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12-Volt DQ-MS122586P Replacement AC Adapter for Microsoft Laptops - Black, 240V Input, 12V Output, Energy Star Certified
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Protege All-in-one Travel Power Adapter, Multiple AC Adapters for Global Versatility, Surge Protection, 10AMP
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30 sie 2024 · Unplug the AC adapter from the wall outlet. Unplug the AC adapter from the laptop. Disconnect the power cable from the AC adapter. Connect the power cable firmly to the AC adapter. Verify if the LED on the AC adapter is on. If the LED is not turning on, try a compatible, known-good AC adapter.
AC adaptors usually consist of a transformer, to lower the voltage from the outlet to levels more suitable for charging the device; a rectifier, to transform the sinusoidal AC wave into a pulsed DC wave; and a filter to smooth out the signal in order to provide a sufficiently stable voltage.