Switching between 2 power supplies without outage
137407
Switch between two power supplies
70745
Connecting two DC wallwarts in series - to produce dual DC supply
79787
Can I connect a PC to a PoE switch?
58516
Limiting the short circuit current of a power supply
72609
Testing a UPS by unplugging it from the wall
108482
Switch power supply/battery
67534
What is / how can I get a student-safe power supply for electronics projects?
4854
Using multiple power supplies in one PC
84467
How can I rewire half switched receptacles?
107150
How to prevent DC motor from dropping voltage of supply when switching on
149436
How to restrict/cut power output to a USB client?
125286
How do I change an AC outlet into a switched outlet using wireless technology?
76415
Sharing my 240V 30amp between two dryers
23833
Can I use a power adapter with more current but lower voltage on another laptop?
32938
how to hard-bypass the input of a line driver with a switch?
101440
How should I rewire a miswired 3-way switch?
6152
Automatically switching from 9V battery to DC wall adapter on insertion