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Stan’s Legacy

WFC VIC

Started by unknown · · 434 posts · last reply 2 May 2014

  1. Dynodon

    #201 · date not recorded

    Kali'
    Your way off with your turns.
     
    Here's the resistance values that I took from the coils with a Fluke meter.
    Primary-10.5 ohms
    Secondary and chokes-70-75 ohms
    Feedback-11.5 ohms
     
    Now 29 gauge wire measures 81.83 ohms per 1000 feet,so I come up with the following
     
    Primary- 128 feet
    Secondary and chokes- 884 feet
     
    As for number of turns I come up with
    Primary - 600-650 turns
    Secondary and chokes - 3000-3500 turns
     
    Because they are hand wound and not precision,these should be very close.
     
    As for the 220 ohm resister,they were wired across the primary to restrict the current feeding it.10.5 ohms will make the coil heat up with 12 volts feeding it.Some of the coil pacts had three resistors across the primary,all of them were 220 ohm.The largest one was a 5 watt.
    Don

  2. Kali_ma_Amar

    #202 · date not recorded

    Thank you very very much. Again!
    As from the picture and your dimensions I would have guessed, one coil was about 1 inch long and 7/8 inch thick, with an inner thickness of 1/2 inch. Seems, like they were actually a bit bigger.
    You said:

    Quote
    Each leg was @ 2 1/2 inches long
    So you didn't mean the complete inner leg (where the coils go on) of both u cores together with this value?
    But 600 turns for the primary? If I look at the picture it's hard to believe, there are that many turns on that (well if it's bigger, that aren't that many layers anymore, makes sense).  Thank you again. It certainly makes sense, that the pickup has about the same Nr of turns as the primary. So as I understood you, the pickup was just one coil, not 2, like in the patent circuit. OK, that's not an important fact, I know...
    So the Primary to Sec/Choke coil ratio was only about 1:5.

    Were the resistors really across the primary or rather in series, which would make sense for a current restriction while driving. If they were across, they would have been rather an exchange for the freewheeling diode, which wouldn't make much sense.


    But for me it's still very interesting, that all the coils had the same number of turns. Up until know, I always thought the secondary needs more turns. If it doesn't, the circuit has to work differently than I thought at first.


    BTW: Am I the only one which cannot see any of Dons pics at the beginning of this thread?

  3. sebosfato

    #203 · date not recorded

    Kali'
    Your way off with your turns.
     
    Here's the resistance values that I took from the coils with a Fluke meter.
    Primary-10.5 ohms
    Secondary and chokes-70-75 ohms
    Feedback-11.5 ohms
     
    Now 29 gauge wire measures 81.83 ohms per 1000 feet,so I come up with the following
     
    Primary- 128 feet
    Secondary and chokes- 884 feet
     
    As for number of turns I come up with
    Primary - 600-650 turns
    Secondary and chokes - 3000-3500 turns
     
    Because they are hand wound and not precision,these should be very close.
     
    As for the 220 ohm resister,they were wired across the primary to restrict the current feeding it.10.5 ohms will make the coil heat up with 12 volts feeding it.Some of the coil pacts had three resistors across the primary,all of them were 220 ohm.The largest one was a 5 watt.
    Don


    Hello Don Thank you a lot for the info. When you say "220 ohm resister,they were wired across the primary to restrict the current feeding it.10.5 ohms will make the coil heat up with 12 volts feeding it.Some of the coil pacts had three resistors across the primary,all of them were 220 ohm."


    What you mean, by across? Between the primary leads? They are in parallel? 220ohms is the resistance of all together or individual if more than one?


    Is very interesting that he used 29AWG for the primary... I think that his thing consumed really very very low power...


    Don what was the inductance of each choke? Did you measured the secondary + chokes? the primary...?


    Kalli I can see the pictures normally try to check your browser configurations.





