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 ...
等频
场
感应强度随
频电源输出电流
增加而增加,
场调
能提
场
感应强度,提
调
波信号
值电压,可有效提
场
感应强度。