Pali mitundu yambiri ya magetsi a LED.Ubwino ndi mtengo wamagetsi osiyanasiyana amasiyana kwambiri.Ichinso ndi chimodzi mwazinthu zofunika zomwe zimakhudza mtundu wa malonda ndi mtengo wake.Magetsi a LED amatha kugawidwa m'magulu atatu, kusinthira gwero lanthawi zonse, magetsi amtundu wa IC, ndi kukana-kutsika kwamagetsi.
1. Chitsimikizo chosinthira nthawi zonse chimagwiritsa ntchito thiransifoma kuti isinthe voteji kuti ikhale yotsika, ndipo imapanga kukonzanso ndi kusefa kuti itulutse khola lotsika lamagetsi mwachindunji.Kusintha kosalekeza gwero lamakono lagawidwa kukhala magetsi akutali ndi magetsi osakhazikika.Kudzipatula kumatanthauza kudzipatula kwa linanena bungwe mkulu ndi otsika voteji, ndipo chitetezo ndi mkulu kwambiri, choncho chofunika kutchinjiriza kwa chipolopolo si mkulu.Chitetezo chosadzipatula chimakhala choipitsitsa pang'ono, koma mtengo wake ndi wotsika.Nyali zachikhalidwe zopulumutsa mphamvu zimagwiritsa ntchito magetsi osadzipatula ndipo amagwiritsa ntchito chipolopolo cha pulasitiki chotetezedwa kuti chitetezeke.Chitetezo cha magetsi osinthira ndi okwera kwambiri (nthawi zambiri zotulutsa zake zimakhala zotsika kwambiri), ndipo magwiridwe ake ndi okhazikika.Choyipa ndichakuti derali ndi lovuta komanso mtengo wake ndi wapamwamba.Mphamvu yosinthira imakhala ndi ukadaulo wokhwima komanso magwiridwe antchito okhazikika, ndipo pakadali pano ndiyomwe imathandizira pakuwunikira kwa LED.
2. Linear IC magetsi amagwiritsa ntchito IC imodzi kapena ma IC angapo kuti agawire magetsi.Pali mitundu yochepa ya zida zamagetsi, mphamvu zamagetsi ndi mphamvu zamagetsi ndizokwera kwambiri, palibe electrolytic capacitor yomwe ikufunika, moyo wautali komanso mtengo wotsika.Choyipa ndichakuti ma voliyumu okwera kwambiri amakhala osadzipatula, ndipo pali stroboscopic, ndipo mpanda umayenera kutetezedwa ku kugwedezeka kwamagetsi.Onse amagwiritsa ntchito magetsi amtundu wa IC pamsika amati palibe ma electrolytic capacitor komanso moyo wautali.Magetsi a IC ali ndi kudalirika kwakukulu, kuchita bwino kwambiri komanso zabwino zotsika mtengo, ndipo ndi magetsi abwino a LED mtsogolomo.
3. Mphamvu yamagetsi ya RC yotsika pansi imagwiritsa ntchito capacitor kuti ipereke kuyendetsa galimoto kupyolera mu kulipira ndi kutulutsa.Derali ndi losavuta, mtengo wake ndi wotsika, koma magwiridwe ake ndi osauka, ndipo kukhazikika kumakhala koyipa.Ndikosavuta kuwotcha ma LED pomwe magetsi a gridi amasintha, ndipo zotulutsa zake zimakhala zamphamvu kwambiri zomwe sizidzipatula.Kuteteza chipolopolo cha chitetezo.Mphamvu zotsika komanso moyo waufupi, nthawi zambiri ndizoyenera pazinthu zotsika mtengo (mkati mwa 5W).Kwa zinthu zomwe zili ndi mphamvu zambiri, zotulutsa zomwe zimatuluka ndi zazikulu, ndipo capacitor silingathe kupereka zazikulu, apo ayi ndizosavuta kuziwotcha.Kuonjezera apo, dziko liri ndi zofunikira pa mphamvu ya mphamvu ya nyali zamphamvu kwambiri, ndiko kuti, mphamvu yamagetsi pamwamba pa 7W imayenera kukhala yaikulu kuposa 0,7, koma mphamvu yotsutsa-kutsika-pansi mphamvu imakhala kutali (nthawi zambiri pakati pa 0.2-0.3), kotero zinthu zamphamvu kwambiri siziyenera kugwiritsidwa ntchito RC potsika-pansi magetsi.Pamsika, pafupifupi mankhwala onse otsika omwe ali ndi zofunikira zochepa amagwiritsa ntchito magetsi a RC, ndipo zinthu zina zotsika kwambiri, zamphamvu kwambiri zimagwiritsanso ntchito magetsi a RC.
Nthawi yotumiza: Aug-06-2021