Contact Us
TEL: +86-752-7803358
FAX: +86-752-5872218
E-mail: sales@magtop.com
Address: Building A, Pingnan Geumgok Power Ind. Park, Zhongkai  High-tech Zone, Huizhou, Guangdong, China.
Home > Exhibitions > Content
The high-frequency transformer is introduced according to the classification of its operating frequency
Feb 24, 2018

The high-frequency transformer is introduced according to the classification of its operating frequency


High-frequency transformers are power transformers whose operating frequency exceeds mid-frequency (10kHz). They are mainly used as high-frequency switching power transformers in high-frequency switching power supplies, and also used in high-frequency inverter power supplies and high-frequency inverter welding machines for high-frequency inverters. Transform the power transformer. According to its operating frequency, we divide the high frequency transformer into the following categories:

 

First, divided by frequency range

 

1. kHz high-frequency transformer, which refers to a high-frequency transformer whose operating frequency is from 20kHz to several hundred kHz;

 

2. High-frequency transformer of MHz level, which refers to a high-frequency transformer whose operating frequency is above 1MHz.

 

Second, divided by operating frequency band

 

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

 

2. Broadband transformers, which refer to transformers that operate over a wide frequency range, such as transformer transformers, communication transformers, and broadband power amplifier transformers.

 

When the transmission power of the high-frequency transformer is relatively large, the power device generally adopts IGBT. Since the IGBT has a tail-off phenomenon of the off current, the operating frequency is relatively low; a, which has a relatively small transmission power, can use a MOSFET and the operating frequency is relatively high.


Previous: How to design a high-efficiency high-frequency transformer?

Next: Interference Problems of High-frequency Switching Power Transformers and Analysis of Solutions