How to output spike pulse group of high frequency transformer

At the moment of conduction, the primary coil produces a large surge current, and a high surge peak voltage appears at both ends of the primary coil; At the turn-off time, due to the leakage flux of the primary coil, part of the energy is not transferred from the primary coil to the secondary coil, and an attenuation oscillation with spikes is formed in the circuit, which is superimposed on the turn-off voltage to form a spike pulse group.

High-frequency transformer is a power transformer whose working frequency exceeds the intermediate frequency. It is mainly used as high-frequency switching power supply transformer in high-frequency switching power supply, as well as high-frequency inverter power supply transformer in high-frequency inverter welding machine.