选择万用表电阻R×1Ω档,用红、黑两表笔分别测任意两引脚间正、反向电阻,若测得某一引脚与其他两引脚都不通,则此脚为T2极,如图1所示。再仔细测量T1、G极间正、反向电阻,读数相对较小的那次测量的黑表笔所接的引脚为T1,红表笔所接引脚为控制极G。将黑表笔接已确定的T2, Select the multimeter resistance R × 1Ω file, with red and black test leads were measured between any two pins positive and negative resistance, if the measured pin and the other two pins are not connected, then the pin is T2 pole, such as Figure 1 shows. Then carefully measure T1, G between the positive and negative resistance, the reading is relatively small that measured black pen connected to the pin T1, red pen connected to the pin for the control pole G. The black pen then identified T2,