Muller Dynamo

[chalamadad]

Battery loop running test:

http://www.youtube.com/watch?v=vHyez137hF8

(Unsuccessful. Battery loses charge after a while.)

[mariuscivic]

Hi chalamadad!
Nice video. I'm trying more to ''use'' only the peaks of the sinewave.Here is the sine wave with a small load (3 leds with a resistor) . I'm connecting the load with another  romero driving circuit but instead of the battery i put the FWBR from a gen coil and instead of the driving coil , i connected the load.  The hall is triggered by the small mags

[konehead]

Hi Chal

maybe if you had areound 23V in that cap when it hits battery, you could keep the run-battery up in voltage all the time....someone told me that is the "target voltage" you want in a cap when it hits a battery to charge in pulse-charge mode...

If you go with much smaller uf value of the DC cap, you might be able to have voltage that high in using evetyhting else the same as you have it "as is"

If you were to measure the current going into battery, the voltage level of the cap before discharge has a lot to do with the current output at discharge...

here is that formula again, how to calculate the watts output from a pulsed capacitor:

(FARAD size  of capacitor / 2)
X
(voltage in cap before discharge SQUARED minus the voltage in cap after discharge SQUARED)
X
cap discharge events PER SECOND  =  WATTS

so lets say you have 12V battery being charged, and you look with scope at 23V voltage in 1,000uf cap charging it ten times a second...

1,000uf = .001 farads /2 = .0005

23 X 23 = 529   12 X 12 = 144   529-144 = 385

(assuming the cap will dishcharge to 12V battery level and "stay there" in case of battery-charging work being done by cap)

so:
.0005 X 385 X 10 = 1.925 watts

in battery charging there is always grey-area of how much of a charge in the watts calcualted  does the battery accept and state of charge of battery and how much it really does it charge over long period etc etc.... but its fun to do the formula to check for watts anyways while testing...

as usual as I always write, you can short that coil into the cpaacitor, (at sinwevavepeak) by shorting leads of coil togheter  and put FWBR AC legs across coil, with DC side of FWBR into DC cap...then knock DC cap into battery to charge and have DC cap disconnected from coil when this cap-charge to battery happens........

[chalamadad]

Thanks Kone,

a smaller cap gives a higher voltage indeed. But it is not possible to use the reed then. It will get stuck at voltages above 14V. Maybe I want to test the discharge with a mosfet, maybe arduino controlled like what joefre did before. I wonder if the existing circuit could be used for cap discharging as well?

But see where it goes. In principle you want two of those coils feeding each other and it maybe might go without a battery. 

Chal

[chalamadad]

Hi chalamadad!
Nice video. I'm trying more to ''use'' only the peaks of the sinewave.Here is the sine wave with a small load (3 leds with a resistor) . I'm connecting the load with another  romero driving circuit but instead of the battery i put the FWBR from a gen coil and instead of the driving coil , i connected the load.  The hall is triggered by the small mags

Hi marius, why not continuously short the coils? You will hit the peak region as well. If I remember correctly Romero said he was continuously shorting his coils as well before he came up with muller device.
As far as I can tell the ringing state is like shorting the coil continuously for the time the magnet is above the coil. It can even be adjusted in such a ways that it rings ALL the time with the rotor spinning. But since it's drawing more current and it does not go with the alternating firing idea I don't know if we want that though.