Safe to use 4.5v 300ma rated 'universal' ac/dc adapter with kids alarm clock that requires 5v 500ma?
423
Choosing power supply, how to get the voltage and current ratings?
91243
What are the highest DC and AC voltages or currents that can be considered as safe?
117095
USB-C Chargers: Is it safe to charge a phone with a laptop's power supply?
77276
What would happen if I choose a connector with current rating smaller than the actual current?
142221
What is the ideal way to handle data pins D+ and D- on a USB power adapter to be compatible with fast charging on devices?
91814
4-20mA output/transmitter?
24801
How can I duplicate Apple's tiny USB power adapter?
33777
home socket with DC voltage
68560
Is it safe to use a power supply with a different laptop?
66305
Getting rid of AC/DC adapters
125118
230V AC to 5V DC converter, lossless
137995
Powering a circuit from either USB or LIPO
65365
How does USB Power Delivery work with voltages above 5V without damaging 5V peripherals?
26877
How to measure supply currents ranging from 1μA to 10mA?
14016
Least expensive way to boost DC voltage
93077
Insufficient voltage to dryer receptacle; what next?
2268
Question regarding use of low voltage high current outputs