  4. Kali_ma_Amar

    #204 ·

    I personally guess he meant, they were wired in series. 3 220Ohm in parallel would be about 73Ohms. In series with the primary, a maximum of about 145mA through the primary would be achievable, which is really almost nothing?!?
    BTW: I think it's funny, that the three resistors happen to have the same value as the three coils together ;D .


    But I'm still puzzled by the overall figures. Namely, if the circuit was made like that, the voltage of one coil should never exceed the PIV of the diode, which is 600Volts. So if the circuit would develop any higher voltage, it would kill the diode. Sure the diode can usually withstand a bit more voltage, but not much. The voltage ratings are usually quite tight in semiconductors.
    Actually Stan claimed the same in his patent description of this WFC circuit:
    Quote
    The diode, of course, is selected in accordance with the
    maximum voltage encountered in the pulsing circuit. A 600
    PIV fast switching diode, such as an NVR 1550 high speed
    switching diode, has been found to be useful in the
    circuit herein.
    (As we know, the NVR 1550 is probably a text recognition error. Don told it was a MUR1560)


    Or another statement in the same patent:
    Quote
    In a typical operation of the cell with a
    representative water capacitor described below, at a
    frequency of about 5 KHz at unipolar pulses from 0 to 650
    volts at a sensed resonant condition into the resonant
    cavity, conversion of about 5 gallons of water per hour
    into a fuel gas will occur on average.


    (in this sentence I'm still puzzled by the claim of conversion of 5 gallons of water in one hour in one such small cell. For if really that much could have been converted, he wouldn't have needed 10 WFCs of this size to power his car?!? And I would have my doubts if it's actually physically possible to generate that much gas and have the cell still working, as you would actually also have to get this gas out of the cell again. If he meant 5 gallons of gas, this would also be strange, for this, even with 10WFCs would never be enough to power a car. Maybe this was a hypothetical value, which he came upon by measuring the gas output when he just let the cell work for a short time. This would mean, it would be theoretically possible, but not be really practical, therefore he needed more cells.)


    Now, if we look at the figures, you have given: A primary to sec/choke ratio of about 1:5, and a switching transistor (TIP120) which can only withstand 60Volts, you get some quite strange results. A 1:5 ratio would mean (without resonance), only 60volts (at 12v input) on the coils. With my circuits I get about a voltage magnification of 1:5 (on resonance), which would result in 300volts on the coils. Maybe by a good design you get higher here, say 10:1. Then you would have 600volts. And this would then also be the maximum of the diode. So in this relation the figures seem to fit. But this would really mean, that there was absolutely no "high" voltage in the circuit!?!?
    Additionally, if we look again at the driving transistor: If the resonance-voltage-magnification-ratio would have been more than 1:4, then you would have had to protect the transistor. E.g. with a freewheeling diode, like in the patent circuit.
    BTW: If there wouldn't be any resonance (capacities), the coils would now, due to the freewheeling diode also simply have this voltage ratio. E.g. if the voltage drop on the freewheeling diode would be 1.2V, then each coil would have -6Volts on it during off phase. Only due to the capacities in resonance this could be circumvented, and the freewheeling diode would then just draw quite some power again out of the resonator, which would decrease your attainable Q.
    It's interesting, that the TIP120 does have an additional diode in reverse, similar to a Power-FET. This means, that an additional diode in series, like in his patent circuit would be needed, not to limit resonance during primary on.


    From these figures I can only draw this conclusion: Either he didn't use high voltages in this circuit, but only to about 600volts (maybe a bit more), or he used another circuit-layout. What would have really interested me, would be, how the circuit card for the steam resonator looked alike. If the connectors were also just made for lower voltages, or if there HV-connectors were used?

  5. o-go-go

    #205 ·

    Does anyone know the exact dimensions of the WFC cylinders, the slots? It's very important!
    One guy suggests that WFC is a microwave waveguide. We can try this hypothesis. http://www.meanders.ru/meiers1.shtml (Russian)

    2-e important condition - to stimulate the process of gas a coherent source of light (UV and IR).

