Brief introduction of switching power supply;
With the rapid development of power electronics technology, the relationship between power electronics equipment and people's work and life is increasingly close, and electronic equipment cannot be separated from reliable power supply, in 1980s, the computer power supply * * realized the switching power supply, took the lead in completing the upgrading of computer power supply, and in 1990s, the switching power supply successively entered various fields of electronic and electrical equipment, program-controlled exchange, communication, electronic testing equipment power supply, control equipment power supply and so on have been widely used in switching power supply, which has promoted the rapid development of switching power supply technology.
Switching Power Supply is a kind of power supply that uses modern power electronics technology to control the time ratio of switching transistor on and off to maintain stable output voltage. Switching power supply is generally modulated by pulse width (PWM)Control IC and switching devices (MOSFET, BJT, etc)Composition.
Compared with linear power supply, the cost of switching power supply increases with the increase of output power, but the growth rates of the two are different.
The cost of linear power supply is higher than that of switching power supply at a certain output power point.
With the development of power electronics technology and **, the switching power supply technology is constantly **, and this cost reversal point is increasingly moving to the low output power end, this provides a wide development space for switching power supply. Dear Customer: Hello!
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