FUN WITH HIGH VOLTAGE

High voltage from ignition coils and flyback transformers.

The ignition coils, connected in antiparallel, are diven by a 8 uF capacitor (many smaller caps soldered in parallel) and a TRIAC-based dimmer. The output voltage is about 120 kV.

A 555/MOSFET circuit is used to drive a rectified flyback up to 60 kV.

High frequency about 20-25 MHz up to 30 kV from a homemade LC circuit (using a Leyden jar) and an air-core step-up transformer. Technically, it's not a classic Tesla coil, because the transformer is operating far above its resonant frequency. But it's good enough to produce nice 1-inch streamers, to turn light bulbs into plasma globes and to light up fluorescent lamps from a foot away.

Most parts in the circuits were rescued from garbage. :-)

Category:

Education

Tags:

• High Voltage
• Tesla Coil
• Ignition Coil
• Flyback
• Capacitors
• Geeks
• Nerds
• Sparks
• Leyden Jars

[erlendse]

You can't get some rubber boots for the coil?

It seems to do the trick, at least on lower voltages(10-20 KV) combined with solid copper cored sparkplug wire.

[laplandian2]

@erlendse

I don't think rubber boots would work, because I'm running the coils on very high voltages, 50-60kV each. But I later put about 20 layers of electric isolation tape, and it did the trick.

[yourTIV0]

Submerse the ignition coils in mineral oil, that will keep them from arcing unwantedly.

[laplandian2]

Thanks for advice, but oil is kinda messy. I was able to avoid the overarcing by about 20 layers of isolation tape.

[jasonacjac]

Hey, im pretty happy to find someone whose been able to get such high voltages and frequency. Been searching for weeks for something like that! You think you could pass me some schematics or instructions on how to build one like yours?

i especially like the "from garbage parts" thing, except that you used a buttload of tape lmao

[pruefziffer]

Very nice setup and experiments you did there ! :-)

Are you using the 8 µF (btw I like what they look like) caps as part of a resonance circuit with the primary coil?

[tonysie]

is that what we call a corona!? it's so fucking cool

[c1vt3gr4]

do you have the schematic or a plan on how to built 1.

[juniortore]

excellent for only 8uF