Low-frequency transformadors are used to propagate signal voltage and signal power, and are also used to achieve impedance matching between circuits, with isolation function.
In general, low-frequency transformadors refer to "power frequency transformadors" se utiliza para cambiar el voltaje por debajo (50 Hz), y el núcleo de hierro es generalmente una lámina de acero al silicio con alta conductividad magnética.
High-frequency transformadors refer to transformadors that operate at high frequencies as energy changes. Due to the high frequency of the magnetic field, the silicon steel sheet will produce eddy currents (the conversion speed of the small magnet in the silicon steel sheet cannot keep up), so the high-frequency transformador generally uses "high-frequency ferrite" as the magnetic core.
There is no difference in principle between high-frequency transformadors and low-frequency transformadors, but due to the different frequencies of high-frequency and low-frequency, the iron core used for transformadors is also different.