Amacandelo aphambili eizikrini ze-LED zangaphakathikwayeiziboniso ze-LED zangaphandle zii-LEDs kunye neetshiphusi zomqhubi, ezizezengqokelela yeemveliso ze-microelectronic. Umbane osebenzayo we-LEDs malunga ne-5V, kwaye umbane osebenzayo jikelele ungaphantsi kwe-20 mA. Iimpawu zayo zokusebenza zimisela ukuba isesichengeni sombane ongatshintshiyo kunye nombane ongaqhelekanga okanye izothuso zangoku. Ngoko ke, abavelisi be-LED kufuneka bathathe amanyathelo okukhusela umboniso we-LED ngexesha lokuvelisa kunye nokusetyenziswa. Isiseko sombane yeyona ndlela ixhaphakileyo yokukhusela kwimiboniso eyahlukeneyo ye-LED.
Kutheni kufuneka kumiswe umbane? Oku kuhambelana nendlela yokusebenza yokunikezelwa kwamandla okutshintsha. Umboniso wethu we-LED wokutshintsha unikezelo lwamandla sisixhobo esiguqula ii-AC 220V eziphambili zibe yimveliso ezinzileyo ye-DC 5V DC yamandla ngothotho lweendlela ezinjengokucoca-ukulungiswa-i-pulse modulation-output rectification-filtering.
Ukuqinisekisa ukuzinza kwe-AC/DC yokuguqulwa kombane, umenzi wombane udibanisa isekethe yokucoca i-EMI ukusuka kucingo oluphilayo ukuya kucingo olusemhlabeni kuyilo lwesekethe ye-AC 220V ye-terminal yokufaka ngokwe-3C mandatory yesizwe. umgangatho. Ukuze kuqinisekiswe ukuzinza kwegalelo le-AC 220V, zonke izixhobo zombane ziya kuba nokuvuza kokucoca ngexesha lokusebenza, kwaye ukuvuza kwangoku kombane omnye malunga ne-3.5mA. Umbane wokuvuza malunga ne-110V.
Xa isikrini sokubonisa i-LED singasekelwanga, ukuvuza kwangoku kunokubangela umonakalo wetshiphu okanye ukutshiswa kwesibane. Ukuba kusetyenziswe amandla angaphezu kwama-20, ukuvuza kwangoku okuqokelelweyo kufikelela ngaphezulu kwe-70mA. Kwanele ukwenza ukuba umkhuseli wokuvuza asebenze kwaye anqumle ukunikezelwa kwamandla. Esi sisizathu sokuba kutheni isikrini sethu sokubonisa singakwazi ukusebenzisa umkhuseli wokuvuza.
Ukuba umkhuseli wokuvuza akaxhunyiwe kwaye isikrini sokubonisa i-LED asisekelwanga, ukuvuza kwangoku okugqithiswe ngumbane kuya kudlula umbane okhuselekileyo womzimba womntu, kwaye i-voltage ye-110V yanele ukubangela ukufa! Emva kokumiswa, i-voltage yeqokobhe lombane isondele kwi-0 kumzimba womntu. Ibonisa ukuba akukho mahluko unokubakho phakathi konikezelo lwamandla kunye nomzimba womntu, kwaye ukuvuza kwangoku kukhokelela emhlabeni. Ngoko ke, umboniso we-LED kufuneka usekelwe.
Ke, kufuneka kujongeke njani umgangatho osezantsi? Kukho iitheminali ezi-3 ekupheleni kokufakwa kombane, ezizezi itheminali yocingo oluphilayo, itheminali yocingo engathathi ntweni kunye netheminali yasemhlabeni. Indlela echanekileyo yokumisa kukusebenzisa ucingo olukhethekileyo olutyheli-luhlaza olunemibala emibini ukumisa ukudibanisa zonke iitheminali zomhlaba zamandla ngothotho kwaye zitshixe, kwaye emva koko uzikhokelele ngaphandle kwitheminali ephantsi.
Xa siphantsi komhlaba, ukuchasana komhlaba kufuneka kube ngaphantsi kwe-4 ohms ukuqinisekisa ukukhutshwa ngexesha lokuvuza kwangoku. Kufuneka kuqatshelwe ukuba xa i-terminal yokukhusela i-grounding grounding ikhupha umbane wangoku, kuthatha ixesha elithile ngenxa yokusabalalisa kwamandla omhlaba, kwaye amandla omhlaba aya kuvuka ngexesha elifutshane. Ukuba isiseko sesikrini se-LED siqhagamshelwe kwi-terminal yokukhusela umbane, ngoko umhlaba onamandla Uphezulu kunesikrini sokubonisa, umbane wombane uya kuthunyelwa kumzimba wesikrini kunye nocingo lomhlaba, obangela umonakalo wesixhobo. Ngoko ke, ukhuseleko olukhuselayo lwesiboniso se-LED aluyi kudibaniswa kwi-terminal yokukhusela umbane, kwaye i-terminal ekhuselayo yokukhusela kufuneka ibe ngaphezu kweemitha ezingama-20 ukusuka kwindawo yokukhusela umbane. Thintela uhlaselo olunokubakho emhlabeni.
Isishwankathelo seengqwalasela zesiseko se-LED:
1. Umbane ngamnye kufuneka usekelwe kwi-terminal ephantsi kwaye utshixe.
2. Ukumelana nomgangatho akuyi kuba mkhulu kune-4Ω.
3. Intambo yomhlaba kufuneka ibe yintambo ekhethekileyo, kwaye inqatshelwe ngokungqongqo ukudibanisa nocingo olungathathi hlangothi.
4. Akukho siqhekeza somoya okanye i-fuse eya kufakwa kucingo oluphantsi.
5. Ucingo olusezantsi kunye netheminali yomhlaba kufuneka ibe ngaphezu kwama-20 ukusuka kwindawo yokukhusela umbane.
Akuvumelekanga ngokungqongqo ukuba ezinye izixhobo zisebenzise isiseko sokukhusela endaweni ye-zero yokukhusela, okukhokelela ekudibaneni okuxubileyo kwesiseko sokukhusela kunye ne-zero yokukhusela. Xa i-insulation yesixhobo somhlaba esikhuselayo sonakaliswe kwaye umgca wesigaba uthinta igobolondo, umgca ongathathi hlangothi uya kuba ne-voltage emhlabeni, ukwenzela ukuba i-voltage eyingozi iya kuveliswa kwigobolondo yesixhobo sokukhusela umhlaba.
Ngoko ke, kumgca onikwe amandla ngebhasi enye, isiseko sokukhusela kunye nokukhusela i-zero uxhumano alukwazi ukuxutywa, oko kukuthi, enye inxalenye yezixhobo zombane ayinakuxhunywa kwi-zero kwaye enye inxalenye yezixhobo zombane zisekelwe. Ngokuqhelekileyo, i-mains iqhagamshelwe ekukhuselweni kwe-zero, ngoko ke izixhobo zombane ezisebenzisayo kufuneka ziqhagamshelwe kukhuseleko lwe-zero.
Ixesha lokuposa: Jul-11-2022
