Kapanadze Cousin - DALLY FREE ENERGY

[zalmoxis]

tune your coils and resonance like this .. : https://www.youtube.com/watch?v=o_6dW11SodE
pay attention at the bulb filament

[NickZ]

Are you saying that you have no output at all now, irrespective of frequency and DC adjustments? Did you test the mosfets in accordance with the info posted by me and Verpies?

  Yes, both Fets are new now. And they tested ok.  I'll see if I can find another new one, but I doubt that I have any more around here.
  I also just replaced the 20k duty cycle pot, for a 50k pot. No difference, signals still mess up.
  Here is a video I just posted on YT:
   https://www.youtube.com/watch?v=RUZxyuzfYHA

[itsu]

Nick,

what frequency range of your TL494 are we talking about?    Show the scope time base setting so we can calculate if you don't know.

Loose the DMM across the TL494 pins, its not designed to work on high frequency (KHz) dc pulses, my Fluke seriously distords the output signal when connected, see my latest video.
Just look at your scope, and when the messing up appears, try to resync using your scope trigger setting knob to establish a steady signal again.

What is your C4 capacitor value (1nF as in pinoytech design?)


When frequency set at 20Khz @ max duty cycle (44%) and at 12V input voltage i have the following voltages on the TL494 pins (measured using the scope):

1:  ground lvl
2:  +5V
3:  ground lvl
4:  ground lvl
5:  3.7Vpp sawtooth signal
6:  +3.7V
7:  ground lvl
8:  +12V
9:  pulsed +12V @ 44% duty cycle
10: pulsed +12V @ 44% duty cycle
11: +12V
12: +12V
13: +5V
14: +5V
15: +5V
16: ground lvl


Itsu

[NickZ]

   If your TL494 is not wired like the Pinoy diagram, we may not have the same signals at the same pins.
   But, my el cheapo volt meter seams to be able to read the output at pin 9 and 10 with no problem. If there is no signal, I get no voltages across it, or pin 4. But, if there is a signal there on the 9, 10 pins, it ranges from 5.2v down to 4.5v without glitches.
   The duty cycle runs ok at maximum 44% or close to it, and the frequency runs at the highest setting, or close to the highest setting. So, that is where I can get a signal. Probably not at 20KHz, or where I need really it to run at. 5Khz to 30Khz, or so.
   But, still NO output, at all. It does seam as if one or both fets are fried, but they haven't even had a chance to even burp, yet. And I also had re-checked these new fets yesterday. When I saw that there is nothing coming out at the yoke's secondary coils, from the 3t, or 28t coil.

   My voltages are somewhat different, but I'd rather not have to do all the math on each pin of the TL chip, if connecting the scope. I'll show the full scope reading and setting, next video.
   I had ordered a new multi-meter that can also read frequency. But, the small one you see is in the video was what was brought to me this time, from the US. Next time I'll get the one I asked for, I hope. You know that doing the math is not my thing.
Rather be fishing...

   The voltages on pin 2 will vary from about 10v down to 0v, if I wait for the 50v 4.7uf cap to totally discharge.
    The scope directly on the TL pin 9 and 10, and ground, show just the same thing as what I showed on my video, when showing both scope probes on the gates of the fets.
    PIN  #1  ground.
           #2  10v down to 0v
           #3   0.v
           #4   0.69v
           #5,  1.62v strange scope signal
           #6,  3.56v
           #7,  ground
           #8,  11.98v
           #9,  1.18v to 5.2v sometimes, depending...
           #10, same as pin 9
           #11, 11.98v
           #12,  11,98v
           #13, 14, 15,  4.6v
           #16  ground.

[Hoppy]

   But, still NO output, at all. It does seam as if one or both fets are fried, but they haven't even had a chance to even burp, yet. And I also had re-checked these new fets yesterday. When I saw that there is nothing coming out at the yoke's secondary coils, from the 3t, or 28t coil.

But, did you test them properly as suggested by Verpies and me??