Communication high-frequency switching power supply includes: characteristics, principle, calculation, drive, control and protection of various basic DC converters; The technical development trend of switching power supply products is high reliability, high stability, low noise, anti-interference and realization module Chemical. Small, thin, and lightweight Because the power supply is light, small, and thin, the key is high-frequency. Therefore, foreign countries are currently working on the simultaneous development of new high-intelligent components, especially to improve the loss of secondary rectifiers and miniaturization of transformer capacitors. At the same time, SMT technology is used to arrange components on both sides of the circuit board to ensure that the switching power supply is light, small and thin. High efficiency In order to make the switching power supply light, small, thin, high frequency (switching frequency up to megahertz) is an inevitable development trend. The high frequency will inevitably increase the power consumption of the traditional PWM switch (hard switch), reduce the efficiency, improve the noise, and fail to achieve the high frequency and high efficiency expected benefits, thus achieving zero voltage conduction and zero current off. Broken soft switching technology will become the mainstream of switching power supply products in the future. With soft switching technology, the efficiency can reach 85-88%.
Communication high-frequency switching power supply This book contains: the characteristics, principles, calculation, drive, control, protection of various basic DC converters; practical solutions and development of high-frequency switching rectifiers for communication; single-phase and three-phase power Factor correction; single-stage converter; application and development of soft switch in high-power DC converter stage; three-level converter; electromagnetic component design and PSPICE simulation; uninterruptible power supply, lightning protection, monitoring of station power system and other related technologies. This book is suitable for college students, graduate students and related technical personnel in communication, power electronics, industrial automation, and can be used for teaching, self-study and reference.
With the development of the times and the needs of work, more and more young people have taken up the position of team leader, but most of them rely on the master to take the apprentice or rely on their own routine, to accumulate experience to understand and understand what It is management and therefore lacks systematic management knowledge.
Experience is very important, but experience is not systematic after all, there are some blind spots, so we must go through systematic theoretical training to improve the management level, so that the management work from spontaneous to conscious level. ://news.chinawj.com.cn Submission:
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