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Zvs driven ignition coil.

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StormInABottle

Mon Mar 04 2013, 07:24PM

Registered Member #9252 Joined: Fri Jan 04 2013, 06:27AM
Location: Andromeda
Posts: 253

Zvs. Plus a core of a old flyback. To wind 5 + 5 then wind 10 not 20 ( more power tho)
And into a goddamn ignition coil. At 50-60 volts.

What would the result be? i know ignition coils can withstand high wattages. ( my mom's car battery is some 1200 watt monster. )
If anyone can answer. or try that. Even at 24 or 36 volts. Tho what i will do is 50-60. And thier filled with oil from the inside right?

paris

Mon Mar 04 2013, 08:00PM

Registered Member #3042 Joined: Wed Jul 28 2010, 12:36AM
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Posts: 121

some are oil filled ,if you can hear sloshing inside. some are filled with tar of some sort.
theres a screw for filling it.

Platinum

Mon Mar 04 2013, 08:52PM

Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525

Ignition coils can't handle massive powers, and the battery at 1200watts is wrong they are not rated in watts. Even if it was 1200watts all that power isn't just for the ignition coil.

And also the ZVS isn't the best circuit to power an ignition coil as you have to lower it's frequency drastically.

paris

Tue Mar 05 2013, 01:53AM

Registered Member #3042 Joined: Wed Jul 28 2010, 12:36AM
Location:
Posts: 121

he wants to use a ferrite core not the original laminate ,least thats the way I read it.....

the structure of the sec = the core has direct contact with the coil wire on the inside layer and the end sticks out the top connected to the pri neg.
The core is connected to the HV point

Ash Small

Tue Mar 05 2013, 02:33AM

Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245

paris wrote ...

he wants to use a ferrite core not the original laminate ,least thats the way I read it.....

the structure of the sec = the core has direct contact with the coil wire on the inside layer and the end sticks out the top connected to the pri neg.
The core is connected to the HV point

That's not the way I read it.

The Mazilli ZVS circuit drives a 5+5 turn primary on a flyback core. The secondary on the flyback core (~20 turns) drives the 'iggy'.

The 'iggy' is designed to run in flyback mode. He's going to run it in 'push-pull' mode.

paris

Tue Mar 05 2013, 06:25AM

Registered Member #3042 Joined: Wed Jul 28 2010, 12:36AM
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Posts: 121

whoooa stop the bus! ^^ I see what yee sayin . the out put of FBT is AC but wont that be big time reactance ? the iggy sec is about 20H

Ive pulled apart harley coils ,model T and car coils for the hell of it and I just thought they were useless with the laminates I need a rethink me thinks

Ive got a gallaugher electric fence coil too, like a dick I thru away the rest of it ,board etc

new concept for me is the 5+5 and 20 turns bit ....

Ash Small

Tue Mar 05 2013, 11:46AM

Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245

paris wrote ...

Ive pulled apart harley coils ,model T and car coils for the hell of it and I just thought they were useless with the laminates I need a rethink me thinks

Iggy's are designed to run at a maximum frequency. The 'dwell angle' figure used when setting up points (anyone remember points ignition?) is related to this (they need a certain time to 'relax' before firing again).

Jaguar had to have special coils developed for their V12 engine to cope with this.

The core on some HEI coils can be removed, with quite spectacular results

Platinum

Tue Mar 05 2013, 01:50PM

Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525

Arcingnoob try to get the frequency as low as possible by using a a very big capacitor on the ZVS, the bigger the cap they slower the frequency. And also you don't have to use a flyback core you can use the ZVS directly, I'm not sure how it works but you get 3 outputs on the ZVS 2 - 1 + twist the 2 - together and add another inductor to them and I think then you don't need a centre-tap then.

Also if you are using any voltage over say 36v they please use a separate power supply to drive the gates, then you don't have to worry about the zener diodes giving in, and you don't need them.

Platinum

Tue Mar 05 2013, 01:50PM

Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525

Sorry for this double post the server was not responding and I clicked post again.

StormInABottle

Tue Mar 05 2013, 03:00PM

Registered Member #9252 Joined: Fri Jan 04 2013, 06:27AM
Location: Andromeda
Posts: 253

Platinum A 12 volt battery that can supply 100 amps is a 1200 watt battery. And a ignition coil can well stand high powers.

Also to lower a zvs frequency. Just. Add more capacitance. Easy.

Ashsmall. What do you mean with iggy? ignition coil? And is it really designed for flyback mode o.o? What happens if i run it with push pull? it will still work right?
So the ignition coil i have to buy must be a High energy ignition coil. Also i do care about the current. When running it in tesla coil mode. I get almost no current.
Am thinking of a transformer i can buy and that will not burn out like flybacks do. that i can run with a zvs. And i decided i am staying away from homemade options for the current time The next thing that popped in my mind was a ignition coil. Can anyone test the ability of running a coil at high powers in the way that guy did. I 'd do it myself. But i have exams. And i have no ignition coil yet.

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