Just some comments on the VIC in general, after trying to model it in the simulator...
The chokes are a 1:1 transformer, positive voltage of any waveform and magnitude is sent through the positive choke and creates a 1:1 mirror version of this in the negative choke.
The negative choke is grounded, so it has nothing to do with the secondary, even when it is connected to to the secondary without a ground, it still produces the same waveform because the secondary goes from zero to positive, and the negative choke goes from zero to negative.
The secondary can be used to create any voltage setup you want, this is then sent into the positive choke, so long as the chokes are 1:1 you will get this mirrored on the negative.
The reason the magnetic fields of all the coils are aiding is simply because that's how you create a negative voltage. To illustrate this point, think of a center tapped transformer that is grounded in the middle, all the coils are wound in the same direction, magnetic fields aiding, but on the bottom side of the transformer you pull out a negative voltage equal and opposite to the top side of the transformer.
This is why the VIC still works without a center tapped secondary... you might think, and I did for a while, that it doesn't make sense to get an equal and opposite voltage out of each end when the secondary+positive choke is two coils above ground when you only have the single negative choke below ground... and it's because the secondary is irrelevant to the chokes 1:1 bifilar action.
Of course in the perfected design the secondary is resonating with the chokes, but I wont get into that now, I just wanted to point out how the chokes work in this manner.
The chokes also have other important characteristics and functions that i'll play with more later, such as distributed inductance and capacitance, inductive reactance, frequency doubling with blocking diode and collapsing magnetic fields... lots of fun.
Well, that's the most difficult part of the equation!
I'm still learning things about transformers.
As we know, all inductors have capacitance and all capacitors have inductance at specified frequency. We do want resonance to occur in this circuit, Yes? So why do we see a LCR circuit as different parts?
Did Stan designed his VIC transformer inductor to have "parasitic parallel capacitance" or "distributed self-capacitance" which also resonates with the choke "parasitic parallel capacitance"? Then you can see the LCR circuit without a Capacitor symbol in it. Don't see one in Stans circuit, but he talked about resonance, right.
I was testing a little transformer.
Prim. 1,8Ohm 3,25mH - Sec. 16Ohm 41,07mH. Used in an old PHILIPS TV.
Pulsing (DC 0-12Vpp 50%du)
When hitting resonance at about 150kHz it's generating a beautiful sine-wave 210Vpp AC signal. So the transformer acts like a LCR circuit.
If you put a DIODE at the AC output, you get different frequency (Unipolar Pulse) signal, then feeding into a choke... also hits resonance on that. To only thing the transformer must do is step-up the voltage from 12 or 24V DC to more, we want that, because it's creating huge EMF in the choke. The WFC cell acts as variable resistor (dielectrics), when little current is passing it increases resistance to a certain value the cell has...(electrolysis part) it steps-up voltage? When this value is reached you could gate this circuit (restrict more current).
The main problem/solution could be the "parasitic
parallel capacitance" value of a inductor.
Why did Stan used cavities? Did he match capacitance (lower frequency)? PLL could be used for keeping it in resonance too.
Correct me, if I'm thinking wrong here.
Question @Dynodon:
Dynodon, have you seen capacitors at Stans place, connected at/in some circuit (alternator/VIC)?
Think about a FBT resonating at 15kHz AC, that connected to a diode and choke, resonating on "parasitic
parallel capacitance" for optimal amp restriction, diode has no influence in this circuit.
Remember what's happening when you put a diode in a LCR circuit, it doesn't resonate!!!
br,
webmug
