Re: How do Atom Computer Ignition modules work?

[debe]

I have pictures of the CRO wave forms across the primary of an ign coil with no points, when cranked its definitely not a real sine wave. In the particular one tested its a very steep positive pulse & a very small negative pulse. When the module is triggered its a very sharp positive pulse. Using a mains sine wave through a transformer you are not replicating an ignition coil, this is why your transistor is running hot.