线径的计算： 一般铜线截面积每平方mm取值5安培电流。（高频取4.95，低频取3.5.）(Calculation of wire diameter: The average copper wire section is 5 amperes per square mm. (high frequency takes 4.95, low frequency takes 3.5.))

该资料给出了开关电源高频变压器的计算方法(The calculation method of high-frequency transformer for switching power supply is given.)