Kapanadze Cousin - DALLY FREE ENERGY

[ARMCORTEX]

1-90 mhz is being a bit optimistic for a high voltage high frequency generator. Lets stay within the limitations of a flyback plz. Unless you know of some easily obtainable transformer wich I dont know.

Verpies you raise some good points, but no amplifier is perfect. The mazilli is almost perfect, especially when you wanna step up to 20 kv+ voltages. But I see what your saying, it couldnt  be a fast sweeper thats for sure. So I am probably just gonna use a class A mosfet amplifier like I made, those are durable if you keep the mosfets cool, I am not sure if the DC level bias would work tho with a flyback, it should if they are equal, dont see why not.

If the Mazilli oscillation depends on c1, then the load doesnt really wanna oscillate that particular way, it just wants to do that because of c1. So we might was well call it an oscillator that has the advantage of being an amplifier as well, and an already high voltage one, contrary to the others. Its a triple advantage not to mention its efficiciency and its clean waveform.. Changing c1 over and over will take alot of time. So I am seeing how to make something that will end up saving me time and annoyance.

The switch errors would be resolved by something cheap, time. With a 10 turn it wont be so uncontrollable.

I found some relays that would work for 2.50 each, not so bad.

[verpies]

1-90 MHz is being a bit optimistic for a high voltage high frequency generator.
Lets stay within the limitations of a flyback plz. Unless you know of some easily obtainable transformer which I don't know.

I never even mentioned driving a transformer at 1MHz.

Verpies you raise some good points, but no amplifier is perfect. The mazilli is almost perfect,

I never advocated using a perfect analog amplifier to force drive a transformer over a resonant drive.
I merely underlined the difference between power oscillators and power amplifiers.

The Mazzili oscillator is far from perfect, just take a look at its asymmetrical current waveform through its choke.  Besides this amplitude asymmetry, its output waveform significantly deviates from a sine shape because the transistors switch in a rectangular manner.
An LC circuit driven by a square wave will never be spectrally pure even with ZVS.

I still think that a resonant primary winding drive is the most efficient way to go and it's an interesting project to improve on the Mazzilli circuit by stabilizing its frequency (make it load independent).

You may find this document interesting.

[itsu]

 
As promised, another yoke with mica insulators inbetween the both splits.
Both primary and secondary coils cover the whole yoke, the splits are half way underneat both coils.

Primary is 2x 21 turns of 2.5mm2 solid copper wire, 2x 59uH
secondary is 60 turns of 1.5mm2 solid copper wire, 478uH

Working at 24V with 5.6nF capacitor and a 5mH choke.
Input 337W, output (eyeballed) 200W.

No indication of "cold electricity", but this yoke also shows the "normal mode" and "special mode" states, where in the "special mode", the yoke produces strong audible signals in the 5 to 2 KHz range.
"Normal mode" will be between 100KHz (5nF cap) and 3KHz (3.4uF cap).

I tried severall combinations again of caps (also my stacked caps), chokes, loads and voltage (24/12V).

Video here: http://www.youtube.com/watch?v=ZLh4tOiiRT0&feature=youtu.be

Regards Itsu

[d3x0r]

Video *shrug*

I have a mazzilli driver now; very simple, had my diodes in the wrong places and mosfets backwards lots, but otherwise very simple   Blew up my first one with 600V mosfets attaching a charged capacitor backwards... but anyway, down to some 200V max; but they're basically the same. they stay fairly cool up to 30W. 


The resonance does depend on the load, and on L1 and on C1... and any other coils that are around picking up current.


I've been using my bifilar mobius coils; with the 1"(2.5cm) wound with 160 inches of wire... I used a bifilar wire to 80", doubled again, so it's a quad with a loop, took the 40" length and wound 12 turns, connected all in series, with a center tap for the power... (24 turns total each winding from center) Across this I have the Cap of course; also across there, I have 2 LED loads back to ground.   One load is a large amp sink with 12V resistance; the other is several LED panels in series for 60V resistance.  This makes the oscillations very asynchrounous so there is a very long pulse and a short pulse... Probably, almost 1/6th the (probably 1/5th being 5*12V series panels)


I have to use a supply voltage of slightly over 9V to get 60V out; at 5.5V input, the 12V string lights up.


This small 1" coil performs the same as a larger coil (8" loops) with similar turn count; with the 2.2nf cap they oscillate at 40-60Khz...  This is much lower than the resonance I got for driving it with an open ended signal at +/-2.5V , 1-2Mhz.


and my very large coil produces better voltage at lower drive for similar current draw (15"loops, 100's of turns)


The don't have a resonance like the simulator showed.. with an air core, it is a very DC pulse... , the high(not very high) voltage spike was showing up on everything as a 5V signal.... like the normal toroid I have in the center of the 8" coil.... if I connected a scope to any free end I got the same 5V draw; and lower when disconnected.  this isn't as much of an effect with the 1" coil. 


I put my 8" in the 15" and am able to get a resonance of +200V on the large coil driving the inner one with the mazzilli and misbalanced load.  Wish I had a higher (impedance?) load for the other side... I hesitate to use that word, everyone always tells me I use it wrong, and actually mean resistance, but it's not resistance.... and if I just use a diode with a high backwards threshold, I should be able to dam up the resonant voltage.  (Ya, good thought, but then use higher voltage tolerance mosfets, these are only 200V now, and I popped 2 more)


... I should try and take the load off a secondary coil instead; maybe that will reduce the impact on the primary




source voltage has a large impact on the frequency.  Lower voltage is higher frequency.. Increased voltage is decreased frequency although  larger voltage potential increase

[NickZ]

Last version
Dual heatsinks with bigger ceramic resistors 2 kohms,  IN4007 diodes, 400v cap between battery rails.