Running 3-4 red LEDs on 3xAAA batteries efficiently
Nov 15, 2021 · I have one of these generic Motion Sensor LED Night (example) and I modified it to stay on all night on a much dimmer light. It lasts about 150 hours the way it is now (I just …
overheat - Can I run a 2xAAA battery device on a 5 volt USB device ...
Nov 8, 2020 · Just wondering and I don't want to waste parts if it will just burn out if I have it plugged in too long.
Battery life: 2xAA or 4xAAA - which is better?
Aug 15, 2015 · Which will provide longer battery life: 2xAA batteries in series or 4xAAA batteries in series regulated to 3V via a voltage regulator or buck converter?
2xAAA battery => 3.3v/250mA step-up converter with logic-driven …
EDIT: The requirements in the question below appear to be practically unsolvable, but happily after a bit of digging I actually found an alternative equivalent RS232 device which runs off a …
voltage - Electrical Engineering Stack Exchange
Dec 12, 2021 · I have this table lamp that uses 3 AAA batteries to function, but the batteries run out pretty fast, so I'd like to swap them for a rechargeable battery that I can plug into a USB …