A+ Question of the Week: LCD Display Component

AplusQOW3Which component of an LCD display powers the backlight and should be suspected when there is no image until you shine light onto the display?

    1. Rectifier
    2. Inverter
    3. AC adapter
    4. Li-Ion battery

The correct answer is 2.

The inverter in a laptop display converts the DC power provided by the AC adapter back into AC power that the fluorescent bulb acting as a backlight requires.

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