Can anyone explain stator/trigger?

[AtlDawg]

So I need a little electrical lesson as I understand automotive ignition systems but not so much boats and maybe others could benefit from it as well. AS I see it, you have a stator which generates a voltage somewhere around 200 - 300 volts at rpm. Also, a trigger or timer base which also generates a voltage. Does this trigger voltage actually charge the CDI capacitor or does it only provide a "timed" voltage to the diode to discharge the coil to the spark plug? Is the stator voltage only for charging the battery or is it involved in the ignition process? For reference I have a 1973 Chrysler 707HF that has a stator, CDI unit, coil and a distributor. Seems a little redundant to me. I think that understanding how the whole thing works will help with troubleshooting. I have a factory service manual on my motor and it gives great procedures to test all of these components but not much on what each component does...

 

[The Marine Doctor]

Re: Can anyone explain stator/trigger?

The stator creates the initial voltage and is from there sent to the powerpack where it is stepped up or down depending on the ignition system. <br /><br />The trigger sends a timed voltage to the powerpack. This triggers a switch. Once the switch is tripped "turned on" the voltage that is stored in the powerpack that originated in the stator is sent to the coils.<br /><br />In the case of the older Chrylser product.<br /><br />The ignition runs of the battery. When the key is in the on Position 12.6 volts is sent to the powerpack. Stepped up and is sent to the coil and stepped up in voltage. The distributor creates a timed ground with the rotor and points or a preamp. At this point the voltage is sent to the distributor and then to the sparkplug.<br /><br />Simple yet effective.<br /><br />TMD