Extending monitor power supply DC cable
I have 3 LG monitors mounted on my desk.
Two of those are barely reachable by the DC power cable: it is only 1.2m long and I need at least 50cm more for it to fit in my cable management system. So at the moment those power blocks are just dangling from the desk.
Extending the AC cable part of the adapter is not an option: the actual block has to stay under the desk.
I can't find a suitable replacement adapter for my 2 screens, so I thought about extending the DC cable by +/- 50cm.
I've seen some posts here and there about the voltage dropoff when extending a DC cable, but those posts were mainly about extending the cables by a few meters, not 50cm.
I'm also worried about any noise it might generate in the signal.
So is there anything I should keep in mind when doing this?
And about the actual extending itself: if it can be done, do I need to solder the cables or can I use something like a screw-terminal block?
3 Answers
The best way to do it is to solder the wires together and then put shrink tubing around them as shown in this video
But it is probably sufficient to just twist the wires together without soldering as this video demonstrates
But try not to use extremely thin wire.
1You can buy DC cable extenders, or could just buy a longer AC cable for the AC end of the power brick and attach the brick to something solid (like the monitor bracket?) , so that it doesn't dangle.
couldnt you just make the thinner cable longer using 12 volt power extension cord? Here is a link of one on amazon. i am looking to do this too, so if anyone advises against it, please let me know.12 volt power extension cord - male to female
