WFC VIC
Started by unknown · · 434 posts · last reply 2 May 2014
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#76 ·
I have a question that I want to be some attention to. A while back I thought this problem over and worked it out and had to come up with a formula for this situation. Well as Stan states in his papers that the chokes act as a frequency doubler, then you cannot use the basic series LC formula 1/(2pi* sqrt(LC)) to find the Resonant Frequency. So i came up with a formula to find this resonant frequency.
Here is an example:
(http://www.globalkast.com/images/tonywoodside/LCcircuit3.png)
if you pulse the Primary @ 5khz, the Secondary will also pulse @ 5khz, the chokes will have 5khz going in but will have 10khz coming out so that the Capacitor will be hit with a 10khz frequency!!!
So for a normal LC non-doubling circuit you would have the following:
Primary pulsed @ 5khz the LC resonant frequency for a setup with the Sec+L1+L2= 9H and C= 1.6nF Resonant Freq. = 1327 Hz
Now this same set up as a LC Frequency Doubling circuit would give the following resonant frequency:
Primary pulsed @ 5khz the Resonant Frequency = 938 Hz
So as you can see we have a lower Resonant Frequency from the same circuit and the only difference one is configured as a frequency doubler. This has to be accounted for in Stan's setup!!!!
-Tony Woodside-
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#77 · date not recorded
The 20ma's is what my power supply shows being used.It's not read with a amp meter.That is the actual power going into the primary right from my power supply.
One other point about frequency doubling.It isn't doubled through the chokes,it's doubled because of the blocking diode.The diode creates the double pulse.Even Stan states that fact in his New Zealand video.Also search the net for diode frequency doubling.I was just reading about that fact last night.
I have never seen this doubling effect myself,but I am seeing the frequency cut in half with this setup right now.My frequency generator is putting in 20khz,and I'm reading 10khz at the cell.Not sure what that's all about.I will retest again once I get my scope working or get a new one.These frequencies were taken with a Fluke DVOM.It's got me stumped,because before I would see pulse for pulse.In 5khz and out 5khz.
Don -
#78 ·
I have seeing the doubling effect however i was using 2 diodes for this. There were two coils one connected thru a diode to the secondary and in series with the cell, and the other (bifilar) connecter to a diode on one side going to the cell positive, and the other side of this coil only connected to the cell negative side. It gave me the exact waveform stan show, but only having tap water. I could not replicate the effect again as the diodes got destructed. they were rated 600v 70amps. I need to buy some more and do more test.. I would need also a better scope to be sure of this. However this schematic i have posted before. Is this one...
attachment_6266 Foto criada em 2010-09-14 às 19.56.jpg
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#79 ·
What are these called?
Will a massive ferrite core work for the VIC instead of laminated? Lamination sellers have minimum orders of €500 or 1000KG
attachment_6268 switch.jpg
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#80 · date not recorded
Just a thought, in the picture in post 10, I see what I think is a green coil between yellow and blue coils. I would assume by looking at the cavity between the chokes that the dementions are the same between the lower bobbins. If I'm completely wrong or just ignorant , someone please shed some light my way and explain what green (coil?) is. thanks....... -
#81 · date not recorded
Green coil = feedback to PLL -
#82 · date not recorded
Thanks Alan! -
#83 · date not recorded
NP.
How can I measure the HV output of the VIC with my (yet to receive) scope safely with a voltage divider or HV probe, without blowing up my scope? -
#84 · date not recorded
Well i don't have this answer, I had a scope and i burned it using a 1000:1 probe... the probe was rated at 40kv, maybe was my fault by having exceed a lot this voltage during the tests... -
#85 · date not recorded
Damn, that sucks. Could you repair it? -
#86 · date not recorded
I have found ferrite EE-cores, how are they clamped together? -
#87 · date not recorded
not yet, i left it in italy...
you could use some tape or anyway you find easier. -
#88 · date not recorded
Alan,you can use a voltage divider.Get 10 each 1megaohm resistors and hook them up in series.Hook one end to the cell positive and the other end to ground.Then hook the scope probe between the 9th and 10th resistor.That would be closer to the ground end of the resistor dividers.This will give you a divide by 10 output to the scope.With a probe set on 10x and this divider,you'll get 100:1 ratio.
Don -
#89 · date not recorded
NP.
How can I measure the HV output of the VIC with my (yet to receive) scope safely with a voltage divider or HV probe, without blowing up my scope?
Alan,
You are welcome to hook your VIC up to my scope with HV probe...
Takes a 1 hour drive...
