The differential transformer secondary windings are connected in subtractive series so that the output is zero at balance.
差功变压器的次级线圈接成反向串联，以便在平衡时输出为零。
2
The output characteristic of non impedance matching balance traction transformer is deduced by employing the theory of multiwinding transformer and with considering the leakage impedance of windings.
考虑绕组漏阻抗，应用多绕组变压器理论导出了非阻抗匹配平衡牵引变压器的输出特性；
3
In this paper a connection scheme is proposed of which a neutral point is drawned from the balancetransformer, and its electromagnetism principle is also analysed.