On Wed, 2008-05-21 at 13:30 -0600, Cedric Chang wrote: > Sorry if this has been asked. Are these alternators more effective > than an automobile alternator ? > cc I was wondering the same thing. The typical automotive alternator pumps out around 50amps at 12V, pretty close to the 500W mentioned. Heavier models can pump out 100amps or more. Obviously they are not optimized for size/weight, and they also drop off in output quite a bit at lower speeds. TTYL -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist