Muller Dynamo

[konehead]

Hi Mariu
I experimetned with my bidirecitonal mosfet circuit; (two IRFP460s and a 4421 driver chip and halleffect etc...)
And tried to put an AC cap in the same size as you how in your video, across the coil hoping for a speed-up and less draw but this didnt work at all...it did nothing.
Also tried the 10K resistor on the left mosfet, and 100ohm on right - this did nothing at all....no effect (testing 3ohm coil pulsing around 4 magnet rotor in attractive mode)
tried the diode off only the right side mosfet, back into battery or cap - this kills everything...so no good either...
what does work good for me anyways, is a single steering diode into DC cap to catch the backemf/recoil, with the diode coming off the "non-ground" DRAIN lead of the bidirectional mosfets (the swithing is between the coil and the ground, so one of the drain leads is on the ground of the circuit)
This makes the motor run alittle faster and I get huge voltage in 750uf cap very fast...so its a "pure gain" situation.
anyways looks like the driver chip really makes things complicated if trying to replicate your circuit and its performance so I think driver chip will need to be left out in order to do it....

my theory on your circuit (just theory) is that you have shortened the pulse widht with the two differnt size resistors across the gates and source leads.....probably the one ont the right with the 100ohm resistor turns off first, and  that is why that is the one with that diode attaching to it...and probably you had a too-long pulse width before, and when you do your tricks, the pulse widht is much shorter to where it "should be", so it runs much better faster with less draw.......
I also think (theory) that the AC cap would be better off to be some steering-diodes off the coil into caps then caps into load...so you could still get speed up, and less draw, like the AC cap does, but instead of getting "only' speed up and less draw, you could get speed up, less draw AND have some power sitting in a DC cap, ready to hit a load with so you have a power-output too as added bonus...

[mariuscivic]

Hi Konehead
With the 100ohm resistor the pulse is shorter but as i see it works only in driving the coil. When shorting the coil, the 100ohm resistor has the same effect as 10k.
With  my new 24mags rotor i could not have the speed up effect with a cap attached to the coil.This effect is present only on my small hdd rotor.
Still playing with coil shorting; i have this bifilar twisted wire coil that gives me coll wave on the scope. No other normal coil gave me this long oscilation. There is 150-160V out on the FWBR but when connecting a cap , it fills up to 300V. In this present setup, shorting brakes the rotor with 10mA (12V;55mA - 1550rpm)

[konehead]

hi Mariu

If you go to ebay type in 44A 500V mosfet and you will find these:
http://www.ebay.com/sch/i.html?rawquery=ebay&sig=%7bmsdigsig%7d&MT_ID=8&crlp=363453572_23400&seg_id=0&tt_encode=raw&its=%7bmsimpts%7d&geo_id=1&keyword=ebay&clk_rvr_id=312167239788&ssPageName=ADME:B:TB1:US:1&_nkw=44A+500V+mosfet+&_trksid=p5197.c0.m627On
thats a really good price for them - try 4 or 5 in paralell to improve your coil shorting performance.....complete lack of any lenz law lugging I am convinced now is from very very short pulse width - .25 millisecond or less at 60hz sinewave - a ratio of somehting like that will have no effect at all on the rotor speed; i tested this recently.
those mosfets listed above have a resistance rated at only .12 ohms - just think what it wold be with a few in paralell....
When you have that very short pulse width, also now you dont have much time for the coil shorting effect to happen....so you dont want to lose anything with any resistance in the swtihcing...
Aircoils work best with coil shorting too - are you using ferrite cores in your coil short experiments that lug abit?
The ferrite even though it is fast core material will cause some harmonics bouncing against the coil that gets shorted - its best to use aircored coils, so the coil-ringing only is all that will fill caps....

[Khwartz]

Hi Khwartz

Hi Kone

You got the cap discharge formula wrong.
its;
Farad size of cap / 2
X
(max voltage before discharge SQUARED)   MINUS  (minumum voltage in cap SQUARED)
this is what you got wrong - you need to square them FIRST, before subtracting the minimum from the maximum voltage.
X
discharge events PER SECOND = WATTS

Very thanks for having corrected me 
so, I correct it with ma own writing:

P = 0.5 * C * (Vmax² - Vmin²) * f²
with
P: power [Watts = Joules/second],
C: capacitance [Farad],
V: voltage [Volts],
f: frequency of the charging-discharging cycles [Hertz = cycle per second]

Is that right now?

that attachment doesnt really have any meaning as far as the way to do peak coil shorting, since you load caps first, with NO RESISTANCE from the coil-shrot ringing, then hit load with caps when caps are disconnected from the coils,,,so coils NEVER see any resistance, except for the cap's resistance itself,  the swtiching resistance, and the diode's resistance.
The only time you "see" any current is when caps finally hit load... - there are two seperate events - 1; fill cap and  2; discharge cap.....filling cap has no resitance in fact it can be a "resonate condition" with right size cap too (!!) ...so you arent going to see any "current" on a scope while filling a cap (as long as cap has no resitanc across it)
Where you will see current on a scope is only when cap hits the load - and during this time the coils are disconnected, so it puts all the engineers in a fuddy since they cant do the normal "lump resistive load" to check for power output with resitacne across the cap "all the time"....the engineers  will have to figure the power from the joules-release from the cap into the load...(what that formula is for)

Looks to me that is a QUIETE AMAZING statement and principle de know! It's making thinking to what Tom Bearden said about is solid state device, that he loads the cap without any current, and even cut the load duration to avoid any creation of current, saying that has a relapse time, a very short time but depending of the nature of the conductor, when "virtual electrons", "outside of the wire" and "at the speed of light", fill the cap. Did you know that? Because could make a difference to use this datum about the material, cause he said that copper was abut the worst for this, and if better material for the conductors, I should say "the managers of the virtual electrons" (for me would have something with the "vector-potential" of Richard Feynman) could multiply its efficiency. What do You think?

For the attachment, even if doesn't fit with the Muller's Dynamo way, would you agree on the statement I made on, about the respective power of each?

A conjecture : WE DON'T READ ANY CURRENT ONLY BECAUSE THE ELECTRONS MOVE FORWARD AND BACK TOO FAST, AND THAT THE RESULTING CURRENT LOOKS ZERO; like if such measurement instruments couldn't read so fast a displacement of charges...

Cheer.


ten 10uf caps are same as one 100uf one really no difference howeve you could do somthign trick like fil caps in series and unload in paralell or vice versa thats somethign to think about...as when in series they are less resistance....
[/quote]

[Khwartz]

Hi Konehead
With the 100ohm resistor the pulse is shorter but as i see it works only in driving the coil. When shorting the coil, the 100ohm resistor has the same effect as 10k.
With  my new 24mags rotor i could not have the speed up effect with a cap attached to the coil.This effect is present only on my small hdd rotor.
Still playing with coil shorting; i have this bifilar twisted wire coil that gives me coll wave on the scope. No other normal coil gave me this long oscilation. There is 150-160V out on the FWBR but when connecting a cap , it fills up to 300V. In this present setup, shorting brakes the rotor with 10mA (12V;55mA - 1550rpm)

Hi Marius

So you mean that you don't need in your system to have 2 kinds of coils: driving and generator coils, but only 1 that you could multiply around the disk; am I right?

How does it takes to feel you cap to 300V and from which voltage it starts at first to go up to 300V, are they 0V at start to fill?

Cheer.