Kapanadze Cousin - DALLY FREE ENERGY

[John.K1]

Ok, I am kinda electronic an-alphabet, can somebody tell me, if there is something wrong with the connection of my gate driver with Mosfet and its protection.

What voltage of varistor should I use. I have some 150-250-1000V..

Thank you

[Tomtech29]

Yes, a current monitoring device, such as a CT or CSR in the LC circuit where resonance is to be tracked and maintained, is sufficient for a PLL to lock onto the i/v phase of the LC circuit.

Itsu has used a CSR in his version of the LC resonance tracking with PLL.  ...and I am not referring to his videos with the TL494 PWM board/chip.
PWM adjusts the amplitude of the LC oscillation through the modulation of the pulse width and the PLL tracks the LC resonance frequency throgh i/v phase feedback.  Both chips mate quite easily.

I do not judge your work and I do not dispute your knowledge ,and on the contrary respect of other contributions to the development of skills not everyone has a strong Page I also have moments of disbelief
what should work and does not work as expected.
This system of keeping feedback to the comparator operational amplifiers in any way resembles the effect of preserving capacity!
you're right that Pll sets current delivery by the dosage pulse width ok.
-but what about the capacity of the coil heats up?
I feel like high state of resonance plays a role "crossover"
why can not we repeat this controller?

[itsu]

  Perhaps Mag's driver controllers can adjust both frequency and duty cycle. As the TL 494 IC can't do both, at least not by itself, nor will the commercial TL board serve both purposes. As that TL 494 board is not a true PWM. Only provides a steady 40% duty cycle, on both sides.  But, it may be a good starting point, even at 40%. Worth a try, maybe...

Nick,

i think you overcomplicate things, the little TL494 circuit has a fixed frequency and fixed duty cycle, but as i have shown, this can easily being changed.
I don't know why you would want a variable duty cycle as the only thing you want is resonance of the inductor which can be achived fine with the fixed 40%
duty cycle as i also have shown.


Below is a picture of how the tl494 circuit is connected to my 2 MOSFET drivers (ucc37322's)
The snubbering (on the MOSFETs) i use is from Olegs green box diagram (R26, VD6/7, C15) assisted by 3 18V TVS in series across each drain/source.

In the mean time there are severall solutions presented here lately, so please stop complicate things, order some basic components and start building because you
won't find a 100% matched commercial solution


Itsu

[Tomtech29]

hi J.
my eye I intercede 10K resistor to turn off the transistor and zener diode are two cathode to each other 5V.
at which an acceptable voltage mosfet  opens 10 V? and this is a diode ultra fast

[John.K1]

hi J.
my eye I intercede 10K resistor to turn off the transistor and zener diode are two cathode to each other 5V.
at which an acceptable voltage mosfet  opens 10 V? and this is a diode ultra fast

Thanks Tom, yes- the zeners should be two, and as my mosfets are I RF3205 I will use 6V zeners , my mistake. I also increased the resistor to 10K. The diodes - I can use that 1N4007 or I have some choice of others (ex.  UF5408 ....)  What suits best?   Maybe varistor is not important? If -what voltage to use?

Thanks,