Alien frequencies signal constant current output device based on electric current source

The utility model discloses an alien frequencies signal constant current output device based on electric current source, change DC module, contravariant module, phase locking conditioning module, current stabilization module, a filter module, keep apart and amplify module, signal detection module, the 2nd filter module, AD module, DSP module, key entry module, LCD display module including power interface module, active rectifier module, DC. The utility model discloses based on electric current source constant current output principle, have the characteristics that current output is stable, the distorsion factor is little, the degree of distortion is low, the interference killing feature is strong, can export the alien frequencies current signal continually and steadily under the various complex environment condition in scene to realize that the accurate of earthing device performance parameters detects. 本实用新型公开种基于电流源的异频信号恒流输出装置，包括电源接口模块、有源整流模块、DC转DC模块、逆变模块、锁相调理模块、稳流模块、第滤波模块、隔离放大模块、信号检测模块、第二滤波模块、A/D模块、DSP模块、键盘