Self-stabilizing conducting comb-like signal source

The utility model discloses a self-stabilizing conducting comb-like signal source which comprises a shielding housing, an external signal wire, a plug, a built-in charging protection module, a rechargeable battery and a circuit board, wherein the circuit board comprises a boosting voltage-stabilizing circuit, a linear voltage-stabilizing circuit, a crystal oscillating circuit, a frequency division selective circuit, a frequency division shaping circuit, a stepped shaping circuit, a balanced output circuit; a charging source charges the rechargeable battery through the charging protection module; the rechargeable battery provides power for the circuit board; and comb-like spectral lines are formed by the circuit board and signals are output by the plug. The self-stabilizing conducting comb-like signal source has simple structure and stable performance, is convenient to operate and is mainly used for checking the accuracy of an electromagnetic interference test system, or is used for intermediate check on devic