Can I use a different voltage / amp to what the device is rated?
423
Choosing power supply, how to get the voltage and current ratings?
132607
Can computer power supplies use North American 240V (hot-hot-ground)?
142123
Changing the frequency of an AC supply
77248
How to scale and shift voltage signal?
113480
Using voltage divider in a circuit
18771
Switch between 5V power supplies?
128703
Can I take a 220 line and convert it to a regular house outlet what would be the damage?
12448
How is it possible that if I combine 100 Ohm resistors in different ways, I get _LESS_ resistance than original?
142418
Can you split power between two voltage regulators?
121934
In a USB cable, is it OK to swap the D+ and D- wires?
32052
how to reduce DC voltage using resistors?
75709
What is the usage of the negative voltages on a PC motherboard?
10700
How to get more than 100mA from a USB port
14196
Is it safe to implement a split power supply from two identical AC/DC adapters?
4007
Why is a laptop power supply output voltage different from its battery?
91437
Amplifying 10-30mV into at least 5V
7362
Laptop power supplies, does current matter?