Kodi Voltage ya Mphamvu ya LED ndi Mayendedwe Ake Oyambira Oyendetsa Ndi Chiyani?

Mphamvu yamagetsi yamagetsi ya LED ili ndi mitundu itatu yofunika: mabatire otsika-voltage, ma cell a solar, ndi magetsi amsika olumikizirana. Ziribe kanthu kuti magetsi oyambirira amavomerezedwa, chofunika kuti kusintha kwa magetsi kukhutitsidwe ndi LED. Mtundu woterewu wosinthira mphamvu nthawi zambiri umatanthawuza dera lagalimoto la LED. Mu dongosolo lamagetsi a dzuwa la LED, mabatire kapena ma ultra -supercapacitor amafunikira kuti asunge mphamvu ya dzuwa. Mukayatsa usiku, mabatire kapena ma supercapacitor amatulutsidwa kudzera munjira yoyang'anira dera kuti apereke mphamvu yamagetsi a LED. Mgwirizano wa mphamvu ya dzuwa ndi mphamvu yamphepo ndi LED ndiye chiwonetsero cha chaka chimodzi cha LED. Idzabweretsa kuwala ku umphawi ndi madera akutali a dziko lachitatu, ndikulola kuwala kobiriwira kobiriwira kuunikire mbali zonse za dziko lapansi. Magetsi a LED ndi mapangidwe awo oyambira oyendetsa 1. LFD driver circuit yokhala ndi magetsi otsika a DC 1. Pamene athandizira voteji ndi apamwamba kuposa voteji LED, pamene athandizira voteji ndi apamwamba kuposa voteji wa LED kapena chingwe LED Antihypertensive regulator. (1) Linear regulator linear regulator ndi DC-DC antihypertensive converter. Ambiri mwa owongolera omwe amavomerezedwa ndi ma LED drive circuit ndi otsika -voltage differential regulators (LDO). Mphamvu ndizoti palibe chifukwa cha zigawo za inductance, chiwerengero cha zigawo zofunikira ndizochepa, kusabereka kwa EMI kumachitika, ndipo kutsika kwake kwamagetsi kumakhala kochepa kuposa mphamvu yochepetsera mphamvu kuposa mphamvu. Komabe, poyerekeza ndi chowongolera chosinthira -mtundu, kutayika kwamphamvu kwa LDO kukadali kwakale, ndipo mphamvu yake ndiyotsika. LDO ikayendetsa 350mA kapena pamwamba pa chingwe cha LED champhamvu, imayenera kuwonjezeredwa ndi radiator. (2) The switch -voltage voteji (buck) stabilizer zachokera lophimba -mtundu antihypertensive regulator wa single -chip -enieni IC. Ma frequency ambiri a antihypertensive regulator ndi opitilira 1MHz, zomwe zimapangitsa zigawo zakunja kukhala zazing'ono kwambiri. Zomwe zimapangidwira ndizochepa kwambiri, zogwira ntchito zoposa 90%. Komabe, mtundu uwu wa converter udzabala phokoso losintha, ndipo pali vuto la EMI. Chithunzi 1 chikuwonetsa 3WLED boost drive circuit yochokera ku Zetex ZXSC300. RCS apa ndiye kukana kumvera kwamagetsi. Pansi pa voliyumu yowonjezera ya 6V, ma LED apano akufikira 1.11A.ZXSC300 kuti avomereze ma 5 pini SOT23 ma CD. Magetsi a LED komanso kapangidwe kake koyambira kayendetsedwe kake kamakhala ndi zosintha zambiri za antihypertensive single -chip ICs zosinthira MOSFET (Q1) ndi antihypertensive diode (D1). 2. Mphamvu yolowera ikakhala yotsika kuposa ma voliyumu a LED, mphamvu yolowera ikakhala yotsika kuposa mphamvu yamagetsi yamtundu wa LED kapena chingwe cha LED, nyali ya LED imayenera kukulitsa dera loyendetsa voteji. Pali mitundu iwiri ya chilimbikitso Converter mu zotsatirazi mitundu iwiri. (1) Direct pressure converter Mu kuyatsa kuphwanya kwa foni yam'manja, magetsi oyendetsa magetsi a LED amagwiritsidwa ntchito nthawi zambiri. Chosinthira -mtundu wa inductance boost converter chimagwiritsidwa ntchito ngati chingwe cha LED chamtundu umodzi kapena zingapo za LED, ndipo mawonekedwe a LED aliwonse ndi ofanana. Ngati pali msewu wa LED mu chingwe cha LED, ma LED ena amatuluka. Chithunzi 2 chikuwonetsa ma inductive voltage LED drive circuit. Chingwe cha LED chimapangidwa ndi nyali zoyera za NSPW500BS Nyali zowongolera za mtundu wa NSPW500BS wa 8 Japan Asia Chemical Corporation. Pansi pa voteji ya 4V, magetsi amtundu uliwonse amakhala pafupifupi 25mA pa LED. Mphamvu yamagetsi ya LED ndi kapangidwe kake koyambira kayendetsedwe kagalimoto kamathandizira kwambiri IC yowongolera, ndipo chubu chosinthira chimaphatikizidwa mu chip. (2) The switch capacitor (charge pump) boost converter switch capacitor voltage converter, ndiko kuti, pampu yopangira. IC yapadera ya pampu yolipiritsa ili ndi chosinthira chomangidwa, chomwe chimalumikizidwa ndi 1 kapena ziwiri 1 μF's charger capacitor. Pali 1 ×, 1.5 ×2 ×M'zaka zaposachedwa, zawonetsa 1.33 ×(nthawi 4/3) ndi 4 ×chitsanzo. Pamene voteji linanena bungwe ali pafupi ndi voteji athandizira, pampu mlandu sayenera kuonjezera voteji, ndiko, pa 1 ×Chitsanzo. Pamene kuthamanga kuli kofunika, sinthani ku 1.5 ×Kapena zinthu zina. Dongosolo lopopera lamagetsi limatha kuyendetsa gulu la LED, kapena LED imodzi yokha.