Weak magnetic DC generation system includes:

* high uniformity of Helmholtz coils (1D, 2D, 3D)

* high precision constant current source

* high resolution of fluxgate magnetometer and digital control software

A user can freely select the dimension size, magnetic field intensity and uniform area, also can choose composite coil, used as shielding simulation of geomagnetic field and magnetic field generating minimum occurs, up to 0.1nT, maximum magnetic field up to 500 Gauss.