Re: How do Atom Computer Ignition modules work?

[legendre]

quote jnjvan:

The third post, where debe listed the patent for the device, is a pretty good answer. Patents are brutal to read and understand, but that particular one gives a very good description of the operation of the device.

JV

In short, the Atom modules draw their operating power from the output of the ignition coil primary winding (they borrow a little bit, not much, of what will eventually become the spark energy), and trigger (as in, fire the plug) based on a certain voltage threshold in the same waveform.

To be very simplistic, the module replaces the points. But whereas the points are commanded to open based on the position of the points cam, the module is commanded to ‘open’ based on a certain voltage – a voltage which is intermittent, but regular and repeating. Think of the shape of the rising & falling voltage waveform – sort of a hill and dale – as an "electronic cam" that triggers the module.