Universal Power Adaptor For Laptop - Printable Version -Shoutbox (https://shoutbox.menthix.net) +-- Forum: MsgHelp Archive (/forumdisplay.php?fid=58) +--- Forum: Skype & Technology (/forumdisplay.php?fid=9) +---- Forum: Tech Talk (/forumdisplay.php?fid=17) +----- Thread: Universal Power Adaptor For Laptop (/showthread.php?tid=83459) Universal Power Adaptor For Laptop by bio_hazard13 on 04-30-2008 at 12:14 PM
I've been given a targus 90W Ac power adaptor to use for my laptop and i'm not sure if it will work with it. I've looked at the back of the box and its got a whole pile of laptops that is compatible with, but mine isn't on there, but it is a newer laptop. Now the specifications of this targus one are in the output 19V 4.74A while my dell adaptor says 19.5V 4.62A. Would I still be able to use it on my laptop or would it stuff up the battery or something? RE: Universal Power Adaptor For Laptop by saralk on 04-30-2008 at 12:19 PM
I sell laptop power supplies at work all the time. RE: Universal Power Adaptor For Laptop by RaceProUK on 04-30-2008 at 09:02 PM Surely a difference of 0.5V won't cause any issues? RE: Universal Power Adaptor For Laptop by andrewdodd13 on 04-30-2008 at 09:52 PM
I wouldn't risk it, tbh. Your processor core generally runs at 1.5-2.0V - so in there, that's a 25 to 33% increase. RE: RE: Universal Power Adaptor For Laptop by djdannyp on 05-01-2008 at 12:07 AM
quote: well, they do i accidentally plugged my laptop's power supply into my external hard-drive and completely fried it i wouldn't risk it at all......if you don't have the correct power supply for your laptop then i suggest you don't use it until you can find the exact one......it's just not worth taking a chance on RE: Universal Power Adaptor For Laptop by RaceProUK on 05-01-2008 at 03:57 PM
quote:Generally, the CPU core voltage is regulated by the CPU's mounting and the discrete components needed to run it. The voltage of the external PSU therefore only needs to be enough to power all that circuitry. I don't know about laptops, but desktop PCs usually have 3.3V, 5V and 12V rails. Whether the PSU accepts a 19V or 19.5V input doesn't make a huge amount of difference. In the bio_hazard13's case, the voltage he needs to check is that of the battery. Really, it should be able to handle an exra 0.5V without issue. RE: Universal Power Adaptor For Laptop by saralk on 05-01-2008 at 04:22 PM
quote: IIRC, laptops don't regulate the power supply, since the block converts an AC current into a DC current, all the regulation is done there. RE: Universal Power Adaptor For Laptop by Apatik on 05-01-2008 at 09:30 PM An adapter does not supply multiple voltages, and doesn't regulate CPU voltage either (and a CPU does not run on 19V). RE: Universal Power Adaptor For Laptop by CookieRevised on 05-02-2008 at 05:00 AM
And 0.5V DC is a huge difference. Don't use a power adapter of 19V when you need 19.5V. As said before, voltage needs to be exact. |