9-12W无电源型LED灯泡的设计资料，注意，灯珠用的是3芯串联的5730 （24灯三芯单IC 5730 40mm PCB设计资料）IC用的是RY8201 上电就可以工作，调试非常简单。-9-12W without power type LED bulb design data, note that the lamp beads using a 3-cell series 5730 (24 light three-core single IC 5730 40mm PCB design data) IC is used on RY8201 power can work, commissioning very simple.