connecting laptop power plug to carnetix
Hey guys, could use some help here. I decided to hack up the ac power cord to my dell 500m, and see if I can hook it up to the carnetix p1900.
As you can see in the pictures, it has three wires. Before I pulled them apart, the outer one (thickest-pointing up in the pic) surrounds the middle wire (pointing down) which surrounds the inner one (very thin-pointing to the right).
Anyone know whats the polarity of the wires? Or how I can find out? I'm hoping 1 is 19.5V and 2 are ground.