The utility model relates to the technical field of circuits, in particular to an interphone charging protection socket circuit. Comprising a single-
chip microcomputer, a first pin of the single-
chip microcomputer is divided into two paths which are respectively connected with a
cathode of a sixth light-emitting
diode and a
cathode of a seventh light-emitting
diode, an
anode of the sixth light-emitting
diode and an
anode of the seventh light-emitting diode are combined and then jointly connected with one end of a thirteenth
resistor, the other end of the thirteenth
resistor is connected with + 3.3 V
voltage, a second pin of the single-
chip microcomputer is divided into two paths which are respectively connected with an
anode of the sixth light-emitting diode and an anode of the seventh light-emitting diode. The other end of the first button and the other end of the fourteenth
capacitor are combined and then jointly grounded, and a third pin of the single-chip microcomputer is divided into two paths which are respectively connected with a
cathode of a fifth light-emitting diode and a cathode of a third light-emitting diode. Compared with the prior art, the interphone charging protection socket circuit is improved on the basis of an existing interphone charging protection socket circuit, the automatic charging
recovery function is achieved through the design of the single-chip microcomputer, and the power-on
recovery button is additionally arranged and used for manually recovering the charging function after power-off protection.