I'm have looked around and can find individual schematics for making a fixed switching regulator 12v to 3.3v or 12v to 5v.. or an adjustable switching regulator that I can use to make a 12v to 9v convertor, but I can't find a schematic for a simple circuit that will take 12v from a battery and convert it to 3.3v, 5v and 9v. Anyone done this already?
I have found a 12v to 3.3v and 5v convertor, premade. It has two seperate regulators, but they share an inductor and other componants, making a cleaner unit. If this unit also supplied 9v, it would be perfect.
I am looking for either a schematic or affordable premade unit. I would like switching and not linear, and I would like to output 3.3v, 5v & 9v DC from one 12v DC input
You are about 98% to where you need to go on this one.
Hit the Ebay again and look for the same thing, “buck regulator” or “switching regulator” --whatever you searched to get you to this current model. From there, you are looking for basically the same thing, but look for one that is A) adjustable and B) has a LED display. Some of the fancy ones (“fancy”=$7 instead of $5) have 7-segment LED displays on them to show the output voltage. Sure, you would have to adjust the little pot for different voltages, but hey, we’re talking about 4 or 5 bucks here. (HA! “bucks”!!)
I was hoping to find a unit that had multiple outputs, like the one I linked. It outputs both 3.3v and 5v, but I suppose I can just mount a few of them together and mount that. Thank you.
