Small vibration noise The iron core has no air gap, which can reduce the induced vibration noise of the iron core, and the winding evenly and tightly wraps the annular iron core, effectively reducing the "buzzing" sound caused by magnetostriction. Low operating temperature Because the iron loss can reach 1. 1W/kg, the iron loss is very small, and the temperature rise of the iron core is low, so the temperature rise of the transformer is low. There is only one mounting screw in the center of the ring transformer, which is easy to install, so it is especially easy to install and disassemble quickly in electronic equipment.