Showing posts with label Emergency Phone Charger. Show all posts
Showing posts with label Emergency Phone Charger. Show all posts

Thursday, May 10, 2018

Emergency Phone Charger From 3 x AA Battery with output Protection


Three AA batteries (3 x 1.5V) is using as emergency power source for mobile device or phone charging. Output current is limited to 0.5A and protected from out short circuit or high current drawn from the batteries.

Ultra-Precise, Current-Sense Amplifier

   This ultra-precise current sense amplifier that can measure voltage drops across shunt resistor, R1 over a wide common mode range from 2....