Kapanadze Cousin - DALLY FREE ENERGY

[John.K1]

Hi Alien. Have to take a look at DS movies again. Thanks.

[itsu]

Itsu, the 3300pf (3n3), .0033uf cap with the 1k adj resistor shows to be a 300khz+ frequency now this is at a 1C charge rate, the question is will the gate trigger at 63% of the voltage? or will this take a second cycle? this second cycle will reduce the operating frequency to 150khz or a pulse every 2nd cycle of the grenade circuit.

Can you check the logic gates using your scope before and after each stage to determine how it is triggering prior to making any changes?

Hi Starcruiser,

i am not sure where you get these 3300pF and 1K values from as i presently have 330pF (C5) and 4.7K (R8), but i guess you mean that as an example.

Anyway, i have measured on the 4046 pin 4 output (triggered on) with the purple probe and measured pin 3 (delay) with the blue probe, first with the present 330pF cap in,
see first screenshot, then with a 3nF cap in, see second screenshot.
The max delay went up from 1.28us to 13.1us as can be seen in the screenshots.

But in both cases when turning the 4.7K pot (from 0 delay) to a something bigger delay, the output signal (Voltage / current) on the inductor coil drops and we fall out of lock soon.
I have made a video of this which can be seen here: https://www.youtube.com/watch?v=TEBCqigIdjs&feature=youtu.be

In this video, again voltage (yellow) and current (green) over and through the inductor/bifilar coil, purple is the gate signal to the kacher MOSFET.

So allthough the delay can be increased with the 3.3nF cap, i cannot use it as the PLL quits.

Regards Itsu

[verpies]

I tried to make up a block diagram, i think its something like the first diagram below.

That block diagram helps.

Are the pulses coming out of the CD4046 block driving the Yoke and pulses driving the "Kacher" in phase ?  Are they the same pulses ?

Are the pulse widths driving the Yoke, constant or dynamically varied in response to some feedback signal (as in the classical TL494 application) ?

How are you preventing the "Kacher's" RF burst from reaching the CD4046's feedback path ?


RANT:
A) The MOSFET Divers/Yoke form a switchable AC voltage source.
B) The "Grenade" inductor forms an LC circuit with some capacitance.

In order for A to drive B, the voltage waveform generated by A must be 180º out of phase with the voltage appearing at B (this is the oscillation condition for oscillator energy transfer mandated by circuit theory).  The PLL will automatically adjust for this to be true and as a consequence the PLL will be synchronized to the voltage appearing across the "Grenade's" voltage waveform. Even if you phase-shift your feedback signal by +90º then the PLL will adjust the phase by -270º to maintain that oscillation condition.

Hypothetically, if the MOSFET Drivers were current sources, then the PLL would automatically synchronize to the current waveform.
This is not a viable solution, but it helps to understand why the present PLL synchronizes to the voltage and not the current in the circuit that generates the feedback signal (the "Grenade").

Regarding the current transformer:
Properly burdened and unsaturated current transformer will have its secondary current in-phase with the primary current.
Unburdened current transformer will have its output shifted by 90º.

[Hoppy]

The inductor is the coil receiving the Kacher pulse. I don't fully understand why the Kacher should be synched to the inductor current waveform. Synched to the grenade current waveform would make more sense to me- I think??

[verpies]

The inductor is the coil receiving the Kacher pulse. I don't fully understand why the Kacher should be synched to the inductor current waveform. Synched to the grenade current waveform would make more sense to me- I think??

Itsu's block diagram does not make a distinction between an inductor and a "Grenade".