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  #1  
Old 03-09-2011, 06:13 AM
bussi04 bussi04 is offline
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Default Oscillation of a blocking diode in a DC circuit

Analyzing the simply looking Stan Meyer VIC transformer circuit enfolds that all componentsī behaviour is far away from trivial operation .

There are 2 primary questions popping up to my mind:

1. what resonant interaction is meant, what components are interacting in resonance?

2. how can a serial RC component oscillate in a DC driven circuit?


Asking the question how a serial LC circuit can resonate I got an initial push by the Steven Meyer patent http://www.globalkast.com/docs/steph...0050246059.pdf showing an "impedance matching circuit" (circuit-1).



That looks a bit complicated because itīs driven by a 3 phase sine generator for 3 separate cells consisting of 3 coaxial tubes each.

Reducing complexity to a single phase gives the following circuit (circuit-2):



Further reduction to the positive path replacing a single cell of 2 coaxial tubes by a resistor gives the following circuit (circuit-3):




Now the circuit looks a bit similar to the Stan Meyer VIC circuit (circuit-4):



What Steven Meyer states is that there is an oscillation at Testpoint 1 thatīs intensifiying gas productions at the steel electrodes in the
water bath.



Doing a Spice simulation gives the following oscillation (circuit-5):



You can see that oscillation (V(tp1) starts at 5.5 ms when the voltage at R5
(V(n002)) gets less than the supply voltage (V(n001)).

Initial test has proven the simulation results and Steven Meyersīs statement:




Reducing complexity once more gives the following circuit (circuit-6):



Interesting is that now there is an oscillation at V(tp1) without an explicit capacitance in the circuit .

the oscillation starts when supply voltage V(n001) changes from positive to negative.

Thatīs the point where Stan Meyerīs statement of the blocking diode as an electronic switch gets a different meaning.

In fact the diode in conducting direction behaves like a voltage source while itīs behaviour in blocking direction is like a capacitance

At least we have found the missing capacitance in the serial LRC circuit .


So we can see:


The blocking diode itself has a special behaviour that must be integrated into the overall VIC circuit behaviour!

... to be continued soon ...

bussi04
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File Type: jpg 2011-03-09_135039.jpg (26.7 KB, 42 views)
File Type: jpg 2011-03-09_133758.jpg (84.0 KB, 40 views)
File Type: jpg 2011-03-09_141818.jpg (208.3 KB, 40 views)
File Type: jpg 2011-03-09_142538.jpg (228.9 KB, 39 views)
File Type: jpg 2011-03-09_145724.jpg (44.7 KB, 41 views)

Last edited by bussi04; 03-09-2011 at 11:57 AM.
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  #2  
Old 03-09-2011, 11:15 AM
bussi04 bussi04 is offline
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Default Working parameters for oscillation of a blocking diode in a DC circuit

But what are the working parameters for the oscillation of the diode?

Quote from http://www.google.de/url?sa=t&source...TQNTx2T_wptGTQ:

Quote:
Diode junction capacitance

An ideal diode is completely characterized by its I-V curve. It conducts current in the forward direction and essentially no current in the reverse direction. Its behavior is the same independent of frequency. In addition to this static behavior, there are additional effects in real diodes due to two charge storage mechanisms. The first charge storage mechanism is charge storage in the depletion region of the P-N junction and in the neutral regions adjacent to the depletion region. The circuit manifestation of stored charge is capacitance. The capacitance associated with the P-N junction depletion region is called junction capacitance and is in parallel with the ideal diode. Recall that capacitance relates an increase in voltage to the charged stored (Q = C V). The junction capacitance is not important when the diode is forward biased for two reasons. The first reason is that the voltage across the diode and thus junction capacitance is essentially constant (0.7V) and thus no current flows through the capacitance. The second reason is that what little current does go through the junction capacitance is much smaller than the forward current and thus can be neglected. On the other hand, the junction capacitance can be important when a diode is reversed biased for two reasons. The first reason is that the reverse diode voltage is not in general constant. The second reason is that the reverse leakage current through a diode is very small and thus the current through the junction capacitance can be much larger than the reverse leakage current. The junction capacitance is important in power electronic circuits when the diode turns off due to the very fast changes in reverse voltage, square waves ideally have infinite dV / dt at their edges.
...
The second working parameter is described in the same source:

Quote:
Diode reverse recovery

The second charge storage mechanism at a P-N junction is charge stored in the neutral regions adjacent to the junction. The amount of charge stored is proportional to the forward current and the proportionality constant is called the transit time and has the units of seconds.

