The formulae for input impedance, output impedance and main magnetic flux are derived. The influence of resistance, induction and voltage ration to output impedance of transformer are discussed.

• 摘要导出了变压器输入阻抗、输出阻抗、主磁通的计算公式，讨论了电阻、电感以及变比对变压器输出阻抗的影响。