[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fa_onveoXffZJbGsREZVWHNh-zXEb0X3zLfXhZNj6kV4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-06-23 14:57:01",207005636,[8,9,10,11],"小于 300mA","大于 800mA","等于 350mA","无特殊要求",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},30,"df11604b78736408d75a12dda883ee0f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1e98d74cc5304bf327621967c1ccfc27.jpg","LED驱动与智能控制","543fb734a7f24f3ebc7e2fb0e98eea24","LED调光台灯驱动电路","为避免 LED 光源出现闪光,续流电感的饱和电流应( )",[21,32,41,50,59,68,77,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],207005630,[25,26,27,28],"100-200 lx","300-500 lx","500-700 lx","700-1000 lx","LED 台灯工作时,国际标准要求的照度范围是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],207005631,[36,37,38,39],"350mA-400mA","500mA-600mA","750mA-1A","1.5A-2A","设计 3×1W 的白光 LED 串联电路时,适配器的输出电流应选择( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],207005632,[45,46,47,48],"5V-12V","8V-40V","12V-24V","24V-48V","PT4115 驱动芯片的输入电压范围是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],207005633,[54,55,56,57],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F68887dedbef79acb9ba627fb77ea728a.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa3d53a2e99d39616ed4de30668e4c16e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9d817c1a57c83386b21c55e5af3a67a1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F47457f3beb17cdfd86b3bc8c7bb31af5.png\">","计算 LED 驱动电路的采样电阻时,公式为( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],207005634,[63,64,65,66],"0.286Ω","0.56Ω","1.2Ω","2.8Ω","当 3 个 1W 的 LED 串联时(额定电流 350mA),采样电阻\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fac90d95f830b743bb3eed2c14ae2ed1f.png\">的理论值约为( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],207005635,[72,73,74,75],"普通硅二极管","肖特基二极管","稳压二极管","发光二极管","PT4115 驱动电路中,续流二极管应选用( )",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],207005637,[84,85,86,87],"低于 0.3V","高于 2.5V","介于 0.5V-2.5V","始终导通","PT4115 芯片进入待机状态的条件是 DIM 引脚电压( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],207005638,[93,94,95,96],"60","70","80","90","LED 台灯的显色指数 Ra 应不低于( )",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],207005639,[102,103,104,105],"85%","92%","97%","100%","PT4115 驱动电路的效率最高可达( )"]