I don't know of one but where you have a coil and battery ignition system it isn't any different from a car primary or secondary wasted spark. However very small engines like 2 stroke, mopeds mopeds, outboard motors, have a flywheels magneto and the ignition primary and secondary traces look very different because the spark is ac.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
