To be fair to Ollie, my 1978 Honda Express (NC50) had a tiny silicon(e) rectifier under the seat. This, I think, was to convert raw AC power from the mag-neeto into usable DC current.
In any moped that is not using a "wheel powered dynamo" for power, there is probably a stationary magnet and a moving magnet, with some kind of resistor in between the magnets to catch the power that 'flashes' betweeen the poles of the magnet.
I think-- I'm not saying I know for sure, and I hope others will explain it even more clearly than I.
What determines if the current will be AC or DC? I'm not sure. Alternating or Direct... Hmmmm. My guess is it's the type of resistor between the magnets.
Problems with the mag-neeto or the rectifier will cause you to 'pop' headlights. A DC headlight will 'pop' if too much AC sneaks through (like from a weak battery or bad rectifier...)
So, back to the question: Is a moped AC or DC? It seems to be both, the mag-neeto (or equivalent) generates AC power, which is turned into DC for some of your blinkers and such.
If I understand Ron's posts, he's saying that most Peds can run their lights etc. from the AC, which would make sense, because you wouldn't have to have a battery or a Silicone rectifier in between the engine and the lights
I always assumed my TOMOS was the same as the NC50, in that it ran DC from some kind of current inverter or rectifier. But, it doesn't have a battery like the NC50 did... (Hey, Ree--- Is a TOMOS AC or DC??)
If a moped DOES have electric start (actual electrical start from a battery...) then it seems like it would be more of a "scooter" in the way the electrical works.
As fun as it is making fun of Ollie, I think he did have some of the basic ideas correct.
I've always been interested in high voltage, and current and coils. I think having a few small batteries and using a coil to get a ton of volts from a small power source is a pretty nifty trick.
(IE Moped shock devices or stun guns) Tesla coils and super high frequency devices and rail-magnet guns... I want to build a :"Jacob's Ladder" (you know, the rising line of high voltage that crackles up two antennas in every 50's scifi movie...??
Did I mention my plan to hook up hidden air horns to my front doorbell? when someone rings, they'll jump a mile high. Too funny.