalamadad · July 27, 2011, 04:17:20 PM

Quote from: xenomorphlabs on July 27, 2011, 02:16:01 PM
Okay a couple of experimenters see good effects with a pair of generator coils now. Hopefully someones completes the tuning for all gen coils in that way and can report whether or not this is exhibiting a similar COP like Romero's device.

If the output voltage wasn't so low in bucking configuration. It's just 1 to 1.9 Volts per coilset. Doesn't seem to be enough. Any ideas? Different airgaps can increase it but in Romero's setup there was not too much of a difference there.

mondrasek · July 27, 2011, 04:34:14 PM

Quote from: chalamadad on July 27, 2011, 04:17:20 PM
If the output voltage wasn't so low in bucking configuration. It's just 1 to 1.9 Volts per coilset. Doesn't seem to be enough. Any ideas? Different airgaps can increase it but in Romero's setup there was not too much of a difference there.

Really? I can get 15V+ easy right now (one pair only: took a step back to check the backing mag effects more thoroughly). Are you matching the amplitude of the wave form from your upper coil to your bottom coil on a scope to make sure they are equal and therefor should cancel Iout?

What is your gap from coils and/or protruding cores to the rotor mags?

Afterthought: Are you measuring this Vout with a load? My 15V+ is without a load. Finding the proper load resistance is a different adventure, imho.

M.

chalamadad · July 27, 2011, 04:47:43 PM

Quote from: mondrasek on July 27, 2011, 04:34:14 PM
Really? I can get 15V+ easy right now. Are you matching the amplitude of the wave form from your upper coil to your bottom coil on a scope to make sure they are equal and therefor should cancel Iout?

What is your gap from coils and or protruding cores to the rotor mags?

Afterthought: Are you measuring this Vout with a load? My 15V+ is without a load. Finding the proper load resistance is a different adventure, imho.

M.

Gaps are different and fairly large (around 10 and 20 mm) because the cores were crashing with the rotor magnets. Wanted to be sure that this is not happening. So that must probably be it then, thanks.
But I got decent speed (2300 rpm @ 12V) with larger gap. Switched each of the driving coilsets to bottom coil only.

I've read the document about ferroresonance. Another explanation that hints to core saturation. Has anyone experimented with grounding? Is it possible to get extra potential from earth?