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85问答库 > 用ob2212ap构成的洗衣机开关电源炸裂，检修换电源块、全桥、稳压管、四

用ob2212ap构成的洗衣机开关电源炸裂，检修换电源块、全桥、稳压管、四

2025-04-08 08:44:05

推荐回答（4个）

回答1：

交流电源输入时一般要经过厄流圈一类的东西,过滤掉电网上的干扰,同时也过滤掉电源对电网的干扰;在功率相同时,开关频率越高,开关变压器的体积就越小,但对开关管的要求就越高;开关变压器的次级可以有多个绕组或一个绕组有多个抽头,以得到需要的输出;一般还应该增加一些保护电路,比如空载、短路等保护,否则可能会烧毁开关电源

回答2：

输出电压也这样变化的话更换3脚上的稳压二极管看看！

回答3：

我也遇到同样问题，不知道下一步该如何修。

回答4：

检查后级负载有没有短路

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