Steve -
#90 · date not recorded
Cool, I'll let you know when I have finished it.
What kind of probe and scope do you use for this? -
#91 ·
[youtube]http://www.youtube.com/watch?v=5KfwiXJ8apk&feature=sub[/youtube] -
#92 ·
aha, amps and volts 180 degree out of phase...
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#93 ·
outlaw, Nice work, I noticed at 2:37 time in your vid two purple rays the camera picked up. A vid with T. Bearden and F. Sweet had them to. I remember some other vids having them but don't recall who they were. My question is could that be radiant energy that can only be seen with the camera? -
#94 · date not recorded
He says that he's getting 15W or so out while putting 187V*1.45A in, power factor close to zero, but not really zero (see it in the oscilloscope).
so lets calculate the power factor for this conversion cos phi = 15W/(187*1.45VA) = 0.055.
That may be what the oscilloscope showed so nothing abnormal here, i guess?
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#95 · date not recorded
haithar, you have some knowledge in this area, is the theory of or idea behind the bi-toroid transformer even reasonable?
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#96 · date not recorded
Can you explain more? I did not read this thread except for this last page with the supposed 0 power factor video.
A bifilar coil can either restrict current (in my tests a quadruplication of inductance if connected in a way that the current is aligned) or nullify inductance nearly completely (if connected in a way that the current is opposed) and if pulsed right double the number of pulses (did it with my own setup). What else is expected? -
#97 · date not recorded
sorry, i thought you were familiar with this guys other videos too, i think his basic idea is to have 2 cores in one transformer, the first core has a primary and secondary, and the second core only has the secondary on it, and somehow when you draw a load on the secondary the primary is unaffected, not sure how, but the idea is to pull current out of the secondary and not have it pull the load through the primary because the second core re-directs the flux around.... i don't completely get it, i was wondering if you did, or maybe anyone else? -
#98 · date not recorded
this video is the syncing of vco's which is what a pll circuit does?
phase locked loop = phase synchronized loop
[youtube]http://www.youtube.com/watch?v=gxkIhbY_KxU[/youtube]
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#99 ·
Hello outlawstc,
Yes the pll can do this, i'm not sure if he is using a pll. Actually if i understood well the guy is synchronizing the beginning and the end of the pulse with the square wave. If i understood well when the square wave is on, it turns off the saw oscillator and until the square is off the saw wave wont start. It is a kind of synchronization, like those for half wave bridge drivers.
Thinking yet better you can do this if the saw source have a trigger input so you can use logic Ics to accomplish this kind of sync.
This kind of sync is 20milion times better than dave lawton circuits cause when you adjust the right frequencies you will get the resonance pulses always being sent at the right time. This is interesting. What was that circuit from the video used for?
A pll can pick up a signal and tune into it, it can do this because there is a capacitor witch is the filter that stabilize the voltage of the VCO, when the received signal frequency is different from the signal it is generating and is in the bandwidth of the pll, it will automatically control the voltage of this filter capacitor to adjust to the frequency received. Stan created a resonant scanning circuit that was able to scan the frequencies by changing the voltage of the VCO arbitrary and when the frequency match the resonance, the scanning circuit turn off by receiving a signal from the pll lock in circuit witch is feature of the pll chips witch you can make to light a led to know if you are in tune and also to control logics when in resonance or out like turning on and off automatically the scan circuit.. I'm going to get my mind on work next year to have the power stage just like the one he proposed using bipolar transistors. Even if they are more sensitive, i think that they are faster and the most important feature is the current control.
Stan copied this from a Japanese patent witch he mentioned in the PLL patent.
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#100 ·
I have been working on drawing the dimensions for the delrin bobbin assembly.. heres where im at..
i decided to measure a serial port on my computer from mount hole to mount hole center.. its 1 inch..
i printed up a pic that matched the serial port in the photo to 1 inch.. so i guess you could say a decently scaled photo to match the real size?
here are the choke bobbin dimensions i came up with..
from a top view,
depth = the depth of wind cavity in inches
length = length of coil cavity in inches
width= the width of the bobbin (thickness of bobbin)
top view of choke cavity gives these variables
depth = .5"
length = 1.375
width = .625
side view gives these variables
depth= .625
length = 1.375"
width= .375
there is a variance of depth and of width between the two angles of view...
when it comes to using the multi layer coil formula how does one account for the 2 perspectives of bobbin dimension?
looking at stans vic, it seems that the bobbin core is not square but rather its rectangular.. is there a way to calculate a means between the 2?