OK Honda no longer makes the original ignition coil that steps up the voltage by 3 -4 orders of magnitude.
What's the easiest way to get a 40,000 volt spark out of a 12 volt ac system with a 100X step up coil?
Bret Cahill
Step Up Pre Coil/Transformer
May 19, 2012
3 Replies
the ignition coil doesn't need a 3000:1 ratio to step the voltage up. the ignition system is a flyback circuit.
If the coil is a transformer use the energy transfer circuit, this works by benerating a voltage spike in the magneto by interrupting the magneto current and putting the resulting voltage spike across the transformer primary.
If it's a coupled inductor use the energy storage circuit which generates the voltage in the ignition coil by interrupting the coil's primary current.
?? 100%
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- Apply 12 volts to the primary for some milliseconds, then interrupt it. A mechanical contact (aka "points") or a switch or relay contacts. Or a mosfet.
- Use a dc/dc converter to charge a capacitor to a couple hundred volts and discharge that into the primary. All the stuff you need is inside a disposable flash camera.
When I was a kid I used to dump a charged oil cap into a car coil through a thyratron tube. It was hard to insulate the output... it would punch an arc through practically anything. The only usable output connector was a plastic tube filled with motor oil.
John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com
Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
Didn't your mother ever tell you you would arc your eye out with that?
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