Classification of switching power supply transformers

Classification of switching power supply transformers   The switching power transformer is divided into single-excited switching power transformer and double-excited switching power transformer, and the working principle and structure of the two switching power transformers are not the same. The input voltage of the single-excited switching power transformer is unipolar pulse, and it is also divided into positive and negative excited voltage output. The input voltage of the double-excited switching power transformer is a bipolar pulse, which is generally a bipolar pulse voltage output. Characteristic parameters: Voltage ratio: refers to the ratio of the primary voltage to the secondary voltage of the transformer. Dc resistance: copper resistance. Efficiency: output power/input power *100[%] Insulation resistance: the insulation capacity between the winding of the transformer and between the core. Electrical strength: The degree to which the transformer can withstand the sp…