I bought a car adapter for my laptop that is rated at 75 watts, I read that most laptops require 65 watts, but I can not find that information on my laptop any where. Do I need a bigger one?
2007-03-18 09:37:58 · 3 answers · asked by Nancy P 1 in Computers & Internet ➔ Hardware ➔ Laptops & Notebooks
Usually, it will say on the adapter itself.
If it doesn't, you can use a simple electronics law called "Ohm's law" to figure it out.
Here is an online calculator for it: http://ourworld.compuserve.com/homepages/Bill_Bowden/ohmslaw.htm
Just enter the output voltage and amperage listed on the adapter into the matching fields, and it will give you the wattage.
2007-03-18 09:58:03 · answer #1 · answered by Bjorn 7 · 0⤊ 0⤋
look at your your current power supply
you should see the the wattage rating on it
If it is 65 watts your fine. a 75 watt power supply will not hurt it.
2007-03-18 09:45:32 · answer #2 · answered by beni_gabor 3 · 0⤊ 0⤋
Just try it and see.
2007-03-18 09:41:23 · answer #3 · answered by bobweb 7 · 0⤊ 0⤋