1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Covert to Watts, Input and Output Values provided, Covert it to Watts

  1. Mar 21, 2012 #1
    I have this Sony Laptop, the adapter has the following specifications:

    These are the input and output values of laptop charger.

    19.5V written in bold on top
    Input:100-240V~1.3A 50-60Hz
    Output: 19.5V---4.7A, the dotted line also has straight line above it, I dont know whats that symbol called, can someone help me in calculating how much watts it is?
     
  2. jcsd
  3. Mar 21, 2012 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    welcome to pf!

    hi raokhan! welcome to pf! :smile:
    ~ (as you know) means AC, and that no-overtaking double-line means DC :wink:

    for DC, power (in watts) = volts times amps (W = VA),

    so in this case the output power is 19.5*4.7 W :smile:

    (but i don't know how much extra power is consumed by the charger itself :confused: … chargers can get rather warm!)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Covert to Watts, Input and Output Values provided, Covert it to Watts
  1. Watts to ohms (Replies: 2)

  2. Output rating (watts) (Replies: 6)

  3. KWH to Watts (Replies: 1)

Loading...