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dcdc变换器的原理

更新时间: 2020-07-09 00:00:00     

dcdc变换器的原理:

首先通过自激振荡电路把输入的直流电转变为交流电,再通过变压器改变电压之后再转换为直流电输出,或者通过倍压整流电路将交流电转换为高压直流电输出;

直流变换电路主要工作方式是脉宽调制,即PWM工作方式,基本原理是通过开关管把直流电斩成方波,或脉冲波,通过调节方波的占空比,即脉冲宽度与脉冲周期之比来改变电压。

关键词: dcdc 变换 原理

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