Can I use a 5V 1A usb adapter to power a 5V 500mA lamp?
423
Choosing power supply, how to get the voltage and current ratings?
127054
Power supply for toothbrush motor
88265
Cann I use a 19.5V 4.62A laptop charger for 19V 4.74A laptop?
67432
Can connecting of AC adaptor first into device, then into mains pose a risk of voltage spike?
2782
Can I safely charge my laptop with a non-standard, third-party charger?
72043
Automatic switching between external 5V and USB bus power supplies
77631
Powering Arduino from a voltage divider
67448
Can I use a charger with more output amperage than the device needs?
147687
Practical way to generate 1500V?
42152
Adding DC voltages of PSU
100157
Running 2 5V USB battery power packs, Can I use them in parallel
44127
What are the ways to make a dual power supply from a single voltage source?
137995
Powering a circuit from either USB or LIPO
141867
How does a USB 2.0 Wall Charger negotiate current output?
14196
Is it safe to implement a split power supply from two identical AC/DC adapters?
59891
Power LED bed lamp from mains
49235
Does a power supply draw only as much power as it needs?