[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.pappce.cz\/co-si-predstavit-pod-pojmem-elektronicky-predradnik\/#Article","mainEntityOfPage":"https:\/\/www.pappce.cz\/co-si-predstavit-pod-pojmem-elektronicky-predradnik\/","headline":"Co si p\u0159edstavit pod pojmem \u201eelektronick\u00fd p\u0159ed\u0159adn\u00edk\u201c","name":"Co si p\u0159edstavit pod pojmem \u201eelektronick\u00fd p\u0159ed\u0159adn\u00edk\u201c","description":"Modern\u00ed osv\u011btlovac\u00ed technika, to nejsou jen LED diodov\u00e9 zdroje, ale tak\u00e9 osv\u011bd\u010den\u00e1 sv\u00edtidla kompaktn\u00edch a line\u00e1rn\u00edch z\u00e1\u0159ivek a v\u00fdbojek. V sou\u010dasn\u00e9 dob\u011b vyu\u017e\u00edvaj\u00ed vlastnost\u00ed tzv. elektronick\u00fdch digit\u00e1ln\u00edch p\u0159ed\u0159adn\u00edk\u016f. Co si pod t\u00edmto pojmem m\u00e1me p\u0159edstavit a kde v\u0161ude se s t\u00edmto za\u0159\u00edzen\u00edm […]","datePublished":"2019-07-08","dateModified":"2023-06-07","author":{"@type":"Person","@id":"https:\/\/www.pappce.cz\/author\/#Person","name":"","url":"https:\/\/www.pappce.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/232437c79d6ebbb41eb67b1526ce0bc08ee5047d6b1594dc05abcc3258d8e0b3?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/232437c79d6ebbb41eb67b1526ce0bc08ee5047d6b1594dc05abcc3258d8e0b3?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"pappce.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.pappce.cz\/wp-content\/uploads\/img_a359946_w3852_t1573843612.jpg","url":"https:\/\/www.pappce.cz\/wp-content\/uploads\/img_a359946_w3852_t1573843612.jpg","height":0,"width":0},"url":"https:\/\/www.pappce.cz\/co-si-predstavit-pod-pojmem-elektronicky-predradnik\/","about":["N\u00e1kupy"],"wordCount":387,"articleBody":"   Modern\u00ed osv\u011btlovac\u00ed technika, to nejsou jen LED diodov\u00e9 zdroje, ale tak\u00e9 osv\u011bd\u010den\u00e1 sv\u00edtidla kompaktn\u00edch a line\u00e1rn\u00edch z\u00e1\u0159ivek a v\u00fdbojek. V sou\u010dasn\u00e9 dob\u011b vyu\u017e\u00edvaj\u00ed vlastnost\u00ed tzv. elektronick\u00fdch digit\u00e1ln\u00edch p\u0159ed\u0159adn\u00edk\u016f. Co si pod t\u00edmto pojmem m\u00e1me p\u0159edstavit a kde v\u0161ude se s t\u00edmto za\u0159\u00edzen\u00edm m\u016f\u017eeme setkat?  Kdy\u017e se \u0159ekne \u201ep\u0159ed\u0159adn\u00edk\u201c Kdy\u017e se \u0159ekne \u201ep\u0159ed\u0159adn\u00edk\u201c, n\u011bkte\u0159\u00ed lid\u00e9 si nedok\u00e1\u017eou domyslet, o co se jedn\u00e1, k \u010demu je zapot\u0159eb\u00ed, a jak vlastn\u011b pracuje. Ka\u017ed\u00e1 v\u00fdbojka k tomu, aby se rozsv\u00edtila, jej vy\u017eaduje. V\u0161echny n\u00edzkotlak\u00e9 i vysokotlak\u00e9 v\u00fdbojky jej mus\u00ed m\u00edt k dispozici, tedy nejen zdroje pouli\u010dn\u00edho osv\u011btlen\u00ed, ale i line\u00e1rn\u00ed a kompaktn\u00ed z\u00e1\u0159ivky. Rozd\u00edl je pouze v tom, kde se nach\u00e1z\u00ed, nap\u0159. klasick\u00e9 v\u00fdbojky a z\u00e1\u0159ivkov\u00e1 t\u011blesa jej maj\u00ed zabudov\u00e1n ve sv\u00edtidle, u kompaktn\u00edch z\u00e1\u0159ivek je um\u00edst\u011bn uvnit\u0159 keramick\u00e9 patice. P\u0159ed\u0159adn\u00edkem rozum\u00edme za\u0159\u00edzen\u00ed, kter\u00e9 je nutn\u00e9 pro zap\u00e1len\u00ed elektrick\u00e9ho v\u00fdboje. Vtip je v tom, \u017ee tato sv\u00edtidla jsou nap\u00e1jena nap\u011bt\u00edm 230 V z rozvodn\u00e9 elektrick\u00e9 s\u00edt\u011b, ov\u0161em za\u017eehnut\u00ed v\u00fdboje vy\u017eaduje mnohem vy\u0161\u0161\u00ed nap\u011bt\u00ed a\u017e n\u011bkolika tis\u00edc Volt\u016f. D\u0159\u00edve se pro tyto \u00fa\u010dely pou\u017e\u00edval tzv. induk\u010dn\u00ed (elektromagnetick\u00fd) p\u0159ed\u0159adn\u00edk, kter\u00fd fungoval jako start\u00e9r v kombinaci s tlumivkou. Start\u00e9r i tlumivku byste nalezli nap\u0159. po rozebr\u00e1n\u00ed star\u00e9ho z\u00e1\u0159ivkov\u00e9ho t\u011blesa. Dnes tuto zastaralou technologii vyst\u0159\u00eddala elektronika v podob\u011b tzv. m\u011bni\u010d\u016f nap\u011bt\u00ed. Po zap\u00e1len\u00ed v\u00fdboje se ihned provozn\u00ed nap\u011bt\u00ed sn\u00ed\u017e\u00ed pod hodnotu 230 Volt\u016f a to op\u011bt zaji\u0161\u0165uje toto elektronick\u00e9 (digit\u00e1ln\u00ed) za\u0159\u00edzen\u00ed.  Nev\u00fdhody elektromagnetick\u00e9 indukce Induk\u010dn\u00ed p\u0159ed\u0159adn\u00edky m\u011bly sv\u00e9 podstatn\u00e9 nev\u00fdhody, jednak zkracovaly \u017eivotnost sv\u011bteln\u00fdch zdroj\u016f, zp\u016fsobovaly nep\u0159\u00edjemn\u00e9 blik\u00e1n\u00ed na frekvenci 50 kmit\u016f za sekundu, a feritov\u00e1 j\u00e1dra vinut\u00ed uvnit\u0159 nap\u00e1jec\u00edch transform\u00e1tor\u016f vyd\u00e1vala v\u00fdrazn\u00e9 bzu\u010div\u00e9 zvuky. S t\u011bmito jevy se dnes u elektroniky prakticky nesetk\u00e1te.                                                                                                                                                                                                                                                                                                                                                                                          3.5\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Co si p\u0159edstavit pod pojmem \u201eelektronick\u00fd p\u0159ed\u0159adn\u00edk\u201c","item":"https:\/\/www.pappce.cz\/co-si-predstavit-pod-pojmem-elektronicky-predradnik\/#breadcrumbitem"}]}]