Electrical igniter for gas engines A keystone to understanding by Magluvin

[Magluvin]

I know that some are going to come here and say this and that and even argue about what is going on here. Don let that disturb any progress along the way. At least we have a few here willing to explore the possibilities of what Tesla had in mind. I have seen no projects going on till now, just talk an argument.
So just stay focused and try some new things with each experiment along the way. We should be able to come up with something, if we really believe what Tesla had going really works. We are getting to some nitty gritty stuff that will tell a lot.

Mags

[delboy]

Delboy
I hear what you are saying, but are you suggesting that we built huge coils like Tesla or we wont be able to get the goods? Not many of us have a garage, much less a warehouse to build such a thing. We would like to work on small scale, also for cost of experimentation. I am not coming down on you. =] we appreciate the help tremendously. But I get the feeling you are saying we have to go huge for it to work.
Also, we are looking for more useful output and no lightning bolts jumping off of the equipment.   

If you can throw some tips toward those goals, that would be a great help.   

I am now hearing you on the air core transformer also. I had been thinking about that and the best way to go about it without getting too large and some criteria that would need to be followed. Like, should the secondary be inside of the primary, or does that not make a difference? Should there be spacing between turns of each coil, or can they be wound tight? And if so, how do we know what spacing to use? And is it that having a core material, ferrite, etc. , is it problematic?

You asked so many questions so here is what I can give answer...
About huge coils, I meant on air core for output of this device but later it can be used as design rule for input inductivity.
What I meant about input inductivity, you can go in 2 directions.
1.   If you use inductivity with laminated core material (Fe) then you must stay on low frequency of switching (f<200Hz) and then you will have compact form of inductivity having only several hundret turns of wire. Frequency is low because of core losses which are square dependent on frequency!
2.   If you use air core input inductivity then you must use coil wound on large drum from 0,5 to 1 meter having at least 500 turns to have big inductivity That will be expensive because used length of wire, but it is not limited in switching and no core losses
Now something about output of this device. Primary should be small inductivity because we want high frequency and high current to secure transfer of energy to coupled part of secondary for the next Q-amplification in second-ary stage
For example, if primary capacity is C=2,2uF and primary inductivity is one turn of wire(cable) diameter of 1 meter that gives Lp=3uH and alltogether gives resonant frequency of about 62 kHz. If input inductivity is for example L=0,5H that gives resonant frequency 151 Hz  but only because I neglect value of Lp comparing to L.
High current is where comes to problem with switch. Here is example. If primary capacitor is charged to 200 V and then discharged to primary let's calculate start peak of current.
First we will calculate impedance Zc=sqrt(Lp/Cp)=sqrt(3/2,2)=1,16 â,,¦ and that will give max current Imax=200/1,16 = 172 A but this is true only if switch contact resistance in state ON is neglect. In reality this is place where losses play main part, because any active resistance R will bring to fast damped wave, and we want oscillations to continue as long as possible.
Yes, secondary should be inside primary, like in all Tesla's transmitters and wound clockwise, looking from topview. Primary should be close to secondary as possible, and It will be enough for example only 5 milimeters spacing between primary and secondary, if secondary is grounded! Turns in secondary should be tight with minimal spacing. This depends on max expected voltage on secondary. For example , if we expect 200kV and we have 50 turns that gives 4kV per turn, it will be enough that spacing is only 2 mm.
About core material in output stage, hmmmm very problematic, because this is place where design is to go to very wide air core transformer and frequency should be very high that means we want small primary inductivity meaning no magnetic core material (no losses related to core)

[Qwert]

I want you guys to remind (I believe you have seen this already) Bruce TPU's observation/solution for a "sudden stop" (switch?):

http://www.overunity.com/index.php?topic=2300.msg221623#msg221623

Q

[Magluvin]

Thanks Delboy  ;]
I Was looking toward trying to make mini setups. More like ones that could be individualized for things such as ev's and computer ps, etc. The big ones are cool too. I just had some visions of small.
I suppose air core of the small type would be way high in freq. I was looking to stay a bit lower on the radar, of which would be good for all.
But I will keep playing around with it. It is neat stuff.
Thanks for the answers to all the questions. Sorry for so many. ;]

Mags

[baroutologos]

Hey mag,

Lately i have tried various things to test various concepts, yet all end up to predicatble failures. i am not concerned much about that. the only big concern i have is that in all experimenting history of mine had not any incidence that bears any actual promise.

I think i am losing my faith, since the only thing all expermenters here have is only faith... Anyway i have spent large sums of money (5000 USD last 1 1/4 year) to gather materials so as to experiment (in a noob setup) with almost any popular theory...

I think i will take a rest for a while. I will resume building as soon as Tito posts some diagrams for the ultimate goal.
I just hope he is not a hoax also.

Salutes for now