Intelligent identification technology in linear adapters enables them to recognize the connected devices and adjust the power output parameters accordingly, enhancing both safety and efficiency. The principle is mainly based on communication protocols and sensor - based detection.

　　One common approach is the use of communication protocols between the adapter and the device. For example, the Power Delivery (PD) protocol is widely used in modern adapters. When a device is connected to the adapter, the two devices exchange information through a communication channel, usually over the data lines of the charging cable. The device sends its power requirements, such as the desired voltage and current levels, to the adapter. The adapter then analyzes this information and adjusts its internal power conversion circuit to provide the appropriate power output.

　　Sensor - based detection is also an important part of intelligent identification. Current sensors and voltage sensors are installed inside the adapter. These sensors continuously monitor the current and voltage at the output terminal. When a new device is connected, the sensors detect the changes in electrical characteristics, such as the initial inrush current and the load impedance. Based on these detected values, the adapter can determine the type of device connected and estimate its power requirements.

　　Some adapters also use more advanced technologies, such as digital signal processing (DSP). The DSP can analyze the complex electrical signals from the sensors in real - time, making more accurate judgments about the connected device. It can also adapt to changes in the device's power consumption during the charging process, dynamically adjusting the power output to optimize the charging speed and protect the device's battery from over - charging or over - current situations. Additionally, intelligent identification technology can also be used to detect and prevent the connection of counterfeit or incompatible devices, enhancing the overall safety of the charging system.

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