[{"title":"( 2 个子文件 5.9MB ) 12V-15W开关电源电路设计方案.zip","children":[{"title":"开关电源适配器电路+PCB源文件+BOM清单等.rar <span style='color:#111;'> 5.77MB </span>","children":null,"spread":false},{"title":"12V、15W开关电源设计原理图PCB设计.rar <span style='color:#111;'> 140.49KB </span>","children":null,"spread":false}],"spread":true}]