Laptop AC Adapter for notebook computer
I ordered a new laptop ac adapter that is compatible with my Toshiba laptop and used it tonight. It got very hot! The voltage specs are the same though. The reason I got a new one was because my kids stepped on the plug end and messed it up.
So I decided why not cut the plug off the new one and solder it to the old one that does not get this hot. When I cut the old plug off it has wires on the ourside under the cover and then wires inside another one in the middle kind of like coax cable. So can just solder these together right? And tape it up good with electrical tape.
As long as the polarity is the same, the cables should be the same. And they should all be made like you see. The outer cable is ground and the inner is either positive or negative. The exceptions are the odd laptops that use ac current and the dc regulator is built in. I have a power supply around here somewhere that puts out 24v ac. As for my other 3 laptop supplies, one puts out 18 volts, one 20.5, and one 15. As for the temp, that is a side effect of ineffeciency in design. You get what you pay for. If the problem with the old one was the end, you could have bought one of those by itself from an electronics outlet for around $5.
Most laptops use the same voltage. But the current they need is different. So if you order an adapter you have to check the current rating of the old one too. As the voltage and the current capebility is important. Soldering some wires together is a bit dangerous. Take a uni-meter and check where the wires are connected to, as from the old one and the new one. Before connecting to your laptop check with a uni-meter the voltage and the polarity.