{"id":2066,"date":"2025-09-02T01:57:08","date_gmt":"2025-09-02T01:57:08","guid":{"rendered":"https:\/\/nbaem.com\/?p=2066"},"modified":"2025-09-02T02:18:35","modified_gmt":"2025-09-02T02:18:35","slug":"what-is-meant-by-magnetic-flux","status":"publish","type":"post","link":"https:\/\/nbaem.com\/cs\/what-is-meant-by-magnetic-flux\/","title":{"rendered":"Pochopen\u00ed definice magnetick\u00e9ho toku, vzorce a pou\u017eit\u00ed"},"content":{"rendered":"<h2>Definice magnetick\u00e9ho toku<\/h2>\n<p>Magnetick\u00fd tok je m\u011b\u0159\u00edtkem celkov\u00e9ho magnetick\u00e9ho pole proch\u00e1zej\u00edc\u00edho dan\u00fdm povrchem. V\u011bdecky je definov\u00e1n jako sou\u010din hustoty magnetick\u00e9ho toku a plochy, kterou prostupuje, s ohledem na \u00fahel mezi nimi. Jin\u00fdmi slovy, \u0159\u00edk\u00e1 v\u00e1m <strong>kolik magnetick\u00e9ho pole skute\u010dn\u011b proch\u00e1z\u00ed povrchem<\/strong>.<\/p>\n<p>Pro za\u010d\u00e1te\u010dn\u00edky si p\u0159edstavte magnetick\u00fd tok jako \u201ekolik magnetick\u00fdch silo\u010dar proch\u00e1z\u00ed povrchem\u201c. Pokud jich proch\u00e1z\u00ed v\u00edce, magnetick\u00fd tok je vy\u0161\u0161\u00ed. Pokud jich proch\u00e1z\u00ed m\u00e9n\u011b, je ni\u017e\u0161\u00ed.<\/p>\n<p>Je d\u016fle\u017eit\u00e9 rozli\u0161ovat mezi souvisej\u00edc\u00edmi term\u00edny:<\/p>\n<table>\n<thead>\n<tr>\n<th>Term\u00edn<\/th>\n<th>V\u00fdznam<\/th>\n<th>Jednotka<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Magnetick\u00fd tok (\u03a6)<\/strong><\/td>\n<td>Celkov\u00e9 magnetick\u00e9 pole proch\u00e1zej\u00edc\u00ed povrchem<\/td>\n<td>Weber (Wb)<\/td>\n<\/tr>\n<tr>\n<td><strong>Magnetick\u00e9 pole (H)<\/strong><\/td>\n<td>S\u00edla magnetick\u00e9ho vlivu<\/td>\n<td>Amp\u00e9r na metr (A\/m)<\/td>\n<\/tr>\n<tr>\n<td><strong>Magnetick\u00e1 indukce (B)<\/strong><\/td>\n<td>Magnetick\u00fd tok na jednotku plochy<\/td>\n<td>Tesla (T) = Wb\/m\u00b2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li><strong>Magnetick\u00e9 pole<\/strong> je p\u0159ibli\u017en\u011b intenzitou magnetick\u00e9ho efektu.<\/li>\n<li><strong>Magnetick\u00e1 indukce<\/strong> popisuje, jak je magnetick\u00fd tok koncentrovan\u00fd v dan\u00e9 oblasti.<\/li>\n<li><strong>Magnetick\u00fd tok<\/strong> d\u00edv\u00e1 se na v\u011bt\u0161\u00ed obr\u00e1zek \u2014 celkov\u00fd efekt p\u0159es oblast.