Power Supply 4.2VDC broken. Freedom of choosing new one
423
Choosing power supply, how to get the voltage and current ratings?
120827
Purchasing a Switch - AC vs DC Current Specifications?
33761
Is unplugging the power from a PC in standby or in normal mode bad for it?
91831
Using series of LM 78XX for power supply
12515
Class II isolated power supply (wall wart) -- referencing the output to mains neutral?
37729
What's a simpler way to switch between power sources?
106741
Find the power supply hardware information for a PC using Ubuntu's command-line
72609
Testing a UPS by unplugging it from the wall
36224
Grounded AC-DC power supply, what connects to earth ground?
71029
How do I select a non-OEM charger for my device?
142418
Can you split power between two voltage regulators?
80781
Can a 20V 4.51A power supply be used with a computer that requires a 19V 3.42A power supply?
23850
Phantom Voltage on Hot Wire from Another Circuit
14016
Least expensive way to boost DC voltage
44045
Why do some AC adapters and power supplies generate a whining noise, and what can I do about it?
4007
Why is a laptop power supply output voltage different from its battery?
137995
Powering a circuit from either USB or LIPO