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edited: 01/30/2017
Here is a lot of information of the VIC and WFC. This is a (resonance) AC analysis without the BLOCKING DIODE placed in the circuit.
If you noticed the WFC in the circuit Fig 7-8 Matt posted from the TB. You see the WFC with a Cp and a Re. Cp is the parasitic (parallel) capacitance and not the cell capacitance. Re is the resistance of the cells or ESR (Equivalent series resistance).
Now using a model in LTSpice, I match or balance the B+ and B- choke outputs using the properties of Cd, L of the coils. Two equal |Z| peaks at highest voltage and lowest current. Using a k (core coil coupling factor of 0.53 or 53% based on opposing coil mutual inductance).
The result is a charge curve.
So how does it behave in a real setup?
Not obvious to me what sets the maximum voltage.
Dig a little deeper hax. What frequency does DC operate at? It will pass through an inductor, but not a capacitor. So it must be 0 Hertz then right?
Well, if it's zero Hertz and it's not a sine wave, it must contain every possible harmonic in existence, but yet it still cannot pass through a capacitor in steady state. So let's change the type of capacitor. Let's use instead a negative inductor, DC can pass through that. Do we know of such thing that appears to have capacitance yet is a dead short to DC?
We sure do. Stan's WFC. Actually a negative inductor.
This negative inductor then at its SRF is a very high impedance and can charge up, but the moment that resonance is taken away, it's a dead short to itself, current flows, the capacity it has accumulated has to go somewhere. Me thinks it makes gas man.
Here's where things get tricky. We need the VIC to have the same SRF as the WFC, then by way of sympathetic vibration, the WFC will resonate in-phase with the VIC. The WFC charges up, then we break resonance with a gate and bam, the WFC charge implodes in on itself.
What we don't want is the VIC and WFC becoming a tank circuit where they need each other to function in resonance. Instead the VIC is a tank circuit by itself, as is the WFC. We just want both of them to operate at the same frequency in-phase. We pump the VIC up to its SRF and the VIC will do the same to the WFC since it's connected.
Just thinking out load here. If this is all hogwash, I mean no harm.
Dig a little deeper hax. What frequency does DC operate at? It will pass through an inductor, but not a capacitor. So it must be 0 Hertz then right?
Well, if it's zero Hertz and it's not a sine wave, it must contain every possible harmonic in existence, but yet it still cannot pass through a capacitor in steady state.
L/R time delay circuit
The idea of this circuit is simple: to “charge” the inductor when the switch is closed. The rate of inductor charging will be set by the ratio L/R, which is the time constant of the circuit in seconds. However, if you were to build such a circuit, you might find unexpected oscillations (AC) of voltage across the inductor when the switch is closed. (Figure below) Why is this? There’s no capacitor in the circuit, so how can we have resonant oscillation with just an inductor, resistor, and battery?
Inductor ringing due to resonance with stray capacitance.
All inductors contain a certain amount of stray capacitance due to turn-to-turn and turn-to-core insulation gaps. Also, the placement of circuit conductors may create stray capacitance.While clean circuit layout is important in eliminating much of this stray capacitance, there will always be some that you cannot eliminate. If this causes resonant problems (unwanted AC oscillations), added resistance may be a way to combat it. If resistor R is large enough, it will cause a condition of antiresonance, dissipating enough energy to prohibit the inductance and stray capacitance from sustaining oscillations for very long.
Interestingly enough, the principle of employing resistance to eliminate unwanted resonance is one frequently used in the design of mechanical systems, where any moving object with mass is a potential resonator. A very common application of this is the use of shock absorbers in automobiles. Without shock absorbers, cars would bounce wildly at their resonant frequency after hitting any bump in the road. The shock absorber’s job is to introduce a strong antiresonant effect by dissipating energy hydraulically (in the same way that a resistor dissipates energy electrically).
When I got my new bench DMM, one of the first tests I did with it was to place two six inch square plates of stainless steel with some Mylar in between them and measure the capacitance. The shiny new meter jumped right up to 2000pF--plain as day, that was a capacitor. So I took the Mylar sheet out and just placed four 1mm spacers on the four corners, so air was now the dielectric. The shiny new meter couldn't read anything. I could touch one of the plates and it would see that--what do we call it? Stray capacitance?
I'm clearly thinking there needs to be resonance within resonance--one works the coils; the other works the cell. One is a harmonic of the other and that harmonic is probably so high we can't even measure it with the tools we have.
"stray capacitance"
Ever get the feeling the cell is just along for the ride?
Am I mistaken or do you have it figured out?
Not obvious to me what sets the maximum voltage. Your scope-shot looks like you are approaching 1000 volts. How do we boost that one order of magnitude?
I have little doubt if these same engineers were tasked to analyze Meyer's VIC and engineer a solution that could be easily replicated, they could do it.
Am I mistaken or do you have it figured out?
Not obvious to me what sets the maximum voltage. Your scope-shot looks like you are approaching 1000 volts. How do we boost that one order of magnitude?
Figured out what exactly? What I try to understand is how the VIC transformer behaves. Stan talks about unipolar voltage pulses going into the wfc. But how is this accomplished using VIC resonance.