I have a set of foot warmers for my shoe that require 2 AA batteries to run. I am using nimh batteries so plan to install a 3 cell holder in place of the 2 cell holder it comes with. This will increase the voltage and possibly damage the warmers, but if it doesn't it will likely make my feet to hot anyhow. The 2.4v of the nimh's doesn't power them as well as I'd like and even with 2400mah batteries they go dead after an hour.
So my question is what is the best way to regulate the voltage down to 3 volts, hopefully with something small because the battery pack and whatever I need to do this will be clipped to the top of my sock.
I can provide a link to the wamers if anybody wants to see what they are or the specs, but won't post it initially due to being thought of as spam.
Thanks!
*edit* after searching google it looks like one of the little black regulators is what I'm after. Seems a bit difficult to find specific for 3v though. Also seeing that I should have an input voltage of at least a couple or more volts above what I'm looking to reduce it down to. So food for thought for me I guess. Do these little regulators also act as a low voltage shutoff then as well? If that were the case I would maybe be interested in using a lipo battery instead of nimh's.