  6. o-go-go

    #206 ·

    Are there any specialists of microwave waveguides on site? I'm interesting to their opinion.

    Sorry for my English  :)

  7. Newguy

    #207 ·

    Kali'
    Your way off with your turns.
     
    Here's the resistance values that I took from the coils with a Fluke meter.
    Primary-10.5 ohms
    Secondary and chokes-70-75 ohms
    Feedback-11.5 ohms
     
    Now 29 gauge wire measures 81.83 ohms per 1000 feet,so I come up with the following
     
    Primary- 128 feet
    Secondary and chokes- 884 feet
     
    As for number of turns I come up with
    Primary - 600-650 turns
    Secondary and chokes - 3000-3500 turns
     
    Because they are hand wound and not precision,these should be very close.
     
    As for the 220 ohm resister,they were wired across the primary to restrict the current feeding it.10.5 ohms will make the coil heat up with 12 volts feeding it.Some of the coil pacts had three resistors across the primary,all of them were 220 ohm.The largest one was a 5 watt.
    Don

     
    For mutual inductance, measure the inductance of the primary and secondary in series, and then interchange the connections of one winding for a second reading. Apply the equation below:
    M=1/4 (Lserries+  minus Lserries-)

  8. Kali_ma_Amar

    #208 ·

    @newguy: I think this is too late. Don hasn't access to the original VIC anymore.


    Quote
    One guy suggests that WFC is a microwave waveguide.
    I'm no  specialist in waveguides, but IMHO the frequencies which would be involved in this theory are that ridiculously high and far from Stans used frequencies (<=10KHz), that I personally do not believe in this waveguide theory. But everybody is free to try.
    One thing is strange, though. Although the guy says to have read Stans patents, he says, Stan doesn't indicate the frequencies used, and that he guesses, they were below 50MHz. But Stan actually stated often the used frequencies. So I'm a bit puzzled about that.


    Quote
    Kalli I can see the pictures normally try to check your browser configurations.
    That's strange. I tried it with Opera and Firefox. Both are not able to load the picture.
    E.g. My browsers are not able to load this picture: http://www.ionizationx.com/index.php?action=dlattach;topic=1513.0;attach=6228
    I can load Pic Nr 6227 and 6229, but not 6228. There I just do not get any response from the server...

  9. sebosfato

    #209 · date not recorded

    Hi kalli,


    The charging choke 56 in series with the diode assure that the voltage is not limited to 60v... actually if you think about actually one of the chokes is subtracting the field... So he basically is applying 20v + 20 of the choke in series with the diode, than the other tube is receiving 20v max also per pulse.


    During the resonance energy will be accumulated in the vic, i can tell you maybe more than 1000 times more energy than the input can be developed there, for sure, the electrical resonance means recirculation of energy. So the "tuned" choke could actually achieve thousands of volts in my though if closed the circuit resonance with the ground capacitance relation to the cell.


    The smaller the capacitance the greater is the Q so with less amps you get higher voltage per amp circulating.


    HE could have worked with values like 50pf witch for a big choke still give us a relatively high Q resonance in real world.


    I'm going for 330pf with my cell (measured value)... Between my tubes i might have 1,8 nf but i can only measure the resistance, i already achieved 10kohms of resistance. This means that 1 amp passing thru it would develop 10kv. 
     





  10. Kali_ma_Amar

    #210 · date not recorded

    Quote
    The charging choke 56 in series with the diode assure that the voltage is not limited to 60v... actually if you think about actually one of the chokes is subtracting the field... So he basically is applying 20v + 20 of the choke in series with the diode, than the other tube is receiving 20v max also per pulse.
    I see it simply like that. You have three coils on a core, all the same. Two of them are opposing each other. So the final relevant voltage for your diode is the voltage of one coil. And this voltage cannot exceed 600volts. And as all your coils are on the same core, each coil is limited to these 600volts. Not one coil can go higher. For if it would go higher, it would act like a primary for the other coils, which would then also get a that high voltage, as all have the same amounts of turns.
    There's a massive difference happening if you put all coils on the same core, than if you have them separately. You just cannot separate their fields.
    This is the reason, why I first thought the SS wire is needed. For it would allow the coils to have more unshared field lines...

