| 摘要 |
A power adapter, a cable, and a charger. The power adapter comprises an output port, a comparison circuit, and a voltage control and rectification circuit. The output port comprises a voltage output terminal, a signal feedback terminal, a first grounding terminal, and a second grounding terminal. The comparison circuit is electrically connected to the signal feedback terminal, and is used for comparing a charging input voltage, fed back by the signal feedback terminal, of a charged device with a reference voltage, so as to obtain a comparison voltage and output the comparison voltage to the voltage control and rectification circuit. The voltage control and rectification circuit is electrically connected to the voltage output terminal and the comparison circuit separately, and is used for processing an input alternating-current signal into a charging output voltage, compensating the charging output voltage by using the comparison voltage input from the comparison circuit, and outputting the compensated charging output voltage through the voltage output terminal, so as to charge the charged device, the reference voltage being a rated charging voltage of the charged device. |
