Wasu abokai suna tambayar dalilan da suka fi yawa da hanyoyin magance hasken siginar LED, wasu kuma suna son tambayar dalilin da yasa hasken siginar LED baya haskakawa. Me ke faruwa? A gaskiya ma, akwai matsaloli guda uku da mafita ga hasken siginar.
Kurakurai guda uku da aka saba gani a cikin fitilun siginar LED da mafita:
Matsalar da aka saba gani ita ce matsalar gyarawa. Je zuwa Light City ka sayi ɗaya ka maye gurbinsa. Ba kasafai ake samun matsala a gaba ɗaya ba.
Biyu. Dalilan walƙiyar hasken siginar LED:
1. Ƙarfin fitilar da ƙarfin tuƙin LED ba su daidaita ba, ƙaya ɗaya na fitilar 1W na yau da kullun yana da ƙarfin lantarki :280-300 ma da ƙarfin lantarki :3.0-3.4V, idan guntun fitilar ba shi da isasshen ƙarfi, zai haifar da matsalar toshewar tushen hasken, idan wutar ta yi yawa, ƙaya ba za su iya jure wa makullin ba. A cikin mawuyacin hali, wayoyin zinare ko na jan ƙarfe da ke cikin ƙaya na iya ƙonewa, wanda ke sa ƙaya su kasa aiki.
2. Wutar lantarkin drive ɗin na iya lalacewa, matuƙar ka maye gurbinsa da wani ingantaccen wutar lantarkin drive ɗin, ba zai yi kiftawa ba.
3. Idan direban yana da aikin kariyar zafi fiye da kima, aikin watsar da zafi na fitilar siginar LED ba zai iya cika buƙatun ba, kuma kariyar zafi fiye da kima na direban zai yi walƙiya lokacin da ya fara aiki. Misali, wurin sanya fitilar 20 w da aka yi amfani da shi don haɗa fitilun 30W ba ya yin sanyaya sosai.
4. Idan fitilun waje suma suna da abubuwan da ke faruwa a waje, hakan yana nufin cewa fitilun sun cika da ruwa. Sakamakon haka, idan ya yi kiftawa, ba ya haske. Hasken da direban sun lalace. Idan direban ya yi aiki mai kyau na hana ruwa shiga, to faifan fitilar ya karye kuma za a iya canza tushen hasken.
Uku. Tsarin sarrafa walƙiyar hasken siginar LED:
1. A cikin aikace-aikacen hasken LED mai ƙarancin wutar lantarki a kan layi, yanayin wutar lantarki na gama gari shine yanayin flyback da aka keɓe. Green Dot, direban LED mai 8W a kan layi, ya cika ƙa'idodin hasken Star solid-state. A cikin yanayin ƙira, saboda canjin wutar lantarki mai kusurwa huɗu na sinusoidal na mai sarrafa flyback baya samar da kuzari mai ɗorewa ga son zuciya na farko, da'irar mai aiki da kanta na iya kunnawa kuma ta haifar da walƙiyar haske. Don guje wa wannan matsala, ya zama dole a yi fitarwa ta farko a kan off-set a kowane rabin zagaye. Saboda haka, ya zama dole a zaɓi ƙimar ƙarfin lantarki da juriya da kyau na fitilun siginar LED waɗanda suka ƙunshi da'irar.
2. A al'ada idon ɗan adam zai iya hango walƙiyar haske a mitar 70 Hz, amma sama da haka ba zai iya ba. Saboda haka, a aikace-aikacen hasken LED, idan siginar bugun jini tana da ƙaramin sashi na mita tare da mitar ƙasa da 70 Hz, idon ɗan adam zai ji walƙiya. Tabbas, akwai abubuwa da yawa da zasu iya sa fitilun LED su yi walƙiya a wani takamaiman aikace-aikacen.
3. Ana buƙatar matatun Emi koda a cikin aikace-aikacen tuƙin LED waɗanda ke ba da kyakkyawan gyaran ƙarfin lantarki da kuma tallafawa rage girman maɓallan SCR masu kusurwa uku. Wutar lantarki mai wucewa da matakin maɓallan SCR masu kusurwa biyu ke haifarwa yana motsa sautin halitta na inductor da capacitors a cikin matatar emi.
Idan yanayin resonance ya sa wutar shigarwa ta yi ƙasa da wutar riƙewa ta ɓangaren maɓallin SCR mai kusurwa uku, za a kashe ɓangaren maɓallin SCR mai kusurwa uku. Bayan ɗan lokaci kaɗan, ɓangaren maɓallin SCR mai kusurwa uku yawanci zai sake kunnawa don tayar da wannan resonance ɗin. Ana iya maimaita wannan jerin abubuwan da suka faru sau da yawa a cikin rabin zagaye na yanayin ƙarfin INPUT na semaphore na LED, wanda ke haifar da walƙiyar LED a bayyane.
Lokacin Saƙo: Maris-11-2022
