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Why does the primary coil of a single-ended flyback transformer need to be connected to a diode? The single-ended flyback transformer is a common circuit design that is widely used in many electronic devices. In this circuit, the primary coil needs to be connected to a diode to ensure the normal o
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When we use a bridge to test the leakage inductance of the transformer, we need to short-circuit the secondary side, and the inductance obtained by testing the primary side is the leakage inductance. Have you ever thought about why you need to short-circuit the secondary side? What is the principle
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Due to the large number of winding layers, the transformer will produce distributed capacitance. When operating at high frequency, these distributed capacitances will have a great impact on the working state of the transformer, such as EMC deterioration, transformer heating, etc. So it's important t
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The impact of harmonics produced by inverters on transformers An inverter is a device that converts DC power into AC power. It is widely used in modern industrial production and family life. . However, the impact of harmonics generated by the inverter on the transformer cannot be ignored. This arti
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What is related to transformer leakage inductance? How much should the leakage inductance of a transformer generally not exceed? 1. Introduction Transformer is one of the most common devices in the power system. Its function is to transform high voltage into low voltage to meet various electricity
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Working principle of transformer bridge circuit Transformer bridge circuit is a circuit widely used in the field of electronic engineering. This kind of circuit takes advantage of the characteristics of the transformer and achieves different electrical effects by connecting the windings in the tran
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Electronic transformer is a commonly used power conversion device and is widely used in power systems. In electronic transformers, magnetic coupling is an important issue because it directly affects the performance and efficiency of the transformer. This article will discuss the issue of magnetic c
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The fundamental cause of harmonic generation in power systems is due to nonlinear loads. When the current flows through the load, it does not have a linear relationship with the applied voltage, and a non-sinusoidal current is formed, that is, harmonics are generated in the circuit. Harmonic freque
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Improving efficiency is a common requirement in today's power supplies and electronic equipment. Traditional transformers can no longer meet today's efficiency requirements. High-frequency transformers can not only improve efficiency, but also save power resources. Its service life is much longer t
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The frequency of electricity we use in our daily lives is 50Hz, which we call low-frequency alternating current. If the transformer works at this frequency, we call it a low-frequency transformer, also called a power frequency transformer. This kind of transformer is bulky and has low efficiency. T
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High-frequency transformers are relative to audio and industrial frequency transformers. However, because the scale of high-frequency is so wide, it is very difficult to clearly divide them. Therefore, transformers with operating frequencies above audio can be collectively referred to as High frequ
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High-frequency transformer is the most important component of switching power supply. There are many topologies in switching power supplies. For example, in a half-bridge power conversion circuit, during operation, two switching transistors are turned on in turn to generate a 100kHz high-frequency
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