<\/li>\n<\/ul>\n<p>V praktick\u00e9m smyslu, zat\u00edmco magnetick\u00e1 indukce \u0159\u00edk\u00e1, jak siln\u00fd je magnet na ur\u010dit\u00e9m m\u00edst\u011b, magnetick\u00fd tok ud\u00e1v\u00e1 celkov\u00fd magnetick\u00fd vliv p\u0159es prostor nebo objekt. Tento rozd\u00edl je kl\u00ed\u010dov\u00fd v in\u017een\u00fdrsk\u00fdch aplikac\u00edch od n\u00e1vrhu transform\u00e1tor\u016f po v\u00fdkon vz\u00e1cn\u00fdch zeminov\u00fdch magnet\u016f <strong><span style=\"color: #ff6600;\">(<a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/cs\/what-is-a-rare-earth-magnet\/\" target=\"_blank\" rel=\"noopener\">v\u00edce se dozv\u00edte zde<\/a>).<\/span><\/strong><\/p>\n<h2>Fyzika za magnetick\u00fdm tokem<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Magnetic_Flux_and_Field_Lines_uOfHKfCAR.webp\" alt=\"Magnetick\u00fd tok a linie magnetick\u00e9ho pole\" \/><\/p>\n<p>Magnetick\u00fd tok je o tom, kolik magnetick\u00e9ho pole proch\u00e1z\u00ed dan\u00fdm povrchem. M\u016f\u017eete si p\u0159edstavit magnetick\u00e9 pole jako neviditeln\u00e9 vl\u00e1kna kolem magnetu nebo vodi\u010de s proudem. \u010c\u00edm v\u00edce linek proch\u00e1z\u00ed oblast\u00ed, t\u00edm v\u011bt\u0161\u00ed je magnetick\u00fd tok. Pokud je povrch naklon\u011bn, m\u00e9n\u011b linek j\u00edm proch\u00e1z\u00ed, co\u017e znamen\u00e1 men\u0161\u00ed tok.<\/p>\n<p>Ve fyzice m\u011b\u0159\u00edme magnetick\u00fd tok v <strong>Weber (Wb)<\/strong>, SI jednotce. Jeden Weber odpov\u00edd\u00e1 celkov\u00e9mu magnetick\u00e9mu poli, kter\u00e9 proch\u00e1z\u00ed plochou o velikosti jednoho \u010dtvere\u010dn\u00edho metru, kdy\u017e je magnetick\u00e1 indukce jedna Tesla. Symbol pro magnetick\u00fd tok je <strong>\u03a6<\/strong>.<\/p>\n<p>Magnetick\u00fd tok je zp\u016fsob, jak p\u0159i\u0159adit \u010d\u00edslo k \u201emno\u017estv\u00ed\u201c magnetismu proch\u00e1zej\u00edc\u00edho n\u011b\u010d\u00edm, co\u017e usnad\u0148uje srovn\u00e1n\u00ed r\u016fzn\u00fdch magnetick\u00fdch uspo\u0159\u00e1d\u00e1n\u00ed, v\u00fdpo\u010det elektrick\u00e9 v\u00fdroby a n\u00e1vrh za\u0159\u00edzen\u00ed jako jsou motory, gener\u00e1tory a transform\u00e1tory.<\/p>\n<h2>Matematick\u00fd v\u00fdraz magnetick\u00e9ho toku<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Magnetic_flux_formula_explanation_dzB3WfgVh.webp\" alt=\"Vysv\u011btlen\u00ed vzorce magnetick\u00e9ho toku\" \/><\/p>\n<p>Magnetick\u00fd tok (\u03a6) se vypo\u010d\u00edt\u00e1v\u00e1 pomoc\u00ed vzorce:<\/p>\n<h3>\u03a6 = B \u00b7 A \u00b7 cos(\u03b8)<br \/>\nZde je vysv\u011btlen\u00ed jednotliv\u00fdch \u010d\u00e1st\u00ed:<\/h3>\n<p>B \u2013 Hustota magnetick\u00e9ho toku, m\u011b\u0159en\u00e1 v tesl\u00edch (T). Ud\u00e1v\u00e1, jak siln\u00e9 je magnetick\u00e9 pole.<br \/>\nA \u2013 Plocha, kterou magnetick\u00e9 pole proch\u00e1z\u00ed, m\u011b\u0159en\u00e1 v metrech \u010dtvere\u010dn\u00edch (m\u00b2).