Originally Posted by
KC8QVO
Looks like the dynamo type lights take 6v AC. Does anyone know if they can take DC? Some appear to have a capacitor for continued lighting when stopped for a period of time. That seems to imply that they would at some point rectify the AC and charge the cap with DC, which would in turn power the light off the same DC?
All LEDs can only run on direct current, the commercial light rectifies the dynamo hub's AC output for the LED. So if you want to put direct current into the light, it'll still come out of the rectifier as direct current.