I got a monitor without cable from a friend. He needs 40W (19v / 2,1a). Such cables I find as a laptop cable. Can I buy one and use it as a power supply?
If the plug fits, the voltage and minimum amperes I would not know what would speak against it:-)
That's fine.
If the plug suits everyone, if not, the plug must be made to fit, but that usually goes as well.
It is important that the voltage is correct and that the power supply supplies at least as much current. As the screen needs.
the laptop power supply say 3.5 amps, that's not a problem. The screen takes only as much as he needs…
traofhäuschen so the "power supply" to your home depends, for example Has depending on how big between 400 and 1000 ampere… From the dessert lamp (0.1 A to the runner heater (32 A) burns nothing through you, because the tension is right.
