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Author Topic: S1r PDF coil description and discussion !!!!  (Read 146242 times)

capacitor70

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Re: S1r PDF coil description and discussion !!!!
« Reply #135 on: July 17, 2008, 05:42:17 PM »
But don?t you limit with the red coil the discharge current of the inverter 330 uF cap ?
red coil have only 32 turns it will not limit current. we can go down to 20 turns it works....

Also the current pulse is backtransfomed into the green coil and
capacitor blocks backtransformed pulse, No problem of this pulse to HV coil because it have 50Kohm resistance...
thus steals energy there...

So is this circuit better than the diodes circuits ?
Yes, it is much much better than diodes, cheap and simple... no heating

What is wrong with the diodes circuits ?
Diodes get very hot and energy loss in diode is too much, it melts solder joints of diodes after few minutes of running

hartiberlin

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Re: S1r PDF coil description and discussion !!!!
« Reply #136 on: July 17, 2008, 06:08:08 PM »
Hi capacitor70,
why don?t you just do it this way ?

You might need to raise the limit voltage of the 330 uF cap a bit,
but as the coil together with the 330 uF cap acts as a lowpassfilter,
the fast sparc is not able to charge up the 330 uF cap much more,
so the voltage will not go much higher at the 330 uF cap.

Then when the sparkplug is conductive the few turns of the coil
will not hinder the current much.

And for the diode at the ignition coil it should
be sufficient to use a cheap 1N4007 or faster MR5404 diode
or something simular.

Regards, Stefan.


capacitor70

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Re: S1r PDF coil description and discussion !!!!
« Reply #137 on: July 17, 2008, 06:14:55 PM »
why don?t you just do it this way ?
Then when the sparkplug is conductive the few turns of the coil
will not hinder the current much.

And for the diode at the ignition coil it should
be sufficient to use a cheap 1N4007 or faster MR5404 diode
or something simular.

This circuit requires very large inductor to stop HV, Main problem with this circuit is HV will not rise, HV flows through the 330uF capacitor. And no plasma spark at all.
If large inductor it blocks current of LV side.

How it works ?
1. Capacitor charge to HV and first spark plug acts as switch, switch triggers at high voltage
level this plasma channel discharges capacitor in the green winding transformer
primary. also LC resonance works here
2. If we directly connect HV to transformer(coil) green winding it will not allow
voltage to rise enough to trigger second spark plug.
3. Once high voltage spike is given at primary, secondary generates High voltage
and it is connected in series with LV so LV+HV(secondary) makes spark and plasma is generates...

How to test ?
1. Connect primary as shown in figure.
2. Connect spark plug to secondary, Do not connect LV.
3. Once you see spark at secondary, its done,
4. Connect LV in series with secondary and spark plug.
5. Due to low number of turns on secondary it will allow LV through spark plug...

hartiberlin

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Re: S1r PDF coil description and discussion !!!!
« Reply #138 on: July 17, 2008, 07:03:55 PM »
This circuit requires very large inductor to stop HV,

Are you sure ?
Did you test it ?

I guess your small ferrite toroidal coil would be okay with about 20 windings..

Quote

 Main problem with this circuit is HV will not rise, HV flows through the 330uF capacitor.

HV can not flow through the cap, cause the coil would block it,
so the HV will ignite the arc at the sparkplug...

Quote

And no plasma spark at all.
If large inductor it blocks current of LV side.


It must be tested, how big this inductance and its
ohmical resistance must be to block the High Voltage and
still conduct the low voltage current efficiently.

If you use the right choke as this coil, it will be much easier and
parts saving than your circuit.

But anyway, most important is, that we have either circuit that just works..

The question still is, if such an exploding arc ingnition system is
able to run a car efficiently and how much electrical power
is needed to run a car at what miles per hour speed.

Regards, Stefan.

capacitor70

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Re: S1r PDF coil description and discussion !!!!
« Reply #139 on: July 17, 2008, 07:27:22 PM »
Quote
HV can not flow through the cap, cause the coil would block it,
so the HV will ignite the arc at the sparkplug...

It is tested already and it dosen't work at all, tried lot of combination but its not working.

