Umgaqo osebenzayo wokunyibilikisa iziko lomlilo: thyristor

Kwinkqubo yokusebenza ye kumnya T, i-anode A kunye ne-cathode K zixhunyiwe kunikezelo lwamandla kunye nomthwalo ukwenza isekethe ephambili ye-thyristor, kunye nesango G kunye ne-cathode K ye-thyristor inxibelelene nesixhobo sokulawula i-thyristor ukwenza isekethe yolawulo kummeli

Iimeko zokusebenza kwethristristor yakho:

1. Xa i-thyristor yakho iphantsi kwevolthi efanelekileyo ye-anode, i-thyristor ivuliwe kuphela xa isango linamandla ombane olungileyo. Ngeli xesha, i-thyristor ikwimeko yokuqhubela phambili, eyimpawu ye-thyristor’s thyristor, enokulawulwa.

2. Xa i-thyristor ivuliwe, okoko nje kukho umbane we-anode ethile, nokuba yeyiphi na isango lombane, i-thyristor ihlala ivuliwe, oko kukuthi, emva kokuba i-thyristor ivuliwe, isango liphulukana nomsebenzi walo. Isango lisebenza kuphela njenge-trigger

3. Xa i-thyristor ivuliwe, xa ombane wesekethe ongundoqo (okanye okhoyo ngoku) uncipha ukuvala i-zero, i-thyristor iyacima.

4. Xa i-thyristor yakho ithwala i-anode voltage eguqulwayo, nokuba yeyiphi na i-voltage esangweni, i-thyristor ikwimeko yokubhloka eguqukayo.

Kwiziko eliphakathi lesithando somlilo esiphakathi, ixesha lokuvala elicwangcisiweyo liphakathi kwee-microsecond ze-KP-60, kwaye icala le-inverter lizivale ixesha elifutshane ngaphakathi kwee-microsecond ze-KK-30. Lo ngumahluko ophambili phakathi kwemibhobho ye-KP kunye ne-KK. I-Thyristor T yi-anode yayo ngexesha lokusebenza. A kunye ne-cathode K zidityaniswe kunikezelo lwamandla kunye nomthwalo ukwenza isekethe ephambili ye-thyristor. Isango G kunye ne-cathode K ye-thyristor inxibelelene nesixhobo sokulawula i-thyristor ukwenza ulawulo lwesekethe ye-thyristor.

Ukusuka kuhlalutyo lwangaphakathi lwenkqubo yokusebenza kwe-thyristor: I-thyristor sisixhobo esinee-terminal ezintathu ezinomaleko. Inemida emithathu yePN, iJ1, J2, kunye neJ3. Umzobo 1. I-NP embindini yahlulwe yangamacandelo amabini ukwenza i-PNP-uhlobo lwe-transistor kunye ne-NPN-uhlobo transistor. Umzobo 2 Xa i-thyristor yakho ithwala i-anode voltage efanelekileyo, ukwenzela ukuba i-thyristor iqhube ubhedu, i-PN junction J2 ethwala umbane obuyela umva kufuneka ilahlekelwe sisiphumo sayo sokuvimba. Umqokeleli wangoku we-transistor nganye kulo mzobo ikwangumbindi wesiseko somnye ogqithisileyo.

Ke ngoko, xa kukho isango elaneleyo le-Ig yangoku yokuhamba kwimijikelezo emibini yeetransistor edityanisiweyo enye nenye, kuya kwenziwa ingxelo eyomeleleyo eyakhayo, ebangela ukuba ezi transistors zimbini zigcwaliswe kwaye ziqhutywa, kwaye iitransistors zigcwele kwaye ziqhutywa. Masithi umqokeleli wangoku wombhobho wePNP kunye netyhubhu ye-NPN iyahambelana ne-Ic1 kunye ne-Ic2; I-emitter yangoku ihambelana ne-Ia kunye ne-Ik; amandla okwandisa okwangoku ahambelana no-a1 = Ic1 / Ia kunye a2 = Ic2 / Ik, kunye nenqanaba eliphindayo elihamba ngokudibana kwe-J2 isithuba sokuvuza ngoku yi-Ic0, kunye ne-anode yangoku ye-thyristor ilingana nesixa somqokeleli wangoku kunye nokuvuza okukhoyo kwezi tyhubhu zimbini: : I = (Ic1 Iga2) / (0- (a1 a2)) (0-0) I-coefficients ehambelana ngoku yokukhulisa i-a2 kunye ne-a1 yetyhubhu ye-silicon PNP kunye ne-silicon NPN ityhubhu iyalingana nommiselo wangoku Utshintsho kunye notshintsho olubukhali zibonisiwe kuMzobo 1.

Xa i-thyristor yakho iphantsi kwamandla ombane anode kwaye isango alikho kumandla ombane, kwifomula (1-1), Ig = 0, (a1 a2) incinci kakhulu, ngenxa yoko i-anode yangoku ye-thyristor Ia≈Ic0 kunye I-thyristor yakho ivaliwe kwindawo efanelekileyo. Xa i-thyristor ikwi-anode voltage elungileyo, i-Ig yangoku ibaleka isuka kwisango G. Ukusukela oko i-Ig enkulu ngokwaneleyo ibaleka ngokudibana kwethyubhu ye-NPN, into yokuqala eyandisiweyo yokukhulisa i-a2 inyukile, kwaye i-Ic2 enkulu eyaneleyo ye-electrode yangoku ihamba ityhubhu yePNP. Ikwonyusa okwangoku into yokunyusa i-a1 yetyhubhu ye-PNP, kwaye ivelise i-Ic1 enkulu ye-elektroni yangoku ehamba ngakwindlela yokudibana ye-NPN ityhubhu.

Inkqubo eqinisekileyo yokunika ingxelo iqhubeka ngokukhawuleza.

Xa i-a1 kunye ne-a2 inyuka nge-emitter yangoku kunye (a1 a2) ≈ 1, idinomineyitha 1- (a1 a2) ≈ 0 kwifomula (1-1), ngaloo ndlela inyusa i-anode yangoku ye-Ia ye-thyristor. Ngeli xesha, iqukuqela ngoku I-thyristor igqitywe ngokupheleleyo ngumbane wesekethe ephambili kunye nokumelana kwesekethe. I-thyristor yakho sele ikwisimo sokuqhubela phambili. Kwifomula (1-1), emva kokuba i-thyristor ivuliwe, 1- (a1 a2) -0, nokuba isango langoku Ig = 0 ngeli xesha, i-thyristor isenokugcina i-anode yoqobo ye-Ia yangoku kwaye iqhubeke nokuqhuba .

Emva kokuba i-thyristor ivuliwe, isango liphulukene nomsebenzi walo. Emva kokuba i-thyristor ivuliwe, ukuba umbane wombane uhlala uncitshisiwe okanye ukunyuka kwe-loop kuyonyuswa ukunciphisa i-anode yangoku ye-Ia ukuya ezantsi kulondolozo lwangoku IH, kuba i-a1 kunye ne-a1 yehla ngokukhawuleza, xa 1- (a1 a2) ≈ 0 , I-thyristor ibuyela kwimeko yokuvimba.