Kukundikana kutatu kwakajairika kwemwenje yechiratidzo che LED nemhinduro

Dzimwe shamwari dzinobvunza zvikonzero zvakajairika uye nzira dzekurapa mwenje ye LED inopenya, uye vamwe vanhu vanoda kubvunza chikonzero nei mwenje ye LED isingabatidzi. Chii chiri kuitika? Kutaura zvazviri, kune zvikanganiso zvitatu zvakajairika uye mhinduro dzemwenje ye LED.

Kukundikana kutatu kwakajairika kwemwenje yechiratidzo che LED nemhinduro:

Chikanganiso chinowanzoitika ndechekukundikana kwekugadzirisa. Enda kuLight City utenge imwe woitsiva. LED yese haiwanzokuvadzwa.

Zviviri. Chiedza che LED chinopenya zvikonzero:

1. Mabhero emwenje nesimba rekutyaira re LED hazvienderane, mabhero emwenje e1W akajairika ane :280-300 ma current uye :3.0-3.4V voltage, kana chipu yemwenje isina simba rakakwana, inokonzera chiitiko chechiedza, kana magetsi akakura zvakanyanya, mabhero emwenje haazokwanisi kumira switch. Muzviitiko zvakakomba, waya dzegoridhe kana dzemhangura dziri mukati memabhero dzinogona kutsva, zvichiita kuti mabhero asashande.

2. Simba redhiraivha rinogona kunge rakakuvara, chero bedzi ukaritsiva nerimwe simba redhiraivha rakanaka, harizobwairi.

3. Kana mutyairi aine basa rekudzivirira kupisa kwakanyanya, mashandiro erambi rechiratidzo che LED haakwanise kusangana nezvinodiwa, uye dziviriro yemutyairi pakupisa kwakanyanya ichapenya kana yatanga kushanda. Semuenzaniso, imba yerambi re projection re 20 w rinoshandiswa kuunganidza marambi e 30W haiite basa rakanaka rekutonhodza.

4. Kana marambi ekunze ainewo zviratidzo zve stroboscopic, zvinoreva kuti marambi acho akazara nemvura. Nekuda kweizvozvo, kana akabwaira, haavhenekeri. Chiratidzo chemwenje nemutyairi zvakatyoka. Kana mutyairi akaita basa rakanaka rekudzivirira mvura, jira remwenje rinotyoka uye tsime remwenje rinogona kuchinjwa.

Nzira yechitatu yekugadzirisa mwenje wechiratidzo che LED:

1. Mukushandiswa kwemwenje ye LED ine simba shoma, simba rakajairika ndiro topology ye flyback yakaparadzana. Green Dot, 8W off-line LED driver, inosangana nezvinodiwa zve energy Star solid-state lighting. Mukugadzirwa kwayo, nekuti sinusoidal square wave power conversion ye flyback regulator haipe simba risingaperi kune primary bias, dynamic self-powered circuit inogona kushanda uye kukonzera kupenya kwechiedza. Kuti udzivise dambudziko iri, zvakakosha kuita primary off-set discharge muhafu yega yega ye cycle. Saka, zvakakosha kusarudza nemazvo capacitance uye resistance values ​​dze LED signal lamps dzinoumba circuit.

2. Kazhinji ziso remunhu rinogona kuona kupenya kwechiedza pa frequency ye 70 Hz, asi pamusoro pazvo harigone. Saka, mumashandisirwo emwenje ye LED, kana chiratidzo che pulse chine chikamu chema frequency akaderera chine frequency iri pasi pe 70 Hz, ziso remunhu richanzwa kupenya. Ehe, pane zvinhu zvakawanda zvinogona kukonzera kuti mwenje ye LED ibwaire mune imwe application.

3. Mafirita eEmi anodiwa kunyangwe mumashandisirwo emagetsi eLED anopa simba rakanaka rekugadzirisa uye anotsigira kudzikira kwemaswichi eSCR ane materminal maviri. Kuchinja kwemagetsi kunokonzerwa nedanho reswichi yeSCR ine madivi maviri kunofadza kurira kwechisikigo kwemainductor nemacapacitor ari mufiriji yeEmi.

Kana hunhu hwe resonance huchiita kuti input current ive yakaderera pane hold current ye three-terminal bi-directional SCR switch element, three-terminal bi-directional SCR switch element ichadzimwa. Mushure mekunonoka kwenguva pfupi, three-terminal bidirectional SCR switching element inowanzo vhura zvakare kuti iwedzere resonance imwechete. Izvi zviitiko zvinogona kudzokororwa kakawanda mukati mehafu ye cycle ye INPUT power waveform ye LED semaphore, zvichikonzera kupenya kwe LED kunooneka.