Kuki LED Yerekana igomba gushingirwaho?

Ibice nyamukuru bigizeLED LEDnahanze LED yerekana ni LED hamwe na chip ya shoferi, biri mubikusanyirizo byibicuruzwa bya elegitoroniki. Umuvuduko wamashanyarazi wa LED ni nka 5V, naho ibikorwa rusange biri munsi ya 20 mA. Ibiranga akazi byerekana ko ishobora kwibasirwa cyane n'amashanyarazi ahamye hamwe na voltage idasanzwe cyangwa ihungabana ryubu. Kubwibyo, LED yerekana ibicuruzwa igomba gufata ingamba zo kurinda LED yerekanwe mugihe cyo kuyikoresha no kuyikoresha. Imbaraga zubutaka nuburyo bukoreshwa cyane bwo kurinda ibintu bitandukanye bya LED.

Kuki amashanyarazi agomba gushingirwaho? Ibi bifitanye isano nuburyo bwakazi bwo guhinduranya amashanyarazi. LED yerekana guhinduranya amashanyarazi ni igikoresho gihindura imiyoboro ya AC 220V mumasoko atajegajega ya DC 5V DC binyuze murukurikirane rwuburyo nko gushungura-gukosora-pulse modulation-ibisohoka gukosora-gushungura.

Kugirango habeho ituze rya AC / DC ihindagurika ryumuriro w'amashanyarazi, uruganda rutanga amashanyarazi ruhuza umuzunguruko wa EMI uva mu nsinga nzima ukageza ku nsinga z'ubutaka mu gishushanyo mbonera cy’umuriro wa AC 220V ukurikije itegeko rya 3C ry’igihugu; bisanzwe. Kugirango hamenyekane neza ko AC 220V itajegajega, ibikoresho byose byamashanyarazi bizaba bifite akayunguruzo kameneka mugihe gikora, kandi amashanyarazi ava mumashanyarazi amwe agera kuri 3.5mA. Umuvuduko w'amazi ni 110V.

Mugihe ecran ya LED yerekanwe idafite ishingiro, imiyoboro yamenetse ntishobora gusa kwangiza chip cyangwa gucana itara. Niba ibikoresho birenga 20 bikoreshwa, amashanyarazi yegeranijwe agera kuri 70mA. Birahagije gutera uburinzi kumeneka gukora no guhagarika amashanyarazi. Ninimpamvu ituma ecran yacu yerekana idashobora gukoresha uburinzi.

Niba icyuma kirinda kumeneka kidahujwe kandi ecran ya LED ntigaragare, amashanyarazi ava hejuru yumuriro w'amashanyarazi azarenza umuyaga utekanye wumubiri wumuntu, kandi voltage ya 110V irahagije kugirango itere urupfu! Nyuma yo guhagarara, amashanyarazi ya shell voltage yegereye 0 kumubiri wumuntu. Irerekana ko nta tandukanyirizo rishobora kubaho hagati yumuriro wumubiri numubiri wumuntu, kandi umuyonga uva mubutaka. Kubwibyo, LED yerekana igomba kuba ishingiye.

None, ibisanzwe bisanzwe bigomba kumera bite? Hano haribintu 3 kuri enterineti yinjiza amashanyarazi, aribwo buryo bwa tereviziyo nzima, insinga zidafite aho zibogamiye hamwe nubutaka bwubutaka. Uburyo bwiza bwo guhanagura ni ugukoresha umugozi wihariye wumuhondo-icyatsi kibisi-amabara kugirango uhuze kugirango uhuze imbaraga zose zubutaka mukurikirane hanyuma ubifunge, hanyuma ubisohokane kubutaka.

Iyo duhagaritswe, guhangana nubutaka bigomba kuba munsi ya 4 oms kugirango tumenye neza ko imyanda isohoka mugihe. Twabibutsa ko mugihe itumanaho ririnda inkuba risohora inkuba, bifata igihe runaka kubera ikwirakwizwa ryubutaka, kandi ubushobozi bwubutaka buziyongera mugihe gito. Niba ihagarikwa rya ecran ya LED ihujwe no gukingira inkuba ikingira, noneho ubushobozi bwubutaka burenze hejuru yerekana ecran, imirabyo ikoherezwa mumubiri wa ecran kumurongo winsinga, bigatuma ibikoresho byangirika. Kubwibyo rero, uburyo bwo gukingira icyerekezo cya LED ntigishobora guhuzwa n’umuriro ukingira inkuba, kandi ikibanza cyo gukingira kirinda kigomba kuba kirenga metero 20 uvuye aho inkuba ikingira. Irinde ubutaka bushobora guhangana.

Inshamake y'ibitekerezo bya LED:

1. Buri mashanyarazi agomba guhagarikwa kuva hasi hanyuma agafungwa.

2. Kurwanya ubutaka ntibishobora kurenza 4Ω.

3. Umugozi wubutaka ugomba kuba insinga yihariye, kandi birabujijwe rwose guhuza insinga zidafite aho zibogamiye.

4. Nta cyuma cyangiza ikirere cyangwa fuse bigomba gushyirwa kumurongo wubutaka.

5. Umugozi wubutaka hamwe nubutaka bwubutaka bigomba kuba birenga 20 kure yubutaka bwo gukingira inkuba.

Birabujijwe rwose ko ibikoresho bimwe na bimwe bikoresha ubutaka bwo gukingira aho gukoresha zeru ikingira, bikavamo guhuza imvange yo gukingira no kurinda zeru. Iyo insulasiyo yikintu gikingira ikingira cyangiritse kandi umurongo wicyiciro ukoraho igikonoshwa, umurongo utabogamye uzaba ufite voltage hasi, kuburyo voltage ishobora guteza akaga mugikonoshwa cyibikoresho bikingira.

Kubwibyo, kumurongo ukoreshwa na bisi imwe, guhagarara kurinda no guhuza zeru kurinda ntibishobora kuvangwa, ni ukuvuga ko igice kimwe cyibikoresho byamashanyarazi kidashobora guhuzwa na zeru ikindi gice cyibikoresho byamashanyarazi gihagaze. Mubisanzwe, imiyoboro ihujwe no kurinda zeru, bityo ibikoresho byamashanyarazi ukoresheje imiyoboro bigomba guhuzwa no kurinda zeru.