Luminous Diode Technical Ipharamitha Incazelo

I-diode ekhipha ukukhanya edumile yehlela ku-1.6V-2.1V, kanye nezici zamanje ezisebenzayo ze-5-20mA LED 1. Incazelo yepharamitha yomkhawulo (1) Isithembiso sokusetshenziswa kwamandla PM: thembisa ukwengeza amakhanda amabili e-LED ku-DC voltage voltage Inani lasebusuku elidala kakhulu eligeleza kuwo. Yeqa leli nani, imfiva ye-LED nokubhujiswa. (2) Positive DC yamanje IFM: Idathabst yamanje ebaluleke kakhulu ethenjisiwe. Leli nani lingacekela phansi i-diode. (3) I-voltage ehlehlayo i-VRM: I-voltage endala kakhulu ehlehlayo ethenjiswe ukuthi izokwengezwa. Ngaleli nani, i-diode ekhipha ukukhanya ingase yephulwe futhi ichithwe. (4) I-TOPM: Isilinganiso sezinga lokushisa se-light-emitting diode singasebenza ngokujwayelekile. Ngaphansi noma ngaphezulu kwaleli zinga lokushisa, i-diode ekhipha ukukhanya ngeke isebenze kahle, futhi umphumela wenqatshiwe. 2. Ukubaluleka kwamapharamitha kagesi (1) Ukusebenza okuhle kwamandla IF: Kubhekisela enanini lamanje eliphozithivu lokukhazimula okuvamile kwe-diode lapho i-diode ekhazimulayo. Ekusetshenzisweni kwangempela, kufanele ukhethe uma udinga ukukhetha uma udinga ·Ngezansi ifm. (2) I-voltage esebenza kahle i-VF: I-voltage esebenzayo enikezwe kuthebula lepharamitha itholakala ngaphansi komsinga onikeziwe oya phambili. Ngokuvamile kukalwa uma IF = 20mA. I-diode ekhanyayo iku-voltage yokusebenza VF ku-1.4 3V. Lapho izinga lokushisa langaphandle likhuphuka, i-VF izokwehla. (3) Isici se-V-I: Uma ubudlelwano phakathi kwe-voltage kanye neyamanje ye-diode ekhipha ukukhanya bungaphansi kwevelu ethile (ebizwa ngokuthi i-threshold), i-current incane kakhulu futhi ayikhiphi ukukhanya. Lapho i-voltage ifinyelela inani elithile, i-current yangaphambili iyashesha nge-voltage futhi iyakhazimula. Ungayikhipha kanjani i-I can ukususa i-voltage eqondile ye-tube yokukhanya, i-current reverse kanye ne-voltage ehlanekezayo yepayipi yokukhanya kusukela ekususeni ubuhlalu besibani se-V-LED. Ipayipi elikhanyayo elihle elibuyisela emuva ukuvuza kwe-IR yamanje