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 ...

等磁场的磁感应强度随电源出电流的增加而增加,磁场调提磁场内的磁感应强度,提调波信号的值电压,可有效提磁场内的磁感应强度。