AC Adapters: Do watts have to match? / Is 19v close enough to 20?
423
Choosing power supply, how to get the voltage and current ratings?
64645
Is it possible (and safe/reliable/non-damaging) to use a 20-pin ATX PSU with a 24-pin ATX motherboard?
43026
Is it safe to use a "Universal Laptop Adapter"?
116874
Connecting two power supplies with almost like voltages to an amplifier in parallel
88894
Why does a 12V 2A adapter measure only 0.358A on a multimeter?
91508
Voltage at soldering iron tip, should I be worried?
113869
What should the minimum voltage rating of replacement power resistors be?
26877
How to measure supply currents ranging from 1μA to 10mA?
91814
4-20mA output/transmitter?
158957
Is a current transformer appropriate for a voltage step up flyback converter?
87422
Powering 12V device from 5/9/12V powerbank
123978
Why is this power adapter transformerless?
93077
Insufficient voltage to dryer receptacle; what next?
39362
What to do if MacBook Pro 2017 uses more wattage than the charger can give?
77276
What would happen if I choose a connector with current rating smaller than the actual current?
145553
4-20mA to 0-3V3 Converter
28526
Power, Voltage, Current Supplies