[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.rtps.sk\/lumidky\/#Article","mainEntityOfPage":"https:\/\/www.rtps.sk\/lumidky\/","headline":"Lumidky","name":"Lumidky","description":"T\u00e1to polovodi\u010dov\u00e1 \u017eiarovka vyu\u017e\u00edva ako zdroj svetla pr\u00e1ve LED di\u00f3dy. Nako\u013eko je ich v\u00fdkon pr\u00edli\u0161 mal\u00fd oproti klasickej \u017eiarovke, mus\u00ed sa pou\u017ei\u0165 viacero di\u00f3d s\u00fa\u010dasne. Oproti klasick\u00fdm \u017eiarovk\u00e1m v\u0161ak maj\u00fa<a href=\"https:\/\/www.rtps.sk\/lumidky\/\" class=\"d-block breadmore\">Read More<\/a>\n","datePublished":"2022-05-21","dateModified":"2022-05-21","author":{"@type":"Person","@id":"https:\/\/www.rtps.sk\/author\/#Person","name":"","url":"https:\/\/www.rtps.sk\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/bf8a2da9791e94b6eb5cec245ee5eeceecb651e79e829278e2c546441579397e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/bf8a2da9791e94b6eb5cec245ee5eeceecb651e79e829278e2c546441579397e?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"rtps.sk","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.rtps.sk\/wp-content\/uploads\/ceiling-lamp-335975_960_720_1.jpg","url":"https:\/\/www.rtps.sk\/wp-content\/uploads\/ceiling-lamp-335975_960_720_1.jpg","height":0,"width":0},"url":"https:\/\/www.rtps.sk\/lumidky\/","wordCount":384,"articleBody":"   T\u00e1to polovodi\u010dov\u00e1 \u017eiarovka vyu\u017e\u00edva ako zdroj svetla pr\u00e1ve LED di\u00f3dy. Nako\u013eko je ich v\u00fdkon pr\u00edli\u0161 mal\u00fd oproti klasickej \u017eiarovke, mus\u00ed sa pou\u017ei\u0165 viacero di\u00f3d s\u00fa\u010dasne. Oproti klasick\u00fdm \u017eiarovk\u00e1m v\u0161ak maj\u00fa dlh\u0161iu \u017eivotnos\u0165 a efekt\u00edvnos\u0165, ak si porovn\u00e1me vstupn\u00e9 n\u00e1klady. Ke\u010f sa pozrieme na LED di\u00f3du jednotlivo, ide o slabopr\u00fadov\u00e9 polovodi\u010dov\u00e9 zariadenie, ktor\u00e9 nesmie by\u0165 pou\u017eit\u00e9 priamo so striedav\u00fdm pr\u00fadom. Jednou s mo\u017enost\u00ed je rezistor av\u0161ak ide o neefekt\u00edvny krok, ke\u010f\u017ee sa v \u0148om strat\u00ed v\u00e4\u010d\u0161ina nap\u00e4tia. \u010eal\u0161ou mo\u017enos\u0165ou je jednoduch\u00e9 zapojenie, ktor\u00e9 s\u00edce dok\u00e1\u017ee minimalizova\u0165 straty, ale v\u00fdpadok jednej di\u00f3dy vyrad\u00ed z prev\u00e1dzky cel\u00fa s\u00e9riu. Najvhodnej\u0161ou mo\u017enos\u0165ou je paraleln\u00e9 zapojenie a v praxi sa vyu\u017e\u00edva zapojenie troch alebo viacer\u00fdch tak\u00fdchto s\u00e9ri\u00ed.LED \u017eiarovky do dom\u00e1cnost\u00ed sa vyr\u00e1baj\u00fa s klasick\u00fdm, Edisonov\u00fdm z\u00e1vitom a nieko\u013ek\u00fdmi \u010eal\u0161\u00edmi. Nev\u00fdhodou tak\u00fdchto \u017eiaroviek je, \u017ee potrebuj\u00fa dostato\u010dn\u00e9 chladenie. Tie, ktor\u00e9 s\u00fa ur\u010den\u00e9 na v\u00e4\u010d\u0161ie v\u00fdkony, maj\u00fa aj v\u00e4\u010d\u0161ie rozmery. Svetlo z LED \u017eiaroviek sa v\u00e4\u010d\u0161inou d\u00e1 stlmi\u0165 a je \u010diasto\u010dne smerov\u00e9. Tieto \u017eiarovky postupom \u010dasu str\u00e1caj\u00fa na intenzite svetla iba ve\u013emi pomaly. Dostaneme ich k\u00fapi\u0165 v r\u00f4znych farebn\u00fdch prevedeniach. V\u00fdhodou oproti klasick\u00fdm \u017eiarovk\u00e1m je, \u017ee neobsahuj\u00fa ortu\u0165. \u010cerven\u00e9 a infra\u010derven\u00e9 diody boli dostupn\u00e9 u\u017e v roku 1980, st\u00e1le v\u0161ak na trhu ch\u00fdbali aj in\u00e9 farby. Z\u00e1ujem smeroval ku modrej ledke, ktor\u00e1 by v kombin\u00e1cii s \u010dervenou a zelenou viedla ku farebn\u00fdm ploch\u00fdm displejom. Inak, vedeli ste, \u017ee term\u00edn LED \u017eiarovka je pomerne nepresn\u00fdm ozna\u010den\u00edm tohto vyn\u00e1lezu? Je to preto, \u017ee v sebe nemaj\u00fa roz\u017eeraven\u00e9 vl\u00e1kno, ako je to pri klasick\u00fdch \u017eiarovk\u00e1ch \u2013 od \u010doho teda vznikol pr\u00e1ve tento n\u00e1zov. LED \u017eiarovky sa naopak vyzna\u010duj\u00fa t\u00fdm, \u017ee v nich nevznik\u00e1 takmer \u017eiadne teplo. Profesor J\u00e1n Valenta navrhol term\u00edn lumidka, v ktorom chcel obsiahnu\u0165 oba procesy, ktor\u00e9 sa v nej odohr\u00e1vaj\u00fa. Zatia\u013e sa v\u0161ak tento term\u00edn neujal.                                                                                                                                                                                                                                                                                                                                                                                                  "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Lumidky","item":"https:\/\/www.rtps.sk\/lumidky\/#breadcrumbitem"}]}]