    But as we see from the 5-VIC-coil, this is obviously not needed. This VIC worked, and it worked just with all coils copper and on the same core...
    IMHO there would be only two configurations, which would allow it otherwise. One would be, if the core goes into saturation. Then the coils would become independent of each other, and the voltage could go high, without affecting the diode.
    The other would be, if one coil has massively more resistance than the others. This coil would have more "internal" voltage drop than the others. So the there would have to be two opposing coils and one coil with more internal resistance. Then you could go higher with the voltage of the opposing coils, without affecting the diode.

    Quote
    During the resonance energy will be accumulated in the vic, i can tell you maybe more than 1000 times more energy
    I don't think this is a realistic Q value for this kind of circuit with a core. The core losses are IMHO just too high. Just look at the datasheet of any core and at it's indicated core losses. And you also have to remember the distributed capacity of a coil. This is far bigger than 50pF. This is why Tesla used to wire his magnifier coils with big distances between each winding (although this reduces the L). For, as he said, otherwise the capacity is just becoming too big, to get a high Q.
    At least one thing is for sure: The coils in the 5-coil-VIC, that Stan used, certainly had quite a high distributed capacity, as they were "normally" wound with 3000 turns. I would say, that this capacity strongly dominates the resonance circuit. And also my experiments actually tend to show, that these are the important capacities...

  11. Dynodon

    #211 · date not recorded

    The 220 ohm resistors were like I said wired across the primary coil(parallel).A friend had talked with a coil manufacture,and they told him that 10.5 ohms coil would get hot,then he asked them what would happen if you were to wire a 220 ohm resistor across it,and he stated that it would run cooler.Not my words.
     
    As for the NVR1550 diode,there is actually a MUR1550 and a MUR1560.The first is a 500 volt,and the second was a 600 volt.
     
    Kali,as for your explaination of the voltage step up up 1:5 with 12 volts in and 60 volts out was a little confusing.But I believe I understand what you were getting at.
     
    You are stating that if you apply 12 volts to the primary coil,with a step up ratio of 1:5 you will then get 60 volts out to the blocking diode.Now in my testing of my coils,I have a step up ratio of 1:10 or as I would put it 10:1.So if I apply 12 volts to my primary I should get 120 volts out of the secondary.Right?
     
    Well when I test the output of my secondary without any load on it,I get a much greater step up than 10:1.I've seen several hundred volts.No just maybe that is what Stan is hoping for with his set up.Maybe because we are restricting amps with the choke coils that this high voltage from our secondary is able to stay high,because of the very low load.
     
    Under normal step up coils we are appling loads to the secondary output which pulls the voltage down to the actual ratio of the steup.So just maybe with the chokes restricting the amps,we are able to keep this higher voltage than the stepup ratio produces.Maybe it has something to do with the coils all being on the same core that allows  this greater voltage to be produce.
     
    Now again with my coil set up,of 100 turns primary,1000 turns secondary,and 2000 turns chokes,I have seen between 1kv-2kv at the cell.It it hasn't had any ill effect on the blocking diode.And my diode is the same rating as a MUR1560.
     
    Thats some of my thoughts on this matter as I have seen it with my own testing.
    Don

  12. Kali_ma_Amar

    #212 · date not recorded

    Really across it??? So how did you measure the primary resistance, if there were resistors in parallel? For that you would have needed to open the circuit. Or did you calculate it? Or how did you do that?


    If you get a higher voltage, than your step-up ratio, then you're either using it on a resonance, or you get a surge from the stray-inductance, or you are using it as a flyback. What does your scope say, when you just put a rectangular waveform on your primary and no load on the secondary? It should output also a rectangular waveform with exactly the step-up ratio. Maybe in the beginning of the rectangular you see a short spike (stray inductance) with some ringing afterwards.  OK, maybe Stan used these switching surges, who knows...


