What are the classifications of high frequency transformers?

2019-04-28 11:38:08 JUKE CHINA ODM OEM Transformer factory Read

What are the classifications of high frequency transformers?

 The high-frequency transformer is a power transformer with a working frequency exceeding the intermediate frequency (10 kHz). High frequency transformer is mainly used for high-frequency switching power supply transformers in high-frequency switching power supplies, and also for high-frequency inverters in high-frequency inverter power supplies and high-frequency inverter welding machines. Variable power transformer. According to their working frequency, we divide the high frequency transformer into the following categories:

First, according to the frequency range

1. kHz high frequency transformer, which refers to a high frequency transformer with an operating frequency of 20 kHz to several hundred kHz;

2.MHz high frequency transformer, which refers to a high frequency transformer with a working frequency above 1MHz.
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 Second, according to the working frequency band

1. Single-frequency or narrow-frequency high-frequency transformer, which means that the operating frequency is single frequency or a very narrow frequency band, such as converter transformer, oscillator transformer, etc.;

2. Broadband transformer, which refers to a transformer operating in a wide frequency range, such as an impedance transformer transformer, a communication transformer, a broadband power amplifier transformer, and the like.

When the transmission power of the high-frequency transformer is relatively large, the power device generally adopts an IGBT. Since the IGBT has a shutdown current tailing phenomenon, the operating frequency is relatively low; the transmission power is relatively small, and the MOSFET can be used, and the operating frequency is relatively high.