[{"title":"( 3 个子文件 17.24MB ) 7805芯片24v转5v降压电路 含光耦隔离","children":[{"title":"板子","children":[{"title":"2019.SchDoc <span style='color:#111;'> 670.50KB </span>","children":null,"spread":false},{"title":"123123.DSN <span style='color:#111;'> 86.49KB </span>","children":null,"spread":false},{"title":"banzi.PcbDoc <span style='color:#111;'> 18.72MB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]