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
的
感应强度随
频电源输出电流的增
而增
,
处理能提
内的
感应强度,提
波信号的
值电压,可有效提
内的
感应强度。