Coil output is determined by the mass of the iron core being converted into a magnetic field. Creating
this magnetic field takes time, called the current ramp. Once the iron core is saturated, increasing the current
flow does not add to that stored magnetic energy. More current only speeds up the time it takes to come to full
saturation. Once all the north poles and south poles are in line, the coil is fully saturated and the collapsing
magnetic field is independent of engine speed or load.