    Really? You have a 600PIV diode which withstands 2kv. I'm quite impressed. The only reason for this I could image is the very low energy oscillating, so that the diode capacity can handle this, but then the diode would be quite useless...???

  13. Dynodon

    #213 · date not recorded

    The primary coil was measured with the resistors removed.All coils were measured unconnected from the rest.
    All of my voltage measurements were taken at resonance.When pulsing the primary coil with square waves,you get sine waves as an output of the secondary.I would have to retest to see if the step up ratio shows up.
    Don
     
    Update:
    I just tested my coil setup and this is what I came up with,
     
    100 turns primary,  1000 turns secondary
    12 volts dc applied to primary
     
    Now I performed two test,one without bifiller choke coils on core (not connected to anything)and the other with chokes off core,then tuned to resonance with scope.
     
    First test without chokes showed @ 120 volts out of secondary, just hooked to scope leads, and resonance was at 57 khz.This gives you a 10:1 stepup.
     
    Second test with bifiller chokes on core and not connected to anything, gave @ 250 volts out of secondary,just hooked to scope leads, and the resonance was at 32.8 khz. This gave a stepup of 20:1.
     
    So there is something happening with all coils on the core.It doubled the voltage out of the secondary.
     
    Don
     
     

  14. Kali_ma_Amar

    #214 · date not recorded

    Quote
    The primary coil was measured with the resistors removed.All coils were measured unconnected from the rest.


    Wow, didn't think that you were that invasive during your "visit", to even take things apart. But if I would have had the possibility, I would've certainly done the same.
    I really think it is quite strange to wire resistors in parallel (at least at 12volts, this means a loss of 2watts, so no wonder he used bigger resistors here). This would only beware the coil from heat, if the current through the transistor is limited. But this doesn't really make sense, due to several reasons. First, you could have just fed the transistor with another base current, to get less current through the primary. Second, as the resistance of the primary is that low, compared to the resistors, still almost all the current would flow through the primary.
    IMHO it only does make one sense. As I already stated before, it would be like a replacement for the freewheeling diode. But these resistors would (instead of the diode) allow quite a voltage to develop across the primary (but on the other hand they would also limit the maximum voltage, compared to nothing in parallel). So the circuit would act like a flyback. All in all, this wouldn't astonish me, if we look at how the VIC was made. But what puzzles me, is that the TIP120 can only withstand 60 volts.
    If we look at how he wired the VIC, then it actually is rather a flyback circuit. Why? The secondary has only half the voltage of the 2 chokes in series. So the diode would be blocking, while the primary is on. When the primary is off, the diode would be conducting, as the 2 chokes have double the voltage than the secondary. So it would make sense, to have the primary in a flyback manner. But the TIP120 is only for 60volts, which is really not much for a primary flyback voltage (only 4 times voltage step-up would be possible, to a total of 4x5=20 step-up ratio from 12volts). And without any additional circuitry to help the TIP, it would live very dangerously (especially in a resonance condition).
    Sure if you do it like that you could have higher voltages than you PIV diode rating. But only in one way. Which means, the resonating voltage in the other direction would always have to be smaller. For this, the flyback energy surge has to go somewhere. The best candidate for this: The WFC.
    So it could maybe really be like this: The coils resonating, and every half wave, quite a surge is going through the circuit (when the primary is off). The good thing is, during this surge, the voltage could go as high as you like, the diode PIV isn't relevant here, as the diode is conducting. But two things would limit your maximum attainable voltage: First, the resistance of your circuit (the higher the resistance, the higher the voltage) and second, the primary transistor. If there would have been a different transistor, I would say, everything matches. But 60volts!?!
    If you do not protect the transistor with an additional circuitry (like the freewheeling diode), then this simply means, that the reverse voltage on your coils is not allowed to go beyond (60-12)volts*5=240volts, which is really not much...So I'm puzzled???


