Toshiba power needs

Discussion in 'General Electronics Chat' started by aac9876, May 10, 2011.

  1. aac9876

    Thread Starter Active Member

    Dec 9, 2006
    124
    0
    I got this cheap square wave cigarette adaptor at Walmart and then read lousy reviews about it tripping when people powered up their Laptops. It was ok for
    charging but not running. It is a Cyber Power 2 in 1 inverter.
    But my Toshiba only uses 90 watts and the unit is for 140 watts cont.
    Could it be so off that it wont even run 90 watts???
    Or do you think some laptops use a lot more than mine..??
    and I know I can return it like 50% of what I buy at that crap box store..
     
  2. #12

    Expert

    Nov 30, 2010
    16,248
    6,744
    I got a similar POS for $8 and found that it makes a square wave of a lot less than the peak voltage of a housepower sine wave. Not even a stepped square wave! I can't imagine this thing providing proper voltages to drive something that's expecting a 115 VAC sine wave. Sometimes you get what you pay for, and $8 is not the price of a sine wave.
     
  3. aac9876

    Thread Starter Active Member

    Dec 9, 2006
    124
    0
    it was 30 and it does work... wish I could see the wave though..
     
Loading...