Bicycle Generator Dynamo Output Voltage Vs. RPM MPH KMH PM Motor Carl Alternator Dynamo Regulated 14.8V THIS DATA REPRESENTS GENERATOR VOLTAGE WITH A 4 FARAD CAPACITOR ON THE OUTPUT TERMINALS WHICH MAKES THE DATA LOOK VERY STABLE AND QUIET. IT IS NORMALLY VERY NOISY LIKE THIS DATA SHOWN HERE. 0-12V 0-24V DC Leeson 0-24V DC MNS-Power 0-90V DC 0-180V DC 0-110V DC 0-120V DC Dynamo Alternator