The transit time varies from ms to about 10’s of ns depending on junction processing. This charge storage mechanism is very nonlinear leading to a very nonlinear capacitance. The stored charge is significant for forward bias and nearly zero for reverse bias. This charge storage has a significant effect when the diode is supposed to turn off, delaying the diode turn off. This turn off delay is called reverse recovery and the delay time is called the reverse recovery time. This effect is very important in power electronic circuits. The reverse recovery time is close in value to the transit time, but not exactly equal to it. The reverse recovery time depends on the circuit the diode is used in while the transit time is a characteristic of the diode. The basic diode rectifier circuit shown in Fig. 2 can be used to study diode reverse recovery. The resistor Rsense can be thought of as the load for the circuit or as a resistor used to sense the current in the diode. Ideally the voltage across the resistor can never go negative. With a real diode the voltage can go negative for a short time called the reverse recovery time.
The figures and the formulas can be looked up in the source of quotation.

Further informations and calculations for a simple single diode circuit can be found at

http://services.eng.uts.edu.au/~venk...1/ch02s1p1.htm

and at

http://www.google.de/url?sa=t&source...Xf2A66zT8Np47g.

Thatīs a lot of calculations and parameters as "parallel plates area" that are not available for end users.

So the diode junction capacitance shall be measured.

How to do so is described at http://www.google.de/url?sa=t&source...TQNTx2T_wptGTQ already mentioned above.

I think that diode junction capacitance and diode reverse recovery in case of the Stan Meyer VIC are not neglectable because the resonant charging choke is meant to release charge when supply voltage collapses. That way a shift in supply voltage direction is mandatory.

To make things a bit more complicated diodes in reverse operation are known to show non linear behaviour. there are applications like creating white noise for random number generation etc.

In the VIC application itīs quite reasonable that this non linear or chaotic behaviour of a diode is also a part of the overall oscillation process.

Further informations can be found at http://physlab.lums.edu.pk/images/3/...sing_chaos.pdf where our simple diode circuit there labelled Figure-9 shows unexpected results.

Enjoy!

bussi04
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  #3  
Old 03-09-2011, 11:54 AM
bussi04 bussi04 is offline
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Default Re: Working parameters for oscillation of a blocking diode in a DC circuit

To make your own simulations you can use an unlimited version of Spice free of charge.

Download LTSpice at http://www.linear.com/designtools/software.

The appended file simulates circuit-6 of the first post as a startup.
The file is for Spice and has extension .asc .
So please rename the file from pdf to asc before you can use it for LTSpice.

bussi04
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Last edited by bussi04; 03-09-2011 at 02:04 PM.
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Old 03-09-2011, 01:52 PM
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h2opower h2opower is offline
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Default Re: Oscillation of a blocking diode in a DC circuit

Hi Bussi,

I think you are on to something, I will begin testing sometime this month as all the parts are still coming in. I do note that "T3" should have a time that is only one TC of the leakage of the capacitor so it will only lose 36.2% of it's voltage between charge times. As our objective is to ionized the water molecules to the point where they start ejecting electrons and keep it that way. This process breaks down the water molecule for those electrons are the nuts and bolts that are holding the molecule together.

The blocking diodes I will be using for the isolated pulsing transformer are called "Hex Fire" and have very fast switching speeds of around 35us. With these rounds of test I will be able to determine just what the VIC Circuit is capable of as a whole. I still need the split phase pulsing for the electron extraction circuit to shift the collapse pulse coming from the second choke to the filament wire. For in that situation the water capacitor has more energy than the filament wire and will go to charge it, thus creating light or electron flow towards the blocking diode. All of my testing should begin sometime this month and it will give us all some much needed answers.

h2opower
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