Voltage ea Matla a LED le Potoloho ea eona ea Motheo ea Motheo ke Efe?

Motlakase oa mantlha oa phepelo ea motlakase oa LED o na le mefuta e meraro ea bohlokoa: libeteri tse tlase-tlase, lisele tsa letsatsi, le phepelo ea motlakase ea mebaraka ea puisano. Ho sa tsotelehe hore na phepelo ea motlakase ea mantlha e amoheloang, se hlokahalang bakeng sa phetoho ea matla e lokela ho khotsofatsoa ke LED. Mofuta ona oa potoloho ea phetoho ea matla ka kakaretso e bolela potoloho ea drive ea LED. Lenaneong la phepelo ea matla a letsatsi la LED, ho hlokahala libeteri kapa li-ultra -supercapacitor ho boloka matla a letsatsi. Ha ho khantša bosiu, libeteri kapa li-supercapacitor li lokolloa ka mokhoa oa ho laola potoloho ho matlafatsa potoloho ea LED. Kopano ea matla a letsatsi le matla a moea le LED ke khanya ea selemo e le 'ngoe ea LED. E tla tlisa leseli ho bofutsana le libakeng tse hōle tsa lefats'e la boraro, 'me mabone a botala a khanyang a khanyetse likhutlong tsohle tsa lefats'e. Phepelo ea motlakase ea LED le moralo oa bona oa mantlha oa potoloho ea ho khanna 1. Potoloho ea mokhanni oa LFD e nang le matla a tlase a matla a DC 1. Ha motlakase o kenang o phahame ho feta motlakase oa LED, ha motlakase o kenang o phahame ho feta motlakase oa LED kapa oa LED string Antihypertensive regulator. (1) Linear regulator linear regulator ke DC-DC antihypertensive converter. Boholo ba li-linear regulators tse amoheloang ke potoloho ea koloi ea LED ke li-low -voltage differential regulators (LDO). Matla ke hore ha ho na tlhoko ea likarolo tsa inductance, palo ea likarolo tse hlokahalang e nyane, EMI infertility e etsahala, 'me ho theoha ha eona ha motlakase ho tlase ho feta matla a ho theola matla ho feta matla. Leha ho le joalo, ha ho bapisoa le regulator ea mofuta oa switch, tahlehelo ea matla ea LDO e ntse e le ea khale, 'me katleho e tlase. Ha LDO e khanna 350mA kapa ka holimo ho matla a LED khoele, e hloka ho eketsoa ka radiator. (2) The switjha -voltage gagamalo (buck) stabilizer e thehiloe fapoha-mofuta antihypertensive regulator ea e le 'ngoe -chip -specific IC. Maqhubu a mangata a antihypertensive regulator a feta 1MHz, e leng se etsang hore likarolo tsa kantle li be nyane haholo. The entangle e nyane haholo, ka katleho e fetang 90%. Leha ho le joalo, mofuta ona oa converter o tla tsoala lerata la ho fetola, 'me ho na le bothata ba EMI. Setšoantšo sa 1 se bonts'a potoloho ea 3WLED boost drive e thehiloeng ho Zetex ZXSC300. RCS mona ke khanyetso ea ho utloa phetisetso ea motlakase. Tlas'a motlakase o kenang oa 6V, LED ea hona joale e fihla ho 1.11A.ZXSC300 ho amohela liphutheloana tsa 5 SOT23. Motlakase oa LED le moralo oa eona oa motheo oa potoloho ea ho khanna hajoale o na le li-transformer tse ngata tsa antihypertensive single -chip ICs ho switjha switch MOSFET (Q1) le antihypertensive diode (D1). 2. Ha motlakase o kenang o le tlase ho feta motlakase oa LED, ha motlakase o kenang o le tlase ho feta motlakase o motle oa motlakase oa LED kapa khoele ea LED, LED e hloka ho eketsa potoloho ea motlakase. Ho na le mefuta e 'meli ea li-booster converter mefuteng e' meli e latelang. (1) Mofetoleli oa khatello e tobileng Leboneng la tlolo ea molao ea mohala oa thekeng, hangata ho sebelisoa motlakase oa motlakase oa motlakase oa motlakase oa LED. The switch -type inductance boost converter e sebelisoa e le khoele ea LED ea sebopeho se le seng kapa tse ngata tsa LED, 'me hona joale ea LED ka' ngoe e lekana. Haeba ho na le tsela ea LED khoeleng ea LED, li-LED tse ling li tla tima. Setšoantšo sa 2 se bonts'a potoloho ea motlakase oa motlakase oa LED. Mohala oa LED o entsoe ka NSPW500BS lebone le lesoeu lebone le khantšitsoeng lebone la mofuta oa NSPW500BS oa 8 Japan Asia Chemical Corporation. Tlas'a motlakase oa 4V, motlakase oa LED ka 'ngoe o ka ba 25mA ka LED. Motlakase oa LED le moralo oa eona oa mantlha oa potoloho ea ho khanna hangata o matlafatsa IC ea taolo, 'me tube ea switching e kenyelelitsoe ka har'a chip. (2) The switch capacitor (charge pump) boost converter switjha capacitor voltage voltage converter, ke hore, pompo ea tefiso. IC e khethehileng ea pompo ea tefiso e na le sesebelisoa se hahiloeng, se kopantsoeng le 1 kapa tse peli 1 μF's tjhaja capacitor. Ho na le 1 ×, 1.5 ×2 ×Lilemong tsa morao tjena, e bontšitse 1.33 ×(4/3 linako) le 4 ×mohlala. Ha motlakase o hlahisoang o le haufi le motlakase oa ho kenya letsoho, pompo ea tefiso ha e hloke ho eketsa motlakase, ke hore, ho 1 ×Mohlala. Ha khatello e hlokahala, fetohela ho 1.5 ×Kapa lintho tse ling. Potoloho ea pompo ea tefiso e ka khanna sehlopha sa LED, kapa LED e le 'ngoe feela.