OK, this is not an Arduino problem, but it IS my Arduino project and I am running out of patience looking for a solution. (I’ve been searching for several weeks) I hope someone here has some power supply design knowledge I can tap…
I’ve got a 3-phase alternator that puts out 12-125 VDC after rectification. I need to control that as efficiently as possible and convert it to around 15-25 VDC @ maybe 3 Amps where it can be better managed for driving high-power LEDs, charging a LiIon battery pack and running my Arduino.
I’ve been looking at a myriad of switching power supplies, but they all have a relatively narrow range of input. I can either find ones that handle 12-36 VDC input or ones that handle 90-260 VAC input. But I need a very wide range of around 12-125VDC input. The top end is the most important because I don’t want to fry the input while I’m riding my bike at night at 40 MPH. That could be disastrous. :o
It’s no problem rolling my own power supply circuits or just buying something that works. But I can’t find enough info to do either. If anyone has information on ‘wide range input voltage’ switching power supplies, I would be utterly grateful! I would love to get advice, schematics, and/or supplier information. :-/