The maximum of B along elevation direction is closely under the central section of coil.The B of equiamplitude magnetic field is increased by increasing of the output current ...

等幅频磁场磁感应强频电源出电流而,磁场调幅处理能提磁场内磁感应强,提调幅波信号幅值电压,可有效提磁场内磁感应强。