谁能简单的告诉我这个开关电源各个电子元器件的作用

2025-03-16 06:05:39
推荐回答(2个)
回答1:

新华乡陈家村的提问,我来回答,您好,您这个开关电源,交流电压的可入经过4只整流二极管,整流后在经滤波电容,滤波后得到300V的直流电压,此电在经过开关变压器的初级绕组,给开关管D(注开关管D接的那两个二极管是,起保护开关管的)。开关变压器的次级的第三组线圈为反馈绕组,些绕组在经整流二极管整流后,在经反馈电阳然后给开关C端输入(注些反馈电阻下面那个电容是滤波电容)经过这样的反馈后就使整个电路起振开始工作起来,再然后右边最上面的那个绕组为开关变压器的输出绕,此绕组在经过一只整流二极管,整流后经滤波电容滤波后,电容的两端输出需要的电压。

回答2:

  • 四个二极管--(整流桥)工频整流。电容--工频滤波。变压器--反击变换器的高频变压器。稳压二极管和普通二极管--吸收(尖峰)电路。二极管(右上)高频整流。电容--高频滤波。二极管(右下)电压取样经R,C滤波,反馈而稳压。TOPswish--三端开关稳压块(器)包括基准源、控制电路、驱动电路和功率管等。。

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