Iyo polarity uye mhando yeiyo SCR unogona kutongwa ne pointer multimeter kana dijitari multimeter. Yunnan Changhui Chishandiso Kugadzira Co, Ltd. zvakasiyana zvakazivisa kushandiswa kweaya ma multimeter maviri mukuyera polarity uye mhando yeSCR.

1. Shandisa pointer multimeter kuti utarise polarity uye hunhu hweSCR

Zvinoenderana nemutemo wePN junction, kuramba pakati pematanda matatu e thyristor kunogona kuyerwa ne ohmic block “R × 10” kana “R × 100” block yekutonga kana yakanaka kana yakaipa. Iko kune PN junction pakati pesimba remagetsi G uye iyo cathode K ye thyristor. Pasi pemamiriro ezvinhu akajairika, kumberi kwayo kuramba kuri pakati pemakumi emakumi ma ohm kusvika kumazana eohmm, uye iyo yekudzoresa kuramba inowanzo kuve yakakura kudarika kumberi kuramba. Dzimwe nguva kuyerwa kwakadzoserwa kwekudzivirira kwedanda kuri kushoma, izvo hazvireve kuti danda rekudzora rine hunhu husina kutsarukana. Izvo zvinonyanya zvichienderana nekuti inosangana nehunhu hwePN junction.

2. Shandisa dhijitari multimeter kuti utarise polarity uye hunhu hweSCR

Tonga iyo electrode yedhijitari multimeter ye thyristor kune diode block, batanidza iyo tsvuku bvunzo inotungamira kune imwe electrode, uye iyo nhema bvunzo inotungamira kuti ubate mamwe maviri ma electrode zvakateerana. Kana imwe yacho ikaratidza kuti iwo magetsi ari mashoma chegumi chevolt, ipapo red test lead inosunganidzwa neiyo control electrode G, iyo nhema bvunzo lead inotungamirwa necathode K, uye yasara ndiyo anode A. Kana iyo inoratidza kufashukira nguva mbiri, zvinoreva kuti iyo tsvuku bvunzo lead haina kubatana neiyo control electrode, uye iyo electrode inoda kutsiviwa uye kuyedzwazve.

Kuti uedze kugona kwekukonzeresa kwetristristor, iyo multimeter yedhijitari yakagadzirirwa kune PNP block. Panguva ino, maburi maviri eE pane hocket socket ari kubhadhariswa zvakanaka, uye iyo C gomba iri kubhadhariswa zvisizvo, uye iyo voltage iri 2.8V. Iwo ma electrode matatu eiyo thyristor anotungamirwa kunze newaya, iyo anode A uye cathode K lead inoiswa mumakomba E uye C zvakateerana, uye iyo electrode yekudzivirira G yakamiswa. Panguva ino, thyristor yadzimwa, iyo anode yazvino zero, uye 000 icharatidzwa.

Isa iyo pole pole G mune imwe E gomba. Iko kukosha kwakaratidzwa kuchawedzera nekukasira kubva ku000 kudzamara chiratidzo chekufashukira charatidzwa, uye ipapo chinja chinoshanduka kuita 000, uyezve chinoshanduka kubva pa000 chichifashukira zvakare, zvichingodaro. Iyi nzira inogona kushandiswa kuona kana kukonzeresa kwetristristor kuri kuvimbika. Nekudaro, iyo nguva yekuyedza inofanirwa kupfupikiswa zvakanyanya sezvinobvira nekuda kweiyo irinani hombe razvino mukuyedza kwakadai. Kana zvichidikanwa, dziviriro yekudzivirira yemazana mazana ohm inogona kubatanidzwa mune akateedzana pane anode yeSCR.

Kana iyo NPN block yashandiswa, iyo anode A ye thyristor inofanirwa kuve yakabatana kune gomba C, uye iyo cathode K kugomba E kuona kuti yakashandiswa kumberi voltage iri. Paunenge uchitarisa kugona kwekukonzeresa, usaise electrode yekudzora mugomba reB, nekuti iwo voltage yeB B iri yakaderera, uye iyo SCR haigone kubatidzwa.