Thursday, May 10, 2018

Emergency Phone Charger From 3 x AA Battery with output Protection

Emergency Phone charger circuit utilizing AA batteries with protection

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

Power Calculation from Current and Resistance

Power Equation for Current and Resistance P = I² R Current (I) in Amps Res...