    Quote
    All of my voltage measurements were taken at resonance.
    As I said, at resonance you certainly get a completely different picture and aren't anymore only limited by the step-up ratio, but get an extension by the q-factor.


    Edit:
    @Don: You're sure the 57KHz is the basic resonance frequency of your coil, and not some harmonic? For actually. Under no load condition, in resonance, already with a step up of 1:10, you should get mucha higher voltage than just 10 times more. How are you driving your circuit? With a FET? Do you have the additional series diode?

  15. Donaldwfc

    #215 · date not recorded

    Kali, Don did those tests on his own coil, not Stans.

  16. Kali_ma_Amar

    #216 · date not recorded

    Quote
    Kali, Don did those tests on his own coil, not Stans.



    lol, yeah, I know. But we were mainly talking about the resistors in Stans original VIC.


    Additional thought: As two coils are opposing and have the same size, you could as well say, that you can take both of them away. Then you would just have one coil in a flyback circuit, which should do the same. So why are the 2 additional coils there? Everything can resonate. And as I have seen, from my experiments, the coils are able to resonate some AC through the WFC. So it would be now, like having some AC resonating though your WFC with some unipolar bangs everytime, the primary switches off. But as I said, this could only be, if the primary transistor could withstand more voltage...This really puzzles me...And it would also not really match the descriptions given by Stan...

  17. Dynodon

    #217 · date not recorded

    Kali,
    In Stans circuit,there is a 5 amp 1000 volt diode between the TIP120 and the primary coil.The way you keep explaining your ideas,sounds like your putting the TIP120 after the primary coil.That diode protects the TIP120 from high voltage back emf as I see it.
     
    Stan also put a diode across the inputs to the primary.From ground to positive.
     
    As for testing my coils,if you don't find resonance,the voltages are all over the place at any gien frequency,and the scope traces look like junk.
     
    Yes 57 khz is the primary resonance frequency with my coil.It is very easy to find,I'll take a picture and post here.
    Don
     
    Update: Pics added
     
    1st Picture primary resonance @54khz
    2nd picture out of resonance @ 2.4khz

    attachment_6808 attachment_6809 PICT0066.JPG PICT0067.JPG

  18. Kali_ma_Amar

    #218 · date not recorded

    Quote
    In Stans circuit,there is a 5 amp 1000 volt diode between the TIP120 and the primary coil.The way you keep explaining your ideas,sounds like your putting the TIP120 after the primary coil.That diode protects the TIP120 from high voltage back emf as I see it.
    I actually always thought, there must be a series diode, but I rather talked about the freewheeling diode. This diode in series, IMHO doesn't (just) protect the TIP, but rather protects the resonant circuit from the primary, so that the primary doesn't take a lot of power out of the resonant circuit. The internal reverse diode of the TIP would otherwise clamp the reverse primary voltage to 12volts. If anything is resonating above that, it would take energy out of the oscillator.

    If the TIP wouldn't have a reverse diode, or if the reverse diode amperage is too high, or if the diode is too slow, the TIP would need protection by the diode. Unfortunately in the datasheet I have about it, these values are not indicated.


    But why did he use there a 1000volts diode, but just a 600v diode in the VIC-circuit??? Seems quite strange to me...
    One guess could be, that he needed a diode for higher currents in the VIC. For when the surge would come, for a short moment quite a current would probably flow for a short time. This would again match Stans notes on Graneaux' experiments (high current density for a short time is needed, followed by a reverse voltage).


    Quote
    Stan also put a diode across the inputs to the primary.From ground to positive.
    I'm not quite sure what you mean here. By across the primary, and from ground to positive (as one side of the primary isn't connected to ground). Do you mean a freewheeling diode? But then the resistors would make absolutely no sense...

