YUANNENGJI Since LED chips have low power and low operating voltage, a large number of series and parallel connections must be used in the production of lamps to meet the power requirements. How to connect these chips is an issue we must take seriously. Otherwise, the service life of the lamp will be greatly shortened, resulting in the embarrassing situation of “saving energy but not saving money”.
As an electronic component, LED has a very special side, which is nonlinearity. Simply put, as long as the voltage applied to the LED changes a little, it will cause a large change in the chip current. If not handled properly, it will seriously affect the life of the LED. Punika kaluwihan lan cacat saka macem-macem cara sambungan Kripik LED:
1. Sambungan seri
Sambungan seri minangka cara sambungan sing paling wajar kanggo chip LED
Fitur dhasar saka sirkuit seri iku saiki ing kabeh Kripik LED padha, dadi prabédan daya antarane saben chip padha karo prabédan voltase sing, lan ora bakal luwih dhuwur tinimbang iku. Mulane, cara sambungan seri wis toleransi kuwat kanggo inconsistency saka Kripik LED.
Mung kerugian saka sirkuit seri iku yen chip mbukak, lampu kabeh utawa kabeh senar lampu ora bakal murup, lan short circuit wis Sejatine ora efek. Nanging, proporsi sirkuit mbukak ing gagal chip luwih murah tinimbang sirkuit cendhak. Mulane, tingkat Gagal sakabèhé saka sirkuit seri banget kurang.
Yen sampeyan pengin dadi foolproof, sampeyan bisa nyambungake regulator voltase 4v ~ 5v ing podo karo kanggo saben chip kanggo nyedhiyani path nalika chip mbukak, nanging biaya bakal rada luwih. Nanging, iku worth iku kanggo sawetara kesempatan khusus karo syarat dhuwur.
2. Sambungan paralel
sambungan podo iku salah siji saka cara sambungan paling boten mesthi kanggo Kripik LED, sing bakal nggedhekake akibat saka inconsistency LED lan nyebabake karusakan durung wayahe kanggo lampu. Yen sampeyan ora yakin apa sampeyan bisa tuku Kripik karo nilai vF banget konsisten, aja nganggo sambungan paralel.
Saiki njupuk chip 3.0ⅴ lan 3.6ⅴ minangka conto. Nilai vF rata-rata sawise sambungan paralel bakal luwih dhuwur tinimbang 3.0, nyebabake arus gedhe saka 3.0ⅴ LED. Minangka suhu mundhak, vF bakal luwih suda lan konsumsi daya bakal terus nambah. siklus ganas kuwi bakal nemen shorten urip Kripik Nilai vF kurang ing grup podo.
Yen chip iki wis fault short circuit, kabeh klompok Kripik ora bakal padhang. Yen arus output sumber daya gedhe, bakal cepet ngobong chip iki menyang short circuit, banjur mbagekake arus sing kudu dadi duweke kanggo wong liya, mangkono akselerasi kacepetan tuwa klompok Kripik iki.
3. Paralel pisanan, banjur sambungan seri
Paralel pisanan, banjur sambungan seri nggambarake kaluwihan saka sambungan seri, nanging ora bisa nyingkiri cacat sambungan paralel, dadi dudu cara sambungan sing paling apik. Nanging, this mode is most commonly used in fluorescent lamps. For example, 18w fluorescent lamps are basically 4 parallel and 24 series.
This connection method is based on the premise that once a chip is open, other chips can continue to light up. On the surface, it has little impact, but it will accelerate the damage rate of the remaining chips. Of course, if chips are purchased in large quantities, it is possible to classify the chips more finely and better ensure the consistency of the chips, which is also the basis for adopting this connection method.
4. Sambungan seri pisanan, banjur sambungan paralel
Serial connection first, then parallel connection absorbs the advantages of both methods and is a more reasonable LED connection method.
Especially for some small businesses in the form of home workshops, it is difficult to ensure the consistency of chips, supaya nyoba nganggo mode iki kanggo nggedhekake urip layanan saka lampu. Tiru-tiru wuta sing diarani sesambungan paralel dhisik, banjur mode sambungan seri saka pabrik gedhe ora bakal bisa.
Ing ndhuwur sedhela pirso kaluwihan lan cacat saka macem-macem seri chip LED lan mode sambungan podo. Ing pengalaman pribadi, nalika ngrancang piring dasar aluminium kanggo lampu, sambungan seri kudu diwenehi prioritas, banjur sambungan seri pisanan lan banjur sambungan paralel, lan sambungan podo pisanan lan banjur sambungan seri kudu nyingkiri okehe. Minangka kanggo mode kurang voltase kabeh sambungan podo, yen kahanan ngidini, paling apik nggunakake modul ngedongkrak DC-DC kanggo ngganti menyang sambungan seri.