My s1r9a9m9 replication!

[xbox hacker]

I AM GOING TO START A NEW THREAD...."My Cap70 replication!" 

I got fantastic plasma reaction for the Cap70's latest design!! Below is yet another crappy video form my cell phone...i know, i know....i need a real video recorder!!! LOL

This design cant be any easier!! Setup just like he said, disregard my post on my redraw, that was the only way i could get it to work for me.... but i finally got a series cap bank 6000v @ 500pF and BAM that did the trick!!


http://www.youtube.com/watch?v=z8ThI0y8Vp8

Now the next problem is that if you watch the coil you can see the inter windings arcing on the secondaries  I origanlly unwound a tolaroid coil to make it less turn for the secondary, so i think thats why it is arcing so bad...but it still works 


@hartiberlin : I have tired primary turns form 2 - 6 (cant fit any more in it after 6) Same results for all, no secondary firing, but i didn't try the 1uF cap idea, got to find one first!

[xbox hacker]

Ok...after hours of playing with the coil setup the secondary now has too much arcing to get the plug to fire. So i will have to rewind the ring with insulated wire for the secondaries!!

Just for shits and giggles, i hooked up my monster air core transformer... its just like the one on www.myelectricengine.com    It was ok...but Cap70's was MUCH better!!!

[capacitor70]

Now the next problem is that if you watch the coil you can see the inter windings arcing on the secondaries  Undecided I origanlly unwound a tolaroid coil to make it less turn for the secondary, so i think thats why it is arcing so bad...but it still works  Grin

Voltage gets divided on each turn of winding, If we have 10KV and 10 turns then each round of coil have 1KV, copper magnet wire insulation breakdown occurs at around 700V, due to this you can see the inter turn windings arching.

@Stefan
Coil is simple high voltage transformer, nothing special, It is not possible to get arc without HV on primary. You need same turns as HV coil have to get it work with 12V...

Capacitor on primary side are charged to high voltage and discharge through primary once plasma channel is on (Plasma acts as high voltage switch), on the HV side spark plug. See surge tester or LC resonance.

[Super God]

Great news!  I got a new 6 cylinder engine and I should be getting a job soon so I can buy the parts to do the conversion.  Yay!  Then I can finally finish this topic.

[Shanti]

Woah. A lot of posts since my last look 

@Shanti
Addition of diode at HV side created problem of misfire, direction of diode is confirmed.....

Strange...Maybe diode is not switching fast enough? Well if it works without, why bother...

I built a toridal coil just like yours and got my setup all hooked up, with out the LV...JUST HV. I am using a

.089uf 2100v cap form a microwave. I get no spark at all on the spark gap on the primary side....witch i would

guess is why i get no spark on the secondary side...lol

How many capacitors you are using in series, or single ?? you need at least 6KV to get it work, three

capacitors in series
capacitance is high it may create problem (Not sure)

Well this was exactly the reason why I said you to insert the HV Diode. For I thought that maybe the misfirings in your first vid were, because your coil doesn't have enough energy to charge the caps in one shot. And then the diode would be quite an improvement, for the coil wouldn't be able to discharge it again. But it seems, your coil has enough energy to charge the caps in one shot, then the diode isn't needed anyway. But if you take a 89nF cap, I would guess this is too much capacity for the coil to charge in one shot. then you will exactly get this problem...

But I still would suggest to take one HV doorknop cap, instead of these 3 in series, especially if they do not have the same capacity. For it is really very likely that one of your caps gets much more voltage than the others!
And you can easily get doorknop caps on EBAY for >10kv for $5-10 in this small pF range you need.

Why the toroid core performs better than the air core? Well actually it shouldn't...
Maybe the HV transform works better, but the LV side will surely have a much higher inductance, and therefore gets hindered to let a lot of amps to flow...But as you use an electrolyte cap in your LV anyway, I think it would be the best thing you can do.

@Harti:
What exactly is your intention how you wanna improve this circuit. Your drawing one schema after the other (you're really enthusiastic. Chapeau). But what exactly would you like to improve in the circuit, for it is really a very easy cicuit. And as I told earlier, we want to have as less inductance in the secondary as possible, so you surely don't want to transform from LV to HV with the isolating transformer. I think your actually complexing the schema more and more...(with your HV Fets, etc.)

Offtopic: As I will have to do some other things, I will not post anymore until my GTO caps arrived...