Solid State Orbo System

[Bruce_TPU]

Hi Bruce,

I cannot recall your correct output frequency (was it 70Hz?) or frequencies, they are needed for the capacitance calculation, once you know the coils inductance values from the L meter. Would you write it again, I do not want to wade through so many mails, sorry for that.

It is 70Hz but I suspect it will change when the new pulser is built?  But this will give me a chance to experiment with it now.

Also, it would be good if you measure the coils DC resistance (if they are in series, or in parallel, then the resultant) it would be good for estimating the generator output resistance (because the coils will serve as generator output). This will help to find the optimum load resistance at which the maximum output can be received.

The output coils, all wire in parallel, measured 49.5 Ohms.

My only "problem" with your Brooks coil is that they have a rather high DC resistance, if I recall, about 254 Ohms for one such coil. It is ok that the geometry this coil has insures the biggest inductance possible for that given wire length but for generator coils such a high DC resistance is normally 'hunch on the back' because if load it with say only 10mA current,  the voltage drop 'inside' the coil will be 2.54V and this heats the coil only, it never comes out, except in heat. And a 10mA demand in a load current is not an extra wish for sure.
You would wish to use coils for generating electricity with much lower copper resistance, this means using thinner wires. I know this is bad news for you but once I have had to tell you, sorry.

Our brooks coils were originally designed to be pulsed with 1000 volts to generate huge magnetic fields.  So, I do understand about the heat.  But will try these before I switch to coils with less resistance.  That will be my next step after fully testing this present setup.

rgds,  Gyula

PS  the best would be you measure the L value across the output wires you assign as generator outputs and also measure the DC resistance across those wires. 
also, whatever other coil you wish to make resonant at a certain frequency, you measure its L value and the resistance but this latter is needed for matching purposes if any.

The Resistance of my center Bias coil, that I wish to make a resonant tank is 1 ohm.  All L values listed in above post that you quoted.

If the output frequency is 70 Hz, and your 6 coils have .6H inductance then the needed capacitor for resonance is 8.62 uF  (4 pieces of 2 uF, a 470 nF and a 150 nF, all in parallel to make up for the 8.62 uF)

Hi Gyula,

Ok, I think I have all the measurements you need and highlighted them in the quote above.

Thank you,

Bruce

[tak22]

@synchro1

I'm all in on the "figure 8". So far I've acquired 4 square loop ferrites (FERROXCUBE TN36/23/15-3R1) and I've found a core manufacturer that is willing to make tape wound toroids with holes/slots with any available material and in any size.

Next step is to get a diamond drill for the ferrite cores and determine a good material/size for the tape wound, but I'll probably test with the ferrites before tape as they ain't cheap to have made up.

Have yet to pick out a magnet for the ferrites as it'll take a little more knowledge than I have right now.    More research/learning ...

And I'd like to thank Lumen for bringing this patent to our attention! Thanks!

We probably should have a separate thread for the "figure 8".

tak

[jaculat]

NerzhDishual

maybe because you use 220 and 100 ohm R3 resistor... try smaller like 5-10 ohm

[Airstriker]

Keep on trying Synchro in regards to the "Figure 8".  Don't give up. 

The Perminvar alloys, Conpernik, Isoperm, and powdered irons have a near 0 hysteresis loss, according to the 12th page of this article and can now be viewed on Scribd without the need to download it to your computer, http://www.scribd.com/A/28789552/SURVEY-CHARACTERISTICS-AND-EVALUATION-OF-HIGH-PERFORMANCE-MAGNETIC-CORE-MATERIALS
 
GB

The same is nanoperm. Also near 0 loss: http://www.magnetec.de/pdf/vergleich%20nano-ferrit_1.pdf

[gyulasun]

[author=Bruce_TPU link=topic=8597.msg234579#msg234579 date=1269570988]
Hi Gyula,

Ok, I think I have all the A you need and highlighted them in the quote above.

Thank you,

Bruce
[/quote]

Hi Bruce,

Well, then the frequency is 70 Hz, you need  a 8.615 uF capacitor value for tuning out the .6H combined inductance of the 6 coils. And if you connect this capacitor in series with any one of the combined outputs of the coils, and then you use a 50 Ohm load resistance to close the other coil output with the cap's other end, you will get a matched condition for 70 Hz and the biggest power output possible from the 6 combined coils. Basically now you have a series resonant circuit at 70 Hz, with a 49.5 Ohm loss resistance due to the combined coils Dc resistances, this constitutes your generator inner impedance at resonance.
If you connect the 8.615 uF cap in parallel with the combined coils, then you would have to use a N:1 transformer to convert down the high parallel resonant impedance to your load value which can be any chosen value resistor that fits to the down convertion ratio of the transformer.
In this case the resonant impedance is as follows:
first the Q of the LC circuit is X_L/R=2*Pi*70*.6/49.5=5.32
then the resonant impedance of the LC is Q*X_L=5.32*263.76=1403.2  Ohm. If you wish to use ,say, a 50 Ohm load resistor, then you would have to use a transformer with a turns ratio of sqre1403.2/49.5=sqre28.347=5.32  If you happen to have a normal 60 Hz mains transformer, 120V AC to 24V then you could use it here for matching: its primary side would go parallel with the combined coils output and you load its secondary output with a 50 Ohm or so resistor. You may wish to retune the 70 Hz frequency slightly to compensate for the detuning effect of the primary transformer coil it may cause on the .6H - 8.2uF LC tank.
With a transformer having several secondary coils or taps you can math different loads to the LC tank, you do not limit yourself to the 50 Ohm single load value like in the series resonant matching case.

For your center bias coil with  .959mH the capacitor value for resonance at 70 Hz is 5390.5 uF.  This cannot be electrolytic type, so you have a hard task to find as many values as practical to get this hugh value from non electrolytics.

I would like to ask what are the capacitance values you included in your earlier message, where are they from?

[author=Bruce_TPU link=topic=8597.msg234330#msg234330 date=1269475183]
....
EDIT:
Center Bias Coil Inductance = .959 mh
Capacitance is aprox 48.8 uF

All 5 brooks output coils together at the output in parallel = .60 H  (problem with top coil leads, long story)
Capacitance is aprox 41.2 uF
[/quote]

Thanks, Gyula