No matter what the efficiency become the consensus of transformer, the traditional transformer cannot meet the requirements of current efficiency, high frequency transformer can not only improve the efficiency, but also can save electricity, also than the average on the service life of the transformer is much longer, and it has dual social and economic benefits in order to save energy and protect the environment. But high frequency volume is much smaller than the average transformer.
As the magnitude of the induced potential of the transformer depends on the change of internal magnetic flux per unit, that is to say, the faster the flux changes, the greater the induced potential. Although the magnetic core of the high-frequency transformer is small and the maximum magnetic flux is not large, it works at the high frequency and the change speed of magnetic flux is fast, so it can generate enough electric potential when the magnetic core is small and the number of coil turns is small, while the low frequency is the opposite.
2. The design and calculation of the transformer show that under the same power condition, the higher the frequency, the smaller core and the smaller number of turns per volt. The design of high frequency transformer should start from magnetic core. The magnetic core of switch power transformer
is mostly soft magnetic material used in low magnetic field. It has high magnetic permeability, low coercivity and high resistivity. With high permeability, the magnetic core volume can be reduced
under the requirement of output certain power.