Diode Txoj Cai Ua Haujlwm (Kev coj mus rau pem hauv ntej, thim rov qab tsis yog-Conductivity)
Crystal diode yog ap-n kev sib tshuam tsim los ntawm p-hom thiab n- hom semiconductors. Ib qho chaw them nqi txheej txheej ntawm ob sab ntawm lub interface, thiab tsim ua - hauv hluav taws xob teb. Thaum tsis muaj kev siv hluav taws xob sab nraud, qhov sib txawv tam sim no tshwm sim los ntawm cov cab kuj sib txawv ntawm p-n hlws ris thiab qhov hluav taws xob tam sim no tshwm sim los ntawm kev tsim- hauv hluav taws xob sib npaug, ua rau muaj hluav taws xob sib npaug. Thaum siv qhov kev tsis ncaj ncees rau pem hauv ntej, qhov kev sib nrig sib tshem tawm ntawm sab nraud hluav taws xob thiab cov ua tau - nyob rau hauv hluav taws xob teb ua rau kom qhov sib txawv ntawm cov cab kuj, ua rau tam sim no rau pem hauv ntej (yog vim li cas rau conductivity). Thaum siv qhov rov qab tsis ncaj ncees lawm, qhov hluav taws xob sab nraud thiab qhov tsim tau- nyob rau hauv hluav taws xob teb tau ntxiv dag zog ntxiv, ua rau qhov rov qab saturation tam sim no I0 uas tsis muaj kev ywj pheej ntawm tus nqi hluav taws xob rov qab nyob rau hauv ib qho kev rov qab voltage ntau (qhov no yog vim li cas nws tsis yog -conductive).
Thaum cov ntaub ntawv rov qab voltage siab txaus, lub zog hluav taws xob nyob rau hauv p-n hlws ris qhov chaw them nqi mus txog tus nqi tseem ceeb, ua rau cov txheej txheem sib npaug, tsim cov khoom siv hluav taws xob ntau - lub qhov khub, thiab ua rau qhov rov qab tawg loj heev tam sim no, hu ua diode tawg.
