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High-frequency transformers are power transformers with operating frequencies exceeding medium frequency (10kHz). They are mainly used as high-frequency switching power supply transformers in high-frequency switching power supplies. They are also used in high-frequency inverter power supplies and hi
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Harmonics have many very harmful effects on electronic equipment. A common symptom of harmonics is overheating wires and furnace transformers, causing circuit breakers to trip when they shouldn't. Harmonics are classified by name, frequency and order. The name usually refers to whether the harmo
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Resonant transformers can effectively suppress high-frequency harmonics in the power system, thereby reducing electromagnetic interference in the power system and improving the stability and reliability of the power system. In addition, the resonant transformer can also effectively suppress low-freq
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Causes of transformer surge current Transformers play a role in electrical systems It plays an important role and its working principle is to transfer electrical energy from one circuit to another through mutual inductance. When the transformer is reconnected or disconnected from the
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In power supply design, we often hear the word leakage inductance. So what is leakage inductance and what impact does it have on the power supply?1. What is leakage inductance?In a transformer or coupled inductor, it is generated by the primary winding and cannot be coupled to Part of the magnetic f
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Overvoltage protection. The power supply provides stable power to external devices. Each device will have a maximum allowable voltage during normal operation. When the voltage provided is too high, the device will be damaged within a certain period of time, so power supply overvoltage protection is
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1 Rectified power supplyThe principle of rectified power supply is to use the unidirectionality of diodes to convert AC into DC.Commonly used rectified power supplies include single-phase half-wave rectifier circuits, single-phase bridge rectifier circuits, three-phase rectifier circuits and their w
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Absolutely not! Due to its high energy density and special chemical properties, lithium batteries must use a power management chip, that is, a charger IC, for safety and life considerations. ); In addition, the charging chip can optimize the charging curve to the greatest extent, and combined with t
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1. Basic principles of transformer modelingThe actual modeling of isolated power transformers is more complicated. Not only the parasitic parameters between different windings, but also the windings and cores must be considered. parasitic capacitance between. In the high-frequency band, physical-lev
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Suppression Measures for Differential Mode Conducted Emission of Switching Power SupplyThe solution to the differential mode conducted emission of switching power supply from the source is to reduce the spectrum envelope of the switching current, thereby reducing noise. each frequency component of t
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As can be seen from the above figure, the switching power supply is in the process of turning on and off the MOS tube. , the voltage of the primary side of the transformer and the part of the wire connecting the primary side of the transformer to the drain of the MOS tube is changing rapidly. This l
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With the development and innovation of power electronics technology, AC/DC switching power supplies have basically replaced linear power supplies and are developing in the direction of small, lightweight and efficient. At present, switching power supply is an indispensable and key part of the rapid
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