Thanks for the video and the pictures, plengo.

Maybe your connection cables are already having enough inductance to get the LEDs to resonate at  about 8.5 Mhz
together with the board stray capacitance ?

Please try it with a ferrite choke in series with the signal generator output .

Please test then if you can get a neon bulb to light up,
this will then be a high voltage uptransforming.

Many thanks.
Regards, Stefan.

P.S: You are using 10 Volts peak to peak.
Dr. Stiffler is just using much less inpt voltage and
gets a gain power amplification from his ferrite core-coils...

Hi plengo
and all,
as long, as we don?t get the high voltage from a neon bulb
on another coil end ,so long we will not have any
power amplification.

I just tried a few more different cores and coils  with my function generator
going only up to around 3 Mhz, but all failed
to get me any high voltage on a neon test bulb.

NowI am going to sleep and whenI wake up I will
build up a 74HC14 oscillator which can go up to 20 Mhz with
square waves.
Then I will be able to finally see, if I can get the cores
better to resonate.

As long as I don?t have the right frequencies, there is
really no way to get it done otherwise...

Maybe Ron can still try his circuit on a different core-coil
setup, so we can see, how important this is.
Maybe he is also getting it to run on a standard ferrite
choke or a standard ferrite transformer with the right frequencies ?

Regards, Stefan.

Hi Fausto,  Maybe your function generator ground is actually connected to earth through the chassis and plug of the generator.  If this is the case then you have actually provided the second function generator connection in a roundabout way via your earth lead.  If you measure the resistance between the mains earth pin and the function generator ground with an ohmmeter you may find a direct connection.  Even if there is no DC connection (measured with your meter) there may be a capacitive connection which would do the same job at RF.

I wonder if Dr Stiffler is around to answer a question about his circuit #7 in figures 14, 15, &16?  I notice that there is of order 200mA (RMS) flowing through the earth lead.  This suggests strongly that power is flowing somewhere.  The question I would like to know is - is it flowing into the circuit from the outside, or out of the circuit from the ferrite core etc, or simply resonating back and forth (ie with power factor zero).

A simple measurement that would settle this question would be to simply show as a second trace on the CRO, the voltage on the aluminum pie can (which presumably couples quite well to the circuit via the backing plate etc).  The phase between any voltage appearing on the can and the current passing through the 1 ohm sensing resistor should tell us whether significant power was actually flowing, and in which direction.  It would also be important to know which end of the 1 ohm resistor was connected to the CRO ground for the measurement - as this should be made a common ground for both the voltage and current sense - as we would need to know whether to subtract the current sensing voltage from any voltage appearing on the pie can.  (I am sure you know Dr Stiffler how to keep the CRO grounds as short as possible to avoid inductive pickup - using the little earth rings near the probe tips is best and making sure the common earth point on the resistor is very close to the pie can connection).

@ Plengo
   I was looking at your last pic and see the ferrite antenna but no coil wrapped around it. In the circuit, it has a 9 turn coil on the outside of the antenna. This being an open ended drive on the coil with square waves. So this would make your circuit different than the one posted which makes it uncomparable to the original. Just what I am seeing.

thaelin

Hi All,

I slept on all I did yesterday and did some serious thinking.  What bothers me the most about the experiments with this device is I am trying to prove to my own satisfaction that there is POWER gain in the circuit and not just voltage gain which is obvious.  The reason I say this is as I linearly increase the input drive voltage, I get a linear output change to the 2-1N914's from the Main coil.  While I get a very defined resonant peak from the input circuit, and coupling to the output, I'm not getting the multiplicative power boost from the core.  Possibly my use of an unknown core material is the fault here.

The basic problem I must address is how to determine the base resonant frequency of the ferrite core where it pumps or multiplies the power presented from the series resonant input circuit.  How to determine this frequency must be determine as no core is created equal give or take.

Dr. Stiffler, can you give us any help on how to determine the frequency of any particular core (assuming you have a pumpable core) to get the power gain and then the obvious resulting resonance frequency of the input circuit in this strange little device?  I feel the need to back up and do some basic research into this so I understand what is going on.

Respectfully
Ben K4ZEP

Hi guys,

i just stumble upon LTC1799 low cost precision oscillator square wave. Costs 6.40euros at Conrad. Frequency range from 1khz to 30Mhz. One supply voltage ~5volts, one resistor to set frequency. 5pin package.

all the best,
MT

Hi Dr. Stiffler,

Thank you for your most excellent reply.  I realize you must be inundated with question.  You have given me more direction in reproducing your circuits and I thank you. 

Without a good driver on the board, the battery charging circuit only put about 4 ma into the battery so while it works, it does not seem practical at this time.  I am very interested in the ground driven circuit with no external excitation. 

I look forward to your next video.

Thanks again so very much.

Ben K4ZEP


quote author=RStiffler link=topic=3457.msg56902#msg56902 date=1193837938]
I am going to try to answer a number of questions at once and may or may not direct to a single individual.

@k4zep

Because all coils, signal generators, mounting boards, feed line length and the required L1 being off impedance or having to much inner capacity, there is no magical frequency. The frequency depends on the setup and unless they are replicated exact (as would be in a production line) they will all be different. On your replication I think you added the long feed (single line) in response to all the talk about the generator being coupled back, although this is self defeating. This long line forms a radiator (antenna) and not only does excitation escape, but it can couple back into the circuit out of phase and reduce your output, this is why in later circuits I use an onboard osc. and impedance matching driver.

I am quite surprised at what you stated about a battery maybe charging. I gave direct charging up a long time ago as it so upsets the circuit that it was not a viable direction.

The input impedance is Very High! this is why any measurement is difficult at best. Not using a ground return on the generator causes real pain in getting accurate readings of any series resistance in the single input lead. All test equipment must be floating (portable, battery operated, no mains) otherwise be prepared to go in circles.

Video #9 will show the best evidence on how to see potential results, although don't sit back and expect to jump in at the end. It takes feel and a personal understanding of the circuits to move on.

@All

I do not want to offend anyone, but I am not here to perform your experiments. If you want to go off with other coils and not use my circuits, you of course are free to do so. But it is not my research direction to do experiments that are not in my plans and end goal.

I hope you all do not forget about the first videos where the circuit is driving an incandescent light. This circuit is worth looking at as well as LEDS. The incandescent circuit will produce Heat in a load, where the LEDS cool. If you wish to stay with light, stay tuned, yet it takes few parts to also look at the other circuit once you have a working LED system.

Two hypothesis at this time exist on how the LED system is working, one will stay withing the Laws of Thermodynamics and the other (mine) will not, yet when looked at in total does end up not being a violation if looked at from the back forward, more on that later on my web site.

The circuit when properly designed emits a very interesting radiation field, this can be explored by probing the surroundings with a sense coil on an oscope. For those into the EE mathematics you will see at once that this field is not standard in its fall off from the radiator. This work is best left to those wanting to put some addition work into it.
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