what exactly is U3 on ur schematic there?
My reasoning for continuing the pulses is that One-press starting is not entirely reliable, because of the lower battery voltages present during and about 5 seconds after cranking. This is why I have it pulse every 4 seconds, IF THE COMPUTER ISN'T on yet. I will be building the same thing for my monitor (which doesn't have an always on feature).
thanks for the clarification.