I want to attempt to hack a set of wireless headphones to accept direct DC voltage from a USB cable. Currently the headphones accept 3 volts from two AAA batteries. I'm looking to build a small cuircut board to regulate 5v to 3v @ around 500ma (i think, need to measure first). I have no idea where to start when engineering this type of circuit, but i have the basic idea and skills to build it myself.
Any pointers to tips on where to start would be awesome. I'm basically just asking for a diagram that I can build from.
Any pointers to tips on where to start would be awesome. I'm basically just asking for a diagram that I can build from.