Kapanadze Cousin - DALLY FREE ENERGY

[TinselKoala]

  Pin #8, 11, and 12 are getting 12v. Through the 12v voltage regulators and filters. Clean signal at the gates, no signals at the drains. I'm going to look into this later today.
 
  EDIT: Check the current pic of the drivers, in my last previous post. I just added it.

You will have no signal at the Drains unless the load and its power are connected.
Then when load and its supply power are connected and the mosfet is OFF, the Drain voltage (referenced to Source) will be at the supply voltage, and when the mosfet is ON the Drain-Source voltage will drop to zero or just barely above zero.

I strongly recommend getting rid of the series resistor between the 494's pins 9 and 10 outputs and the pin 2 inputs of the 4420s. With a 1k pulldown _and_ a 1k series resistor you are effectively halving the voltage delivered to the 4420's signal input. The 4420 has internal zeners protecting the input, so you can drive it with the full 12 volt (or just under) from the 494's Emitter outputs. Just use the 1k pulldowns, without any series resistors between the 494 and the 4420s.

[NickZ]

  TK:
  I had previously installed two 10 ohm resistors from pin 9 and 10 to the fet drivers. But, those two resistors did not help, nor work any better.
  As I had mentioned in the previous post, the yoke IS connected. The power (24v, 10A) is ON to yoke, and the yoke is connected to the mosfets, their drivers, and the TL circuit. A load is on the yoke secondary 28t coil, a 10w, or 100w bulb. Makes no difference what bulb I load it with.
 
   Last night I changed the 20k pot on the duty cycle controller to a brand new 50k pot. But, the signals still mess up when the output pins 9, 10 show they are getting less than 4.5v. Signals are ok with 4.5 to 5v. Maximum voltage output from the 9 and 10 pins is 5.2v.
  So, the 20k pot that I thought may be damaged. It's not damaged.

   Seams like the driver inputs from the TL circuit need at least 4.5v. Or, something else is not right.
  I'll remove the 1k resistor to the drivers pin 2 and 3 today, and report back.

   What does seam to help somewhat, is grounding both of the grounds, from the TL, as well as from the drivers to earth ground.
That helps to control the glitches, to some degree, but it still does it, just not as bad.

   So, what Itsu and you are saying is that the diagrams used by Stalker showing the same system of NO snubbers on the drains, except for the MUR's, are not correct??
  I previously did not notice any spikes at all, or hardly any, when the system was working.

[Hoppy]

   So, what Itsu and you are saying is that the diagrams used by Stalker showing the same system of NO snubbers on the drains, except for the MUR's, are not correct??

Its not a case of being correct or not to fit snubbers, as none of us know whether they are needed to produce a self-runner. A chaotic signal may be necessary - who knows for sure?? It may be that none of the circuits so far posted are correct for self-running.

[NickZ]

  Agreed.
  But, my problem for now is not the spikes. It's the no output issue, and messy signals, instead. The device will not fire up, even when the scope is showing nice clean signals.

[Hoppy]

  Agreed.
  But, my problem for now is not the spikes. It's the no output issue, and messy signals, instead. The device will not fire up, even when the scope is showing nice clean signals.

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?