High-frequency transformer

Generation of high-frequency transformers

The conversion efficiency of conventional transformer is low. The size is large. If it is made into a mobile phone charger, the volume is very large and inconvenient to carry. In order to solve this situation, high frequency transformers appeared.

As the name implies, the input end of the high-frequency transformer is high-frequency alternating current. The alternating current is rectified into direct current after passing through the rectifier bridge. The direct current is turned into a very high-frequency alternating current under the action of the PWM controller.

The alternating current is stepped down by a high-frequency transformer. Under the condition of the same power, the iron core and number of turns of the high-frequency transformer are less than those of the power frequency transformer, which reduces the size of the transformer. It also reduces the size of the charger.