EE question...D-Jet related Options

[Mueller]

What I want to do is have 1 12vdc square wave input, with a "splitter" that will alternate between 2 outputs, I want to do this electronically, and not with a Hall type sensor going high or low to reset

[scotty914]

why not just put a pick up on the fly wheel to trigger the signal, making a circuit to transfer a hall or VR sensor to make or break a connection is easy. the hardest part is getting it to only do it on every other rotation . or you could use a pick up in the dizzy, that you add in. i would assume that the points are 180 out of rotation to each other. it could be as simple as 1 very small reflector glued to either side of the shaft or rotor with two small optical pick ups ( basicly avalible as one led looking thing ) either drilled in to the dizzy body or cap, this puts the pick ups 180 out of phase if the pick up are 180 apart.

a little harder ( but not much ) to do would be as some one said install a pick up on one spark plug wire to trigger a circuit to average the signal and trigger two transistors per spark or two pick up and just build 2 seperate triggers. and it could be done with 3 small wires to the spark plug wires. no large clamp like a timing gun needed, just a loop or loops on the plug wire

any of the above systems could be built as an add on board that the injector points wire just plugs in to. and it could be sold once worked out. i think price to make this board would be 20 to 30 bucks