How would one design a circuit to swtich between external power source and a battery?
66593
LiPo Charging Ciruit - Switching Help
51977
Switching between 2 power supplies upon dropping below cutoff voltage efficiently
92681
Controlling Two Circuits with One Switch
120243
Can I safely use my camera with a external power supply?
18656
Why doesn't connecting a positive terminal of a battery to ground cause current?
84680
Will a battery short out when the terminals are directly connected together or will internal resistance save it?
21394
Laptop battery charge management
44127
What are the ways to make a dual power supply from a single voltage source?
52148
Interchanging battery with a higher capacity battery
147687
Practical way to generate 1500V?
99851
Can I estimate remaining battery life by measuring its voltage with the same MCU that it powers?
114791
How do you compute the DC operating point (IC,VCE) and draw an AC equivalent circuit?
156077
how to switch to backup battery when power fail?
156300
USB data transfer with a separate power source
109693
Basic circuit to keep LED either on or off depending on night/day
76472
Including +/- signs to battery in Circuitikz
144550
Different and opposing voltage sources?