Multi-interface power adapter circuit

The embodiment of the invention discloses a multi-interface power adapter circuit, which comprises: one or more power circuits connected with an external power supply and used for converting an external voltage into a charging voltage; a main control circuit which is connected with the one or more power supply circuits and is used for providing the charging voltage for external equipment; and a decoding circuit which is connected with the main control circuit and is used for acquiring whether the external equipment is connected or not and generating a corresponding prompt signal. According tothe multi-interface power adapter circuit provided by the embodiment of the invention, the multiple pieces of external equipment are connected at the same time, and the states of the plurality of pieces of connected external equipment are obtained in real time, so that the problem that the connection states of the equipment cannot be obtained when the power adapter circuit is connected with the multiple pieces of equipmen