Wanna power this laptop since I fried my system today.
The laptop requires 15v, and I've got a car PSU that gives out 20v and another car PSU that gives out 5v. I got thinking, the potential difference between the two PSU's positive wires is 15v. Would this be ok to power the laptop?
I`m thinking of trying it tomorrow, but somehow I get the feeling it's gonna cause ground loops and all sorts of havoc, so it might not be worth bothering.
I'm gonna get a proper 15v PSU eventually, it's just that the E-bay auction doesn`t end for a couple of days, :) and I`m stuck with silence in my car since I fried my computer this morning. :(
Here's how it happended:
I powered up my computer today, except it didn`t fully power up. The power LED came on, thats about it. So I tried it in the house, and measured the voltage coming outta my sproggy.... All was good until I found the 5v rail was actually giving out 8v! So, I unhooked the sproggy, and tried a mains PSU on the computer and it did the same thing.... sat there with just the stupid *** power LED on, and nothing else. :( I reackon the sproggy fried the motherboard.
I tried powering up the sproggy with nothing attached, and it gave out 12v on the 5v rail. :confused: So, just for the sake of curiousity, I tried wiring it up to a crappy old quad speed CDROM drive. It appeared to work. Even tho the 5v rail was now giving out 10v. I pressed eject, and the tray shot out faster than i've ever seen in my life. It almost took my hand off. :)
I gave up after this, thought "sod it", and got straight to work on the laptop. Btw, If anyone has had a similar thing happen to thier sproggy? I'wanna try and fix it for mark 4 (see sig).