What is the reason why the transformer is so hot? Is the manufacture of magnetic ring transformer and the selection of magnetic ring (diameter) related to signal frequency? Ask prawns for help ..

1, improper selection of magnetic core material;

2. The resistivity of the coil material is too large or the wire diameter does not match the current;

3. The load is short-circuited.

If the working frequency is too high, then the AC circuit theory is not suitable for use, and the electric field theory should be changed to guide the design and debugging. The distribution parameters will affect the circuit operation, and the shape should also be considered.