<br \/>\n\u03b8 \u2013 \u00dahel mezi sm\u011brem magnetick\u00e9ho pole a norm\u00e1lou povrchu (imagin\u00e1rn\u00ed \u010d\u00e1ra kolm\u00e9 na povrch).<\/p>\n<p>Pokud je pole dokonale kolm\u00e9 na povrch (\u03b8 = 0\u00b0), cos(\u03b8) = 1 a tok je na sv\u00e9m maximu. Pokud je pole rovnob\u011b\u017en\u00e9 s povrchem (\u03b8 = 90\u00b0), cos(\u03b8) = 0, co\u017e znamen\u00e1, \u017ee tok j\u00edm neproch\u00e1z\u00ed.<br \/>\nP\u0159\u00edklad:<\/p>\n<p>P\u0159edstavte si ploch\u00fd c\u00edvku s plochou 0,05 m\u00b2 um\u00edst\u011bnou v homogenn\u00edm magnetick\u00e9m poli o intenzit\u011b 0,8 T. Pokud je pole v \u00fahlu 30\u00b0 k c\u00edvce:<\/p>\n<p>\u03a6 = 0,8 \u00d7 0,05 \u00d7 cos(30\u00b0)<br \/>\n\u03a6 \u2248 0,8 \u00d7 0,05 \u00d7 0,866<br \/>\n\u03a6 \u2248 0,0346 Wb (weber\u016f)<\/p>\n<p>Toto n\u00e1m \u0159\u00edk\u00e1 celkov\u00fd magnetick\u00fd tok \u201epro\u0159ez\u00e1vaj\u00edc\u00ed\u201c plochu c\u00edvky v dan\u00e9m \u00fahlu.<\/p>\n<h2>M\u011b\u0159en\u00ed magnetick\u00e9ho toku<\/h2>\n<p>M\u011b\u0159en\u00ed <strong>magnetick\u00e9ho toku<\/strong> je o tom, v\u011bd\u011bt, kolik magnetick\u00e9ho pole proch\u00e1z\u00ed danou plochou. V praktick\u00e9 pr\u00e1ci se to prov\u00e1d\u00ed pomoc\u00ed za\u0159\u00edzen\u00ed jako je <strong>fluxmetr<\/strong> or <strong>Senzory Hallova jevu<\/strong>. Fluxmetr je navr\u017een tak, aby p\u0159\u00edmo m\u011b\u0159il celkov\u00fd magnetick\u00fd tok ve Weberov\u00fdch jednotk\u00e1ch (Wb), co\u017e ho \u010din\u00ed ide\u00e1ln\u00edm pro laboratorn\u00ed testov\u00e1n\u00ed a inspekce. Senzory Hallova jevu naopak detekuj\u00ed zm\u011bny v intenzit\u011b magnetick\u00e9ho pole a mohou b\u00fdt pou\u017eity v syst\u00e9mech sledov\u00e1n\u00ed v re\u00e1ln\u00e9m \u010dase.<\/p>\n<p>V \u010cesk\u00e9 republice, pr\u016fmysly jako <strong>v\u00fdroba transform\u00e1tor\u016f<\/strong>, <strong>v\u00fdroba motor\u016f<\/strong>, a <strong>testov\u00e1n\u00ed magnetick\u00fdch materi\u00e1l\u016f<\/strong> se siln\u011b spol\u00e9haj\u00ed na p\u0159esn\u00e1 m\u011b\u0159en\u00ed magnetick\u00e9ho toku. To zaji\u0161\u0165uje, \u017ee sou\u010d\u00e1sti spl\u0148uj\u00ed v\u00fdkonnostn\u00ed normy a \u017ee magnety nebo c\u00edvky vytv\u00e1\u0159ej\u00ed p\u0159esn\u00fd po\u017eadovan\u00fd magnetick\u00fd efekt. V <strong>kontrola kvality<\/strong>, tato m\u011b\u0159en\u00ed pom\u00e1haj\u00ed odhalit z\u00e1vady, jako jsou nedostate\u010dn\u011b v\u00fdkonn\u00e9 magnety, nespr\u00e1vn\u00e9 vinut\u00ed c\u00edvek nebo vady materi\u00e1l\u016f\u2014\u0161et\u0159\u00ed n\u00e1klady a zabra\u0148uj\u00ed selh\u00e1n\u00ed za\u0159\u00edzen\u00ed.