My impression is that most manufacturers have chargers on their small engines now. I just checked on the Honda
, Yamaha and Johnson websites, and they all have chargers on their engines down to 10 hp. The output is only 5-10 amps on this size engine.
is something that produces electricity from mechanical energy. Common usage of generator, back when the earth was hot, was if you had a generator on your car, it was a device with a commutator that put out DC. Commutator (electric - Wikipedia, the free encyclopedia
An alternator is a generator that produces AC electricity.
A rectifier is a device that converts AC to DC. It can be as simple as a single
diode. An alternator needs a rectifier in order to produce DC to charge a battery. They are typically built into alternators (The kind you find on cars and inboards).
A diode is a check valve, allows flow one way, but not another. Steve's idea with the Schottky diode allows the electricity to flow from the engine to the battery when the engine is running as the voltage of the engine is higher than the battery. When the engine is off, the voltage on the engine side is lower than the battery, and so no electricity from the battery reaches the light. I believe Steve is saying to use a shottky diode because they can have a low forward voltage drop. The small outboards that I'm familar with (say old) did not have a regulator
and so the voltage drop is not really a concern, but if the newer engines have a regulator
, then even the smaller drop across the shottky diode will affect how well the battery charges.
engine_______|>________+ battery -
Is this what you had in mind Steve?