Power transducer dynamic node electric potential balance common mode EMI inhibiting method

This invention discloses a method for inhibiting dynamic node potential balance common-mode EMI to form same du/dt opposite phase namely balanced potential dynamic node pair in power transformer maincircuit and use power switch apparatus mounted on a same earth radiator at each node by circuit transformation to process approximately equal earth distribution capacitance of each node. The inventedadvantage is to reduce power transformer common mode EMI without adding any external circuit and apparatus by varying internal circuit structure in power transformer to greatly reduce common mode current 1 cm flowing through rediation to the earth.