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What is a power frequency transformer? What is the difference between a power frequency transformer and an ordinary transformer

Power frequency transformers are also called low frequency transformers to show that they are different from high frequency transformers used in switching power supplies. Power frequency transformers have been used in large quantities in traditional power supplies in the past, and the stability of these power supplies uses linear adjustment, so those traditional The power supply is also called a linear power supply. The power frequency generally refers to the frequency of the mains electricity, which is 50Hz in our country and 60Hz in other countries. The transformer that can change the voltage of the alternating current at this frequency is called a power frequency transformer.

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The role of high frequency transformer_where is the high frequency transformer used

Now, switching power supplies generally use half-bridge power conversion circuits, which contain high-frequency transformers and transistors. When the circuit is working, the transistors are turned on in turn to generate high-frequency pulses with a frequency of 100KH, which are worthy of high-frequency pulses. Then they are stepped down by a high-frequency transformer, and finally the alternating current with a lower voltage is output. The specific voltage value is determined by each winding coil in the high-frequency transformer. The turns ratio is determined. Generally, three transformers are used, which are called the main transformer, the drive transformer and the auxiliary transformer. Each transformer has its own measurement specifications and functions, so one is indispensable.

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What is a power frequency transformer? What is the difference between a power frequency transformer and an ordinary transformer

The role of high frequency transformer_where is the high frequency transformer used

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