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Why use a high frequency transformer?
Mar 15, 2017

Why use a high frequency transformer?


High-frequency transformers as a common electronic components, more often seen in electronic products, Xiao Bian today saw someone ask why use high-frequency transformers, so Xiao Bian collected from the Internet for everyone on the summary of some of this Questions to share with everyone. In order to enable everyone to understand more about high-frequency transformers, this article analyzes two reasons for using high-frequency transformers and introduces the source of high-frequency transformers for everyone. Please see the detailed analysis below.


General high-frequency transformer switching power supplies and electronic rectifiers are becoming more and more popular because they are used in high-frequency circuits and are therefore named "high-frequency transformers" because the higher frequencies are first obtained, so in actual circuits the transformers are designed to The energy source of the oscillation is the transformer output transformer. These two functions are integrated together.

In the switching power supply, presumably this principle: the first power supply (50HZ ac) is rectified, filtered into a dc------ high-frequency transformer oscillation source and the high-frequency stability (output ac voltage constitutes strictly speaking, a High-frequency pulse) ------- rectified DC backup

There are two reasons:

1. The high frequency pulse can be transformed, and the ordinary transformer core does not have a high magnetic permeability of the ferrite core. Can not do this.

 

2. Improve the conversion efficiency, using high-frequency power transformers, in the moment the power supply tube work open - closed state, that is, the conversion of open and closed stop state, so we call it "switching power supply." About 30% of the traditional transformer core loss is low. Unfortunately, the failure rate is also relatively high. Can learn to be older ballasts and electronic ballasts.


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