Filter circuit compatible with overcurrent

The utility model discloses a filter circuit compatible with overcurrent, and relates to overcurrent and applications of a filter circuit. The filter circuit comprises an input port, a low-pass circuit, a high-pass circuit and a hybrid port, wherein the low-pass circuit is formed by connecting a low-pass filter circuit and a first overcurrent circuit in parallel; the high-pass circuit is formed by connecting a high-pass filter circuit and a second overcurrent circuit in parallel; and the low-pass circuit and the high-pass circuit are connected between the input port and the hybrid port in parallel. Low-frequency signals and voltage of the input port pass through overcurrent and filtering of the low-pass circuit and get to the hybrid port; and high-frequency signals and voltage of the input port pass through overcurrent and filtering of the high-pass circuit and get to the hybrid port. The filter circuit disclosed by the utility model can realize power supply for under-hung active auxiliary equipment while realizing transmission for CATV hybrid data signals.