Quote from: verpies on May 06, 2014, 07:18:29 PM
So I surmise that Itsu's scopeshots are different because none of his channels are inverted

Well, i can "fix" that by swapping the W2 leads over.


Concerning the squeezing i can concure with TK's comments.

Regards Itsu

Well... the upper left pin of the pin 1 of the mc34063 is where akula's video indicate noise... so I don't see what that would have to do with wither a mosfet or a transistor in the spot that's been swapped...


so what pin 13 of the right side thing is receiving is a sine wave... I think everyone has demonstrated that... but does anything in side 2 really have to be there after pin 13?


right?  that's what I just saw when I rewatched it... and I think that's what you guys have.. pin 1 left, pin 13 of right in yellow and blue?


Edit: Prefix: Meant to say, I think you guys have the driver part of the circuit OK ... right? you're just missing sustenance.

so the sine wave on the yellow is a reflection of the sine wave that's on the blue that doesn't really do anything... there would have to be a diode between the cap and the coil, otherwise the first thing the cap will do is dump back into the coil and never have a chance to power the chip... which is reflected back to the primary and ends up being the real power to the load...

Quote from: TinselKoala on May 06, 2014, 09:34:05 PM
Sigh....

I apologize for having a better screen resolution on my scope.....   

(Note that the frequency of the sinus and bursts is about 300-310 Hz, not the  higher figure given in the "measurement" box.)

hi Tinselkoala,

Long story short -Tinselkoala you have successfully replicated the waveform as revealed by Akula."I can feel you are really close"


After seeing the recent replies from you with Akula screenshot.

It just hit me  "peak burst" isn't as high or higher than the sinewave at pin 1.This is it "the missing ingredient" i have found out why the device you have built wasn't going into overunity(forever) mode.
Do observe carefully at the edited Akula screenshot as attached where we can see the burst is higher than the sinewave at pin 1 before diode.
This burst is what making his device run in over-unity mode without needing external power source.

Solution-
At this moment what i can think in order to resolve the issue your having in order to get your "burst peak" higher than sine wave is to do a basic modification to the circuit schematic itself.

My justification in editing this circuit as attached-we know that higher dc source or boosted dc source in this case will produce higher "Bemf"/Burst peak as compared to using the lower voltage source which was in this case 3volt or little less."This is a known fact lower dc voltage source will yield lower bemf even if pulsing at the optimal frequency"

-------------------------------------------

Another /not recommended /crazy/alternative way(But does not give the solution) to get your circuit to go into fake ou mode without battery once oscillation started is to inject BURST signal(With higher peak than sinewave) at the pin 1(MC34063) but triggering signal should only start at the right point in sine-wave.
"This 2nd part maybe a time wasting suggestion"

I also noticed that ... he has the scope ground connected to the board... that means he's grounded too... could be floating power back from there... (more probably if it's a battery powered meter, but grounded none-the-less)