Ignition and charging systems

[gr8full]

Im a student at MMI in orlando Fl. and the teacher has asked us this question. Please let me know. thanks

[Bryanj]

Thats 92 and we only talk about up to 78 models so i doubt anybody can help.

[SteveD CB500K0]

I tried Googling it but no joy. So "don't know" I'm afraid.

[Yoshi823]

All CDI systems that I have ever come across have been DC supplied,as from the regulated 12v.

An EMS system is one that has an EMF or electro-motive force induced into the alternator windings.This has no touching parts but is quite bulky.
The PMS system is one that utilises brushes as a connection to the commutator.This is less bulky but requires more in the way of maintenance.