Re: 3 W Dynamo Power

Posted by: joerg046

Re: 3 W Dynamo Power - 03/05/15 10:46 AM

Originally Posted By: ConRAD
.. just wondering where and when the universal 3W standard power size, commonly used for bicycle generators, did it come from.

I know why.

There was an old german Law of the for traffic.
in this law, all bicycle components where rated at 15 km/h.

A 3W Bicycle Dynamo had to power the 2,4 w front bulb and the 0,6 W rear bulb (3W) at 15 km/h at full Power.

Today, with LED Equipment, it would be more interesting to know the mAmpere, that are delivered.
Because the Volt are depending on the Speed.