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In the field of switching power supply technology, people are developing power electronic devices and switching frequency conversion technology, which promote the development of switching power supply in the direction of light, small, thin, low noise, high reliability and anti-interference. Switching power supply can be divided into two categories: AC/DC and
The switching power supply consists of four parts: main circuit, control circuit, detection circuit and auxiliary power supply.1. Main circuit impact current limiting: limiting the input current impulse at the instant of switching on the power supply. Input filter: Its function is to filter the clutter existing in the power grid and to impede the clutter gen
