Kapanadze Cousin - DALLY FREE ENERGY

[NickZ]

  Itsu:
  Great to see you here, and taking the time to help me out. Which you have done, very well.  I'll explain...
  After watching your video, I realized that I had NOT included the orange capacitor on my Mazilli circuit. In your case the 2.2uf orange cap. As it is that capacitor that filters and limits the run away or "kaotic mode", as you call it, and therefore also controls the over-heating condition of the circuit. Which in my case was immediate.  And I neglected to install that cap, and so, that IS the problem with my circuit. I have No cap on the primary coil's input side.
  I'll fix the issue tomorrow, as it's almost midnight here now.
  I did make a video about it, but I didn't figure out what the problem was during the making of the video, until after I watched your video a second time. Then I realized the problem, no tuning cap, and solution, just install one where is should go.
Simple! It only took a year to figure it out... with a little help from my friends.
 
   So, now I can remount the 24v yoke back into the circuit, and have another go at it.
  I'll post the video that I made tonight, tomorrow, and hopefully I'll have the circuit working as it should, soon. Then I can get back to tuning, and scope shots, and,.. the fun part.  As I've been kind of bummed about it all lately.
        So, thank you very much for all the help Itsu, TK, Hoppy, and all, I really appreciate it.
                                                                                                                                      NickZ
  Here's a picture so that you can see where I went wrong:

[itsu]

Nick,

great to hear you found the problem.
The capacitor is needed and you can use it to tune the frequency in combination with the primary coils.

Looking at your picture, its obvious its missing there, but as it could be in the (closed) box, no alarm bells went off with us.

In my setup, the mazilla is rather efficient, the 25W input is lightning up the 40W bulb halfway (eyeballed).
When upping the load to 10 x 100W/220V bulbs, my batteries (2 x 12V 7Ah in parallel) could not handle and i had to change to the bench PS.
But that ran into current limitation at its 10A max.

Finally it was able to light 2x 100W/220V bulbs rather brightly (i know, that does not say much) with 17V / 10A input, meaning 240V RMS @ 16KHz on the bulbs, without the MOSFETs etc. getting too hot.


Regards Itsu

[Tomtech29]

Hello, I would like to join in this topic I made a short video
https://www.youtube.com/watch?v=Su96us29i0w
due to the different types of components and type ferrite core
there are other operating frequency from 1kHz 9Khz to idle without load and capacitor,However, the distance winding or empty gap between them It causes a change in inductance and there are problems: heat release and energy consumption.
Placing a winding tight and close together it is very difficult for such a shape, the ferrite.
I conducted tests on three ferrite cores,I observed a very different kind of work and no-load power consumption was 1.7Amp.2Khz  to 3.7Amp. 9Khz the latter is Yoke.

NickZ this system works is a certain frequency and core saturation point ,This inverter system at the discretion of changes I used:

2X ultrafast STTA1206D
2X 5W 470 Ohm
2X Irfp 460
2X zener diode 15V.
choke 100 uH.(choke size :ferrit 15.78mm-35.71mm (35t. coils of 1.5 mm-wire).
-let  know how you take the voltage at the gates and how much eats amperes?

[TinselKoala]

Nick, you have been using No capacitor in the tank circuit? Insert "facepalm" symbol here.


Well, at least you have that straightened out now, hopefully. What were you putting into the Resonant Frequency calculator if you didn't have a capacitor in parallel with your coil? Why have you been showing schematics that included a capacitor, if you weren't using one?

This capacitor is a necessary part of the output tank circuit of a Mazilli/Royer oscillator! You can't just leave it out!!! Especially if it appears on the schematics you present for us to discuss !!!!!

This capacitor and the inductance of the coil winding determine the frequency that your oscillator will work at. If you leave the capacitor out, your oscillator will be running at a very high frequency if it works at all, and it's no wonder that the mosfets are overheating and blowing. See the Resonant Frequency calculator I've linked to several times. Put in "zero" for your capacitance and see what happens to the frequency, for a given value of inductance !!

[TinselKoala]

Hello, I would like to join in this topic I made a short video
https://www.youtube.com/watch?v=Su96us29i0w
due to the different types of components and type ferrite core
there are other operating frequency from 1kHz 9Khz to idle without load and capacitor,However, the distance winding or empty gap between them It causes a change in inductance and there are problems: heat release and energy consumption.
Placing a winding tight and close together it is very difficult for such a shape, the ferrite.
I conducted tests on three ferrite cores,I observed a very different kind of work and no-load power consumption was 1.7Amp.2Khz  to 3.7Amp. 9Khz the latter is Yoke.

NickZ this system works is a certain frequency and core saturation point ,This inverter system at the discretion of changes I used:

2X ultrafast STTA1206D
2X 5W 470 Ohm
2X Irfp 460
2X zener diode 15V.
choke 100 uH.(choke size :ferrit 15.78mm-35.71mm (35t. coils of 1.5 mm-wire).
-let  know how you take the voltage at the gates and how much eats amperes?

You cannot use the "nameplate" Wattage values of your lamps as a "measurement"!!  These values are only ratings of power consumption when the bulbs are supplied with the steady voltage for which they are rated. You must perform actual measurements of power consumption while being driven by whatever driver you actually are using.

When you hook up all the loads, your "400 Watt" lamp is glowing rather feebly. There is no way that lamp is actually dissipating 400 Watts. Don't believe me? Connect it directly to the mains it was designed for, and see how bright it is then. You are badly misinterpreting your system. You are definitely NOT putting out 980 Watts.

You cannot use the nameplate ratings of bulbs to claim a power output !! This is completely wrong !! You must make actual measurements of the instantaneous voltage x current supplied to the load in order to see what the actual power output is. You should be able to do this with your oscilloscope and an inline current-viewing resistor of the appropriate value on one channel for current, and the actual voltage on the other channel, then using the scope's math capability to multiply those two traces together. The scope shots you have presented in your video are nearly useless, all I could do is confirm the scope's frequency readout and also see that your zener diodes do appear to be limiting your gate voltages.

Your Mazilli oscillator is running at such a low frequency, without a parallel tank capacitor, because you are using a heavy inductance, and your IRFP460 mosfets themselves have considerable capacitance, as well as a much higher on-state resistance than the IRFP260n mosfets. Compare the Data Sheets for the IRFP460 and the IRFP260n mosfets.