<\/p>\n<p>Obvykl\u00e9 techniky m\u011b\u0159en\u00ed magnetick\u00e9ho toku zahrnuj\u00ed:<\/p>\n<ul>\n<li><strong>P\u0159\u00edm\u00e9 m\u011b\u0159en\u00ed fluxmetrem<\/strong> pro p\u0159esn\u00e9 \u010dten\u00ed v v\u00fdzkumu a kalibraci.<\/li>\n<li><strong>Senzory Hallova jevu<\/strong> pro ter\u00e9nn\u00ed testov\u00e1n\u00ed a automatiza\u010dn\u00ed syst\u00e9my.<\/li>\n<li><strong>Smy\u010dkov\u00e9 c\u00edvky<\/strong> pro detekci zm\u011bn toku v rota\u010dn\u00edch stroj\u00edch nebo transform\u00e1torech.<\/li>\n<\/ul>\n<p>P\u0159esn\u00e9 m\u011b\u0159en\u00ed znamen\u00e1 lep\u0161\u00ed konzistenci produktu, zv\u00fd\u0161enou \u00fa\u010dinnost a shodu s bezpe\u010dnostn\u00edmi a v\u00fdkonnostn\u00edmi normami.<\/p>\n<h2>Aplikace a v\u00fdznam magnetick\u00e9ho toku<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Magnetic_Flux_in_Electrical_Devices_XBK8Sya6b.webp\" alt=\"Magnetick\u00fd tok v elektrick\u00fdch za\u0159\u00edzen\u00edch\" \/><\/p>\n<p>Magnetick\u00fd tok hraje velkou roli v tom, jak funguje mnoho elektrick\u00fdch za\u0159\u00edzen\u00ed. V <strong>elektrotechnice<\/strong>, je j\u00e1drem toho, jak <strong>transform\u00e1tory, motory a gener\u00e1tory<\/strong> funguj\u00ed. U transform\u00e1toru p\u0159en\u00e1\u0161\u00ed magnetick\u00fd tok energii mezi c\u00edvkami bez fyzick\u00e9ho kontaktu. U motor\u016f a gener\u00e1tor\u016f zm\u011bny v magnetick\u00e9m toku vytv\u00e1\u0159ej\u00ed pohyb nebo elekt\u0159inu prost\u0159ednictv\u00edm elektromagnetick\u00e9 indukce.<\/p>\n<p>Pokud jde o <strong>v\u00fdb\u011br magnetick\u00fdch materi\u00e1l\u016f<\/strong>, je d\u016fle\u017eit\u00e9 zn\u00e1t jejich schopnosti toku. Materi\u00e1ly s vysokou magnetickou permeabilitou mohou kan\u00e1lovat magnetick\u00fd tok efektivn\u011bji, co\u017e zlep\u0161uje v\u00fdkon a sni\u017euje ztr\u00e1ty energie. To je d\u016fle\u017eit\u00e9 v odv\u011btv\u00edch jako automobilov\u00fd pr\u016fmysl, obnoviteln\u00e9 zdroje energie a v\u00fdroba elektroniky.<\/p>\n<p>Technologie zalo\u017een\u00e9 na magnetick\u00e9m toku pou\u017e\u00edv\u00e1me ka\u017ed\u00fd den, ani\u017e bychom si to uv\u011bdomovali:<\/p>\n<ul>\n<li><strong>Chytr\u00e9 telefony a notebooky<\/strong> z\u00e1vis\u00ed na sou\u010d\u00e1stech ovlivn\u011bn\u00fdch magnetick\u00fdm tokem pro bezdr\u00e1tov\u00e9 nab\u00edjen\u00ed a reproduktory.<\/li>\n<li><strong>MRI p\u0159\u00edstroje<\/strong> v nemocnic\u00edch pou\u017e\u00edvaj\u00ed siln\u00fd magnetick\u00fd tok k vytv\u00e1\u0159en\u00ed detailn\u00edch sn\u00edmk\u016f t\u011bla.