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    Sony Vaio VPC Z13 PWM for backlight details

    Discussion in 'VAIO / Sony' started by Paloseco, Oct 30, 2016.

  1. Paloseco

    Paloseco Notebook Evangelist

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    These are the details about the PWM used to regulate screen backlight brightness on the Sony Vaio VPCZ13M9E:

    • It has 9 brightness levels
    • 9th level is maximum brightness and there's not PWM
    • The rest of the brightness levels (1-8) are PWM regulated through duty cycle
    • PWM frequency is marginally higher than 200 Hz
    • PWM period if marginally lower than 5 ms (miliseconds)
    http://laptopmedia.com/ has a lot of information for PWM regarding new laptops and monitors.
    http://www.retropcmania.com/ has a lot of information regarding PWM use in laptops.

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    Last edited: Oct 30, 2016
    Paloseco, Oct 30, 2016
    #1