这是前几年痴迷逆变时用洞洞板搭建的12V逆变器前级,今天拿出来晒晒,功率300W,变压器用的是EI40,SG3525加图腾驱动3对75NF75,采用浅闭环,具有过载短路保护,跟据电动车控制器的外壳尺寸做的,刚好能装进里面,空载时波形如图,带一台式电脑稍微有点尖峰,外壳温热,带载波形没拍。后期还做了个正弦波后级,可能是布线有问题,有时候上电就烧ir2113,由于工作忙就没再继续做。
同时期还做了个48V的,变压器EE55,两对90N20,不做详细阐述了,上图
等过段时间有空了再重新前后级,完成正弦波,成品成熟的逆变器也不贵,图的就是DIY的乐趣
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