Originally Posted by
roashru
heat sinks are a major factor, but anything pass 5 volts damages solid state electronic components (parts). amps can be controlled with a heat sink. volts is what burns them up.
What you have posted here is incorrect. There are many solid state devices that can take much higher voltages than 5 volts. If an led can take the max current generated by a current source, it doesn't really need regulation. Many currently available power leds can withstand over 1A, they are not going to burn out using a dynohub that puts out less than half of that. The forward voltage drop of the led is going to determine the voltage coming out of the dynohub to a great degree.