Quote
But anyway, most important is, that we have either circuit that just works..
Yes, I tried my coil circuit with different coils size, core material and turns, it works nearly in all combination....

Quote
The question still is, if such an exploding arc ingnition system is
able to run a car efficiently and how much electrical power
is needed to run a car at what miles per hour speed.
My observation is it dosen't require more energy because plasma have zero resistance. P=I X I  X R



mrock

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Re: S1r PDF coil description and discussion !!!!
« Reply #140 on: July 17, 2008, 07:30:44 PM »
C70 What if, corrected

capacitor70

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Re: S1r PDF coil description and discussion !!!!
« Reply #141 on: July 17, 2008, 07:35:29 PM »
c70, What if.

No, difference, more easy to ground...
same is possible on HV side capacitor can be at upper or lower side no matter...
Its all series combination, anything at any place will do...

vrand

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Re: S1r PDF coil description and discussion !!!!
« Reply #142 on: July 17, 2008, 08:02:48 PM »
working coil circuit, ferrite core
12:32 transformer ratio

Hi,

Interesting circuit, simple and looks effective. Have you tried powering an engine with it?  Looking forward to seeing your video of it.

Regards,
Michael Randall


forest

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Re: S1r PDF coil description and discussion !!!!
« Reply #143 on: July 17, 2008, 11:13:40 PM »
Great work capacitor70

I have a question : did you tested this circuit without sensing coil and 1n4148 diode ? Are you able to test if that circuit works when car coil minus is not grounded all the time but only when closing path to ground by TIP transistor powered by some function generator or square generator.

What I mean is : maybe a closed path from LV side to the car coil secondary while 330uF cap is charging and before spark occur has something to do. If you could isolate minus of car coil from ground and let it connect to ground ONLY when transistor fires it would be a wonderful information if plasma spark is generated in that situation.

I'm planning to replicate this experiment as soon as I collect all parts. How many turns have each of coil on torroidal transformer ?

capacitor70

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Re: S1r PDF coil description and discussion !!!!
« Reply #144 on: July 18, 2008, 04:22:25 AM »
My engine is in open state for replacement of oil seals and piston rings, trials on engine are not taken yet.
It is much better than diodes, on table setup it gives much much better result than diode.

Park34

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Re: S1r PDF coil description and discussion !!!!
« Reply #145 on: July 18, 2008, 04:32:40 AM »
the two spark plugs in the circuit, what do they do?? for teh circuit

vrand

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Re: S1r PDF coil description and discussion !!!!
« Reply #146 on: July 18, 2008, 07:14:43 AM »
My engine is in open state for replacement of oil seals and piston rings, trials on engine are not taken yet.
It is much better than diodes, on table setup it gives much much better result than diode.

Sorry to hear that your engine is in need of repair. I hope you have it up and running soon.

What size and type/mfg engine are you using? 

Why the need for the 600W lamp in the circuit before the bridge diode?  That lamp load looks like a large user of energy? 600W X 4 cylinder engine= 2400W?

Regards,
Michael Randall

whopper1967

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Re: S1r PDF coil description and discussion !!!!
« Reply #147 on: July 18, 2008, 07:42:10 AM »
@capacitor70,what size is your ferrite core?I assume it doesnt really matter?...thanks

AbbaRue

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Re: S1r PDF coil description and discussion !!!!
« Reply #148 on: July 18, 2008, 08:14:18 AM »
The 600W light is just a high wattage resistor you can get for cheap.
It's just limiting the current going into the capacitor so you don't trip the circuit breaker charging it.
A 600W limiting resistor means you can never draw more then 600 watts from the source.
Also acts as an indicator; if you have a short it will light up brightly, a resistor would just get hot. 
Just buy a couple of halogen bulb tubes. they sell 500 watt tubes at Canadian Tire.



lon92

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Re: S1r PDF coil description and discussion !!!!
« Reply #149 on: July 18, 2008, 10:15:10 AM »
In my opinion, the 600W lamp will waste the energy by producing waste heat......  ???

Why not try to replace the lamp by using a ac capacitor.......  ;D 35uF 300V Capacitor

I think this will make the circuit more efficient....  :D