<\/li>\n<li><strong>Induk\u010dn\u00ed varn\u00e9 desky<\/strong> oh\u0159\u00edvaj\u00ed j\u00eddlo zm\u011bnou magnetick\u00e9ho toku p\u0159es va\u0159ic\u00ed n\u00e1dobu.<\/li>\n<li><strong>V\u011btrn\u00e9 turb\u00edny<\/strong> generuj\u00ed energii p\u0159em\u011bnou zm\u011bn magnetick\u00e9ho toku na elekt\u0159inu.<\/li>\n<\/ul>\n<p>Od mal\u00fdch elektronick\u00fdch za\u0159\u00edzen\u00ed po velk\u00e9 elektr\u00e1rny je \u0159\u00edzen\u00ed a vyu\u017e\u00edv\u00e1n\u00ed magnetick\u00e9ho toku kl\u00ed\u010dovou sou\u010d\u00e1st\u00ed v\u00fdroby efektivn\u00edch, spolehliv\u00fdch a bezpe\u010dn\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n<h2>Magnetick\u00fd tok v magnetick\u00fdch materi\u00e1lech<\/h2>\n<p>Magnetick\u00fd tok hraje velkou roli p\u0159i porozum\u011bn\u00ed v\u00fdkonu r\u016fzn\u00fdch magnetick\u00fdch materi\u00e1l\u016f. Materi\u00e1ly jako neodym, ferrit a Alnico dod\u00e1van\u00e9 spole\u010dnost\u00ed NBAEM se li\u0161\u00ed v tom, kolik magnetick\u00e9ho toku dok\u00e1\u017eou zvl\u00e1dnout a udr\u017eet. To z\u00e1vis\u00ed na jejich magnetick\u00e9 permeabilit\u011b, saturaci a odolnosti v\u016f\u010di demagnetizaci. Nap\u0159\u00edklad, <strong>neodymov\u00e9 magnety<\/strong> vytv\u00e1\u0159ej\u00ed velmi vysok\u00fd magnetick\u00fd tok vzhledem ke sv\u00e9 velikosti, co\u017e je \u010din\u00ed ide\u00e1ln\u00edmi pro kompaktn\u00ed, vysoce v\u00fdkonn\u00e9 aplikace jako motory a reproduktory, zat\u00edmco <strong>Ferritov\u00e9 magnety<\/strong> nab\u00edzej\u00ed ni\u017e\u0161\u00ed tok, ale lep\u0161\u00ed teplotn\u00ed stabilitu a n\u00e1kladovou efektivitu.<\/p>\n<p>P\u0159i v\u00fdb\u011bru materi\u00e1l\u016f pro pr\u016fmyslov\u00e9 pou\u017eit\u00ed se in\u017een\u00fd\u0159i zam\u011b\u0159uj\u00ed na:<\/p>\n<ul>\n<li><strong>Schopnost hustoty magnetick\u00e9ho toku<\/strong> (kolik magnetick\u00e9ho pole na jednotku plochy materi\u00e1l unese)<\/li>\n<li><strong>Rozsah provozn\u00ed teploty<\/strong> (n\u011bkter\u00e9 materi\u00e1ly ztr\u00e1cej\u00ed tok p\u0159i zah\u0159\u00e1t\u00ed \u2014 viz <strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/cs\/what-is-the-effect-of-heating-neodymium-magnets\/\">jak\u00fd je \u00fa\u010dinek zah\u0159\u00edv\u00e1n\u00ed neodymov\u00fdch magnet\u016f<\/a>)<\/span><\/strong><\/li>\n<li><strong>Koercivita<\/strong> (odolnost v\u016f\u010di ztr\u00e1t\u011b toku z opa\u010dn\u00fdch magnetick\u00fdch pol\u00ed)<\/li>\n<li><strong>Po\u017eadavky na pou\u017eit\u00ed<\/strong> (siln\u00fd tok pro motory vs stabiln\u00ed tok pro senzory)<\/li>\n<