中英文翻譯資料----開關(guān)電源發(fā)展軌跡(已修改)
2025-06-01 17:27 本頁(yè)面
【正文】 Switching Power Supply Development Track Development of switching power supply (Review Xuanlan) switching power supply (hereinafter referred to switch power) to replace the linear regulator power transistors (hereinafter referred to the linear power) has 30 years of history, is the earliest the series switching power supply, its main Linear power supply topologies and similar, but the power transistor to switch to a later state PWM (PWM) control techniques have been developed for the control switch converters, by PWM switching power supply, it is characterized by using 20 kHz frequency or pulse PWM a PWM switching power supply efficiency is about 65 to 70 percent, while the efficiency of linear power only 30 of a 40 per cent. In the event of the world39。s energy crisis, caused people to a wide range of customs. Linear power supply works in the frequency, the frequency used for the 20 kHZ the PWM switching power supply alternatives, could significantly conserve energy and power technology in the history of the development called 20 kHZ revolution. With ULSI chip size decreases, the size and power is much greater than the microprocessor。 spacecraft, submarines, military power and switch the batteries used portable electronic devices (such as mobile puters, mobile phones, etc.) need more small , Lightweight power. Hence the switch to power a small light requirements, including magic ponents and capacitors the size of small weight. In addition switching power supply requirements to higher efficiency, better performance, reliability, and so on. China39。s switching power supply from China39。s history of the development process of switching power supply can understand the international development of a switching power supply side, although generally speaking, China39。s level of technological development with the international advanced level in an average of 5 to 10 gap. 1970s, I join in black and white TV sets, small and mediumsized puter in the beginning of 5 V ,20200A, 20kHZ ACDC switching power supply. 1980s into mass production and extensive application stage and Development of ~ 5 MHz quasiresonant softswitching power supply. In the 1980s, China39。s munications (such as the switchNote) in the ACDC power supply and DCDC switching power supply in the area of application is still relatively low proportion of six. The end of the 1980s largescale upgrading of China39。s munication power, the traditional ferromagic regulator Rectifier and SCR (Thyristor, formerly known as SCR ponents) Phased power supply for highpower (48 V, 6kw) ACDC Switching Power Supply (often referred to as munications systems switch
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