  19. sebosfato

    #219 · date not recorded

    Now i understand across thanks don.
    I already used this in the past, cause i wanted to assure that the pulse didn't come back in the mosfet.... Kali this resistors automatically cancel the chance of it being driven in the kick back or flyback mode, one of the reasons is that it would consume the discharge pulse... Other reason is that the core must be free to oscillate.





  20. Kali_ma_Amar

    #220 · date not recorded

    Quote
    I already used this in the past, cause i wanted to assure that the pulse didn't come back in the mosfet.... Kali this resistors automatically cancel the chance of it being driven in the kick back or flyback mode, one of the reasons is that it would consume the discharge pulse... Other reason is that the core must be free to oscillate.
    The problem is it would only "consume" an amount of the discharge pulse at a time. Let's say, e.g. the primary had 1 Amp flowing when it is switched off. The one Amp "wants" to continue to flow. Therefore the voltage immediately rises until one amp can flow through the resistors. This would mean, that the reverse voltage would then rise to 80 volts (1A*(70+10)Ohm). And these 80 volts are then again stepped up, by the usual Step-up ratio. This is, how a flyback works. Usually you don't take just a resistor for this, but rather a resistor and a capacitance (to get a nice smooth waveform). But principally it remains the same.
    And as strange as it may seem. As you also indicated: With these resistors you take out much much more energy out of the core as if you would by taking a freewheeling diode. For with the diode, you would always only have the diode voltage drop (e.g. 1.2V). So if 1Amp wants to flow, it would just dissipate (1.2V*1A+10Ohm*1A^2=11.2Watts) instead of the resistors ((70+10)Ohm*1A^2=80Watts)...
    But by introducing the resistors you would exactly get, what a flyback is for, you would get a short high reverse voltage spike. The only limiting question would be  how much current flowed in the primary, when it becomes turned off. If this current is so low, that the return voltage spike is neglectable, then you are right, then it would just dissipate the remaining energy. But unfortunately it would also take energy out of the resonance circuit. But if the current is really low, it would even take less energy out of the oscillator than with the diode.
    The calculation is quite easy. For 70 Ohms, it would start to act like a flyback when the current in the primary gets higher than 150mA (12V/(70+10)Ohm).

  21. sebosfato

    #221 · date not recorded

    I see i understood. Like having also a diode in series with the capacitor and the resistor in parallel, for protection... Snubber...


     But this voltage will be lost voltage only in the primary i'm right? how about the time constant? Would be not very slow. Maybe if we knew the primary inductance we could try to shoot some calculations..


    I think it could also be a choice for the filtering of a frequency...




  22. Dynodon

    #222 · date not recorded

    These are the diodes I'm talking about. Q9 is the TIP120
    Kali can you see my pics I post?
    Don

    attachment_6810 PICT0068.JPG

  23. Kali_ma_Amar

    #223 · date not recorded

    Yes, the newer ones I can see. This is the patent circuit.
    So you are saying, that the original 5-VIC-coil, you looked at, had actually really 3 220Ohm resistors in parallel with the diode and additionally a freewheeling diode (an additional 1N4005 diode in parallel to the primary)? Am I correct?


    The funny thing is, that a 1N4005 is actually extremely slow (it's made for use in mains frequency designs). So it would start to really switch long after any flyback pulse would have been made...

  24. Dynodon

    #224 · date not recorded

    Yes how many times do I need to repeat myself.Everything I tell people here is just how it was.Not every coil pack had three 220 ohm resisters on them,I don't know why,but most just had one 5 watt 220 ohm.The one I took the picture of had three.
     
    I don't know why he had them different,I can just tell you how they were.Some of his things just don't add up at times.
     
    Those two diodes were on the VIC circuit card and not in with the coil pack.
     
    I only use the diode in between my mosfet and primary coil.If I add the diode across my primary,it makes the current jump by about 10 times.From 30 milliamps to 300 milliamps,so I don't use it.
     
    Don

  25. Dynodon

    #225 · date not recorded

    Here's the front and back of a VIC card
    Enjoy!!!
    Don

    attachment_6811 meyers pics (69).JPG