Lub rectifier diode yog cov khoom siv hluav taws xob tsim los hloov AC tam sim no rau hauv DC tam sim no. Qhov no yog xws li ob-electrode ntaus ntawv uas tsuas muaj ib sab (unipolar) hluav taws xob conductivity. Lub rectifier diode ua los ntawm cov khoom siv semiconductor thiab lub npe hu ua diode txuas hniav (thaum plaub diodes txuas nrog kab pheeb ces kaum hauv ib pob) hloov lub ignitron thiab lub tshuab nqus tsev diode.
Cov nyhuv ntawm rectifying alternating tam sim no thiab hloov nws mus rau tam sim no ncaj qha tshwm sim ntawm semiconductor-hlau, hlau-semiconductor hlws ris, los yog nyob rau hauv lub thiaj li hu ua electron-qhov hlws ris nyob rau hauv ib co muaju (piv txwv li, silicon, germanium, selenium, cuprous oxide). Xws li cov muaju feem ntau ua lub hauv paus ntawm lub cuab yeej.
Ib lub semiconductor rectifier diode yog siv hauv xov tooj cua engineering, hauv cov khoom siv hluav taws xob thiab hluav taws xob. Nyob rau hauv qhov tseeb, rectification yog transformation ntawm tam sim no alternating (voltage) rau hauv ib qho tam sim no ntawm ib polarity (pulsating ncaj qha). Hom kev hloov kho tshiab hauv thev naus laus zis no yog qhov tsim nyog rau kev qhib thiab kaw cov hluav taws xob hluav taws xob, hloov thiab tshawb xyuas cov teeb liab hluav taws xob thiab impulses, thiab rau ntau lwm yam kev hloov pauv zoo sib xws. Xws li cov yam ntxwv ntawm lub diode raws li ceev, stability ntawm tsis, capacitance ntawm p-n junctions tsis xav tau tej yam tshwj xeeb.
Cov cuab yeej no muaj qee yam hluav taws xob tsis zoo thiab cov yam ntxwv ntawm diode:
- rau pem hauv ntej voltage ntawm tus nqi tam sim no (tus nqi nruab nrab yog coj);
- rov qab tam sim no ntawm tus nqi ntawm qhov rov qab voltage thiab kub (tus nqi nruab nrab);
- ncov tso cai qhov tseem ceeb rau qhov siab tshaj qhov rov qab voltage;
- tus nqi nruab nrab ntawm qhov tam sim no;
- tus nqi zaus yam tsis muaj kev txo qis;
- resistance.
Ib lub diode rectifier feem ntau yog luv ua ib lub rectifier xwb. Raws li ib feem ntawm cov hluav taws xob hluav taws xob, nws muaj kev tiv thaiv siab rau tam sim no ntws nyob rau hauv ib qho kev taw qhia thiab tsis tshua muaj kev tiv thaiv rau tam sim no ntws nyob rau hauv qhov opposite direction. Qhov no ua rau tam sim no raug kho.
Ib lub cuab yeej xws li lub tshuab hluav taws xob diode muaj qhov sib txawv me me. Kev khiav hauj lwm zaus rau kev lag luam siv cov cuab yeej no thaum hloov AC rau DC yog 50 Hz. Qhov txwv tsis pub dhau yog suav tias yog tsis pub tshaj 20 kHz.
Lub rectifier diode raws li cov khoom siv hluav taws xob tuaj yeem muab faib ua ob peb pawg raws li tus nqi ntawm qhov siab tshaj plaws nruab nrab rau pem hauv ntej tam sim no. Qhov no yog lub zog hluav taws xob tsawg (txog 0.3 amps), lub zog nruab nrab (ntawm 0.3 A txog 10 A) thiab lub luag haujlwm hnyav (lub zog) rectifier diodes (ntau tshaj kaum amps).
Qhov tsis tseem ceeb ntawm cov khoom siv hluav taws xob zoo li lub diode rectifier, nws yog ib qho tsim nyog yuav tsum suav nrog kev khiav hauj lwm ntau rau qhov kub thiab txias (feem ntau nws nyob ntawm -50 txog +130 degrees Celsius rau hom diode feem ntau - silicon) thiab qhov kub siab tshaj plaws (ntau yam tsis muaj, nyob ntawm lub zog, lub hom phiaj thiab chaw tsim khoom).
