Umsebenzi oyinhloko we-optocoupler kusekethe yokunikezwa kwamandla ukuqaphela ukuhlukaniswa ngenkathi kuguqulwa i-photoelectric nokugwema ukuphazamiseka okuhambisanayo. Umsebenzi we-disconnector uvelele kakhulu kusekethe.
Isignali ihamba iye ohlangothini olulodwa. Ukufaka nokukhipha kuhlukaniswe ngokuphelele ngogesi. Isignali yokukhipha ayinawo umthelela kokufakwayo. Amandla aqinile okulwa nokuphazamiseka, ukusebenza okuzinzile, ukungathintani, impilo yesevisi ende kanye nokusebenza kahle kokudlulisa. I-Optocoupler iyidivayisi entsha eyasungulwa ngawo-1970. Njengamanje, isetshenziswa kabanzi ekufakweni kukagesi, ukuguqulwa kwezinga, ukuxhumanisa phakathi kwesiteji, isekethe yokushayela, isekethe yokushintsha, i-chopper, i-multivibrator, ukuhlukaniswa kwesignali, ukuhlukaniswa phakathi kwesiteji, isekethe yokukhulisa i-pulse, insimbi yedijithali, ukudluliswa kwesignali yebanga elide, i-pulse amplifier, idivayisi yesimo esiqinile, i-state relay (SSR), insimbi, imishini yokuxhumana kanye ne-interface ye-microcomputer. Ekunikezelweni kwamandla okushintsha kwe-monolithic, i-optocoupler eqondile isetshenziselwa ukwakha isekethe yokuphendula ye-optocoupler, futhi umjikelezo womsebenzi ushintshwa ngokulungisa ugesi we-terminal yokulawula ukuze kufezwe injongo yokulawulwa kwe-voltage okunembile.
Umsebenzi oyinhloko we-optocoupler ekushintsheni ugesi ukuhlukanisa, ukunikeza isignali yempendulo kanye nokushintsha. Ukunikezwa kwamandla kwe-optocoupler kusekethe yokunikezela amandla okushintsha kunikezwa yi-voltage yesibili ye-transformer enemvamisa ephezulu. Uma i-voltage yokukhipha iphansi kune-voltage ye-zener, vula i-optocoupler yesignali bese wandisa umjikelezo womsebenzi ukuze wandise i-voltage yokukhipha. Ngokuphambene nalokho, ukuvala i-optocoupler kuzonciphisa umjikelezo womsebenzi futhi kunciphise i-voltage yokukhipha. Lapho umthwalo wesibili we-transformer enemvamisa ephezulu ugcwele ngokweqile noma isekethe yokushintsha yehluleka, akukho ukunikezwa kwamandla kwe-optocoupler, futhi i-optocoupler ilawula isekethe yokushintsha ukuthi ingadlidlizi, ukuze ivikele ishubhu yokushintsha ekushisweni. I-Optocoupler ivame ukusetshenziswa ne-TL431. Ama-resistor amabili athathwa amasampula ngokulandelana ku-terminal ye-431r ukuze aqhathaniswe ne-comparator yangaphakathi. Ngemuva kwalokho, ngokusho kwesignali yokuqhathanisa, ukumelana komhlabathi kokuphela okungu-431k (ukuphela lapho i-anode ixhunywe khona ne-optocoupler) kulawulwa, bese kulawulwa ukukhanya kwe-diode ekhipha ukukhanya ku-optocoupler. (kukhona ama-diode akhipha ukukhanya kolunye uhlangothi lwe-optocoupler kanye nama-phototransistors kolunye uhlangothi) ubukhali bokukhanya okudlulayo. Lawula ukumelana ekugcineni kwe-CE kwe-transistor kolunye uhlangothi, shintsha i-chip ye-LED power drive, bese ulungisa ngokuzenzakalelayo umjikelezo womsebenzi wesignali yokukhipha ukuze ufeze injongo yokuzinza kwe-voltage.
Uma izinga lokushisa elizungezile lishintsha kakhulu, ukukhukhuleka kwezinga lokushisa kwe-amplification factor kukhulu, okungafanele kuqashelwe yi-optocoupler. Isekethe ye-Optocoupler iyingxenye ebaluleke kakhulu yokushintsha isekethe yokunikezwa kwamandla.
Isikhathi sokuthunyelwe: Meyi-03-2022