Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

Nick,

i  believe you are using the below shown TL494 circuit, please confirm.

I build it on a breadboard using the same components (20K instead of the 10K pot, 10nF cap instead of the 8200pF).

Pin 3 is floating, but when connecting it to pins 2, 13,14, 15, it shuts down the output signals.

With the frequency pot to max frequency (30KHz), and the duty cycle pot to max (45%) i get the screenshot 1 output signals.
With the frequency pot to max frequency (30KHz), and the duty cycle pot to min (0.45%) i get the screenshot 2 output signals.


These signals are fairly stable, so not dropping or having oscillations when turning across the pots ranges, however look at the ground levels.

Ooops,  my TL494 was running on 4.7V or so, therefor these low signal
The floating seems to come from the 1K resistors, they are to high, probably lower value resistors will fix this.

Will do some further tests tomorrow.

     
i would suggest to turn to another circuit, preferrable the one shown by verpies with the 3 pots (frequency, duty cycle and dead time):
http://overunity.com/12736/kapanadze-cousin-dally-free-energy/msg502495/#msg502495

Regards Itsu

[penno64]

Consider this -

https://www.youtube.com/watch?v=WV3posVDqJs

Penno

[NickZ]

  And if you perfect the system, you end up with what Vasmus has shown.

   Itsu, well well, I must thank you for doing such tests on the TL494. Much appreciated.
   The circuit that I built was a combination of three different circuits diagrams. I started with what we call the TopRuslan 7 video device information and schematic. But, since I had the same or similar problem with fet overheating and firing at the same time.
I then tried the PinoyTech way of connecting up the TL494. But combined with what Stalker is doing, and what Ruslan had done.
So, it's a hydrid TL494 to TC4430 circuit, test. And I'm still testing...

   I suspected that on your previous video, that the reason you kept the 45% or so duty cycle, steady there, NOT turning it too much. Was due to the same reason. And perhaps other guys have had the same issues, and may be part of why we get no where.

    Yes, I can verifiy that I can do the same thing, and show the same type of controlled square wave, as you just posted.
       HOWEVER,
             and it's a BIG However,  the rest of the system does not work as it should. Or at least as I was hoping. And as you have seen, neither does yours. Especially when connecting it all up to the rest of the whole set up.
   So, I ask myself WHY? What is wrong with my third try at this type of circuit? As ALL three TL494 that I've built all mess up the signal, big time, and then burn all my fets, smoke my several in line chokes, etz...and, I don't have much hair on my head left to pull.
   So...What to do? 
   Build the 4th TL494 circuit... you say...
   I don't know about that, But... I'll get to the bottom of this. One way or another.
   Maybe circuit 4 will be my lucky number. A winner, for a change.

   Itsu: Thanks again for the test. 
   Yes, I can verify that we are probably seeing the same or similar loss of signals, and especially the loss of output signal at pin 9 and 10, of the TL494 chip.  I think that there is where we/I should take a closer look. As to what can or should be done to modify that same circuit.  As mine already looks like a burnt up cutting board, from all the repairs and mods. But, it works, just like yours...
  Just a question if you remember. Did your previous TL494 builds smoke up the fets, like mine used to do? I'm hoping that it won't do it so bad, any more.

   I'm going to connect my contraption all back up to the grenade and kacher, and turn off all the lights... and turn it on...
for some fireworks.

   TK:  I hope that you're tuning in today, I know how you like fireworks. I won't disappoint you...
   Could be a dud, though...

  As TK had mentioned, the Texas Instruments TL494 is best. It cost 4 times more than the knockoffs, but... It's probably worth it. At least for what we need it for. 

  This Pinoytech design below is how my TL494 circuit is currently set up. Just the TL circuit, though.
Keeping in mind that all these untested circuit diagrams, schematics, images and even videos can come as a can of worms. Only one way to know if it works, is to build it.

[seychelles]

HI MATE WHERE CAN I BUY THIS PCB.

[NickZ]

  I don't know where or if the pinoytech design is available from him, or not. As he has not been posting after he put up the whole collection of the images of his design on this thread, it's a take off from the TopRuslan 7  (Oleg) design. And it was similar to what I  am building up on a single board, but in my own way.