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What is the use of Pulse Transformer in Ethernet?

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Author : CETUS INTL
Update time : 2023-06-01 14:06:00
Introduction: Anyone who has known it knows that a pulse transformer is essentially a broadband transformer. Broadband transformer can reduce certain losses and have non-linear distortion, so they are used in the communication industry. This article mainly introduces the working principle of the pulse transformer and its main functions.

What is the use of Pulse Transformer in Ethernet?
Brief Introduction of Pulse Transformer

For pulse transformers, the main consideration is the problem of waveform transmission. As a broadband transformer, as long as the waveform can meet the design requirements of the transformer, the magnetic core can also work in some nonlinear regions. Not only that, compared with the transformer used for communication, the size of the pulse transformer is much smaller than that of the transformer used for communication. In addition, the transmission loss rate of the pulse transformer is smaller than that of the transformer used for communication. The latest method of analyzing pulse transformers is to analyze the distribution parameters of pulse transformers, which is also called transmission-type pulse transformers.
How Pulse Transformers Work
The working principle of the pulse transformer is that the pulse variable pressure converts the sinusoidal voltage transmitted by the power supply into a narrow pulse output voltage by using the magnetic saturation of the iron core. For example, the ignition of the burner uses this pulse transformer principle. The pulse transformer is a transient transformer in the working state. This sentence means that the pulse process of the pulse transformer is extremely short, which means that it occurs within a short period of time. From its function image , the top of the image of the pulse process is a very smooth square wave, but the working process of the ordinary transformer is a continuous magnetization process, and its function image is a sinusoidal change image. Not only that, the pulse signal of the pulse transformer is a repeating cycle with a certain interval. The pulse transformer has only one positive voltage or one negative voltage, and the pulse signal it sends out is alternating, continuous and repetitive. When performing waveform transmission, the pulse transformer cannot be distorted, so the amplitude of the leading edge and top drop of the waveform must be relatively small.
The role of pulse transformers
Pulse transformers are widely used in radar or some switching technologies. They are generally used in power switches to transform AC power. The frequency of the signal sent by the pulse transformer is generally between 10KHZ and 100KHZ, which is much higher than the frequency of the signal sent by the ordinary transformer.