Muller Dynamo

[konehead]

Hi JoeFR again

I see that scope shot you put up, but cant tell what the voltage is - but you can see it drops "6 dots" so whatever that top voltage is, square it, and whatever the bottom voltage is, square that, and so justt subtract the bottom boltage squared  from the top voltage squared .....then multiply this number by the farads of the cap /2 
your cap size in farads is  .00068 and so divide that by 2 = .000034

looks like your discharge is around twice a second, whatever that is exacltyshould be easy to find, so all you need to know is that voltage drop and you have it...

[penno64]

What can you guys make from this -

What is this extra component that provides coil shorting?

with -

the shorting component I discovered initialy was replaced by the way the coil pairs are constructed

Penno

[joefr]

Hi Kone

I made excell file to calculate power from cap discharge

Data from my scope shot:
V1 (Max) = 40V  squared=1600V
V2 (PK-PK) = 5,8V 40V-5,8V=34,2V squared=1168,64V
C=680uf 0,00068F/2=0,00034F
Time=560mS=0,560Sec

0,00034 * (1600-1168,64) * 0,560 = 0,0819W

Is this correct?

So I am getting 0,0819W out every 0,560Seconds ?

JoeFR

[desa]

Here is my Arduino code I am using to control the coil shorting - unshorting and controlling SSR relays to dump cap voltage to load.
The code is far from optimal ( i am beginner in programing) and I hope that we have some Arduino guru here on overunity forum?

Desa in my video http://www.youtube.com/watch?v=Lxh3XnU8lko I showed that coil unshorting at top sine wave is better at charging a Cap 680uF 200V.

JoeFR
Thank  you Joefr I am going to input it and see how it performs. Your setup looks great. It is nice to have equipped shop t play around.
@ e2matrix fill free to post it I would definitely look at it. Many times new information that is not relevant suddenly gets great potential when we take good look at it.
@Fausto great info you defiantly took care of my afternoon.

Dav.

[konehead]

Hi Joe

sorry I made mistake saying .00068/2 =  .000034 (its .00034 with three zeros) but you got it right with the farads in your formula

in the voltage-drop part of formula, you are supposed square the high V, and then square the low V ,
then subtract the lowV squared value from the highV squared value.

looks like you sutracted the voltage numbers first, then squared that result -this isnt right

also the final thing you mulitply by, is the "rate per second" so if it is 20 times a second, then times it all by 20, and in your case you have a pulse-rate of .5 seconds thereabouts so that means twice a second and you get to mulitply it all by 2 so you see the pulse-rate makes lots of difference in the final WATTS calcutaion - so three factors really: cap size, votlage drop and rate of discharge per second....

ANyways here is all your numbers in the formula:

.00068farad / 2 = .00034

40V in cap before discharge so 40 X 40 = 1600

5.8V it drops down to from the cap discharge to load so:

5.8 X 5.8 = 33.64

now you subtract the 33.6 from the 1600:

1600 - 33.4 = 1566.4

and then finally you pulse cap 2 times per second so final numbers are:

.00034  X  1566.4  X  2 = 1.065 WATTS

not bad eh!
especially  considering you are only running aon around 1.2 watts!! (100ma X12VDC)

Maybe try a bunch of different cap sizes, and different pulse rates see if you can get up to or above 100% recovery.

Maybe try SHORTING the coil right after the swtich-off of the primary in near future...try and "short" the backemf into caps rather than jsut swtihci it out....by shorting I mean to connect the two leads of the coil together very briefly during sinewave peakl-period, and in your case right when motor coil switch OPENS - which is an event that occurs during the sinewave peak period if looking at the sinewave the rotor magnets-only create...
the put FWBR AC legs across the coil ;eads being shorted, with DC side of FWBR into capacitor...use your arduino timing to dump this cap to load but have no load on this cap when it fills..

Use high amperage mosfets to coil-short, (so very low resistance ) - paralell some if you want to...and use mosfets with high voltage  rated to them too - at least 300V for your 12V powered motor, and 500 or 600V would be better...
Hookup mosfets "bidirectional" usig two mosfets, in that the gates and sources connect between two mosfets and then swtiching occurs between the two leftover drains...
so for coil-shorting, the coil leads would go onto the drain leads of mosfet A and mosfet B....if you "short" coils with single mosfet, you are only catching half of it.