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1.关断性能的检测在四端晶闸管被触发导通状态时,若将阳极A与阳极门极GA或阴极K与阴极门极GK瞬间短路,A、K极之间的电阻值由低阻值变为无穷大,则说明被测晶闸管的关断性能良好。2.反向导通性能的检测分别将晶闸管的阳极A阳极门极GA与阴极K与阴极门极短接后,用万用表R×lkΩ档、黑表笔接A极,红表笔接K极,正常时阻值应为无穷大;再将两表笔对调测量,K、A极间正常电阻值应为低阻值(数千欧姆)。
1. Turn-off performance test In the four-terminal thyristor is triggered on state, if the anode and the anode gate GA or cathode K and cathode gate GK instant short circuit, A, K between the resistance of the resistance from low resistance The value becomes infinity, then the thyristor measured shutdown performance is good. 2. Reverse Conduction Detection Thyristor anode anode gate GA and cathode K and cathode gate shorted, with a multimeter R × lkΩ file, the black pen then A pole, the red pen then K pole, when normal The resistance should be infinite; and then two meters to adjust the measurement, K, A normal between the resistance value should be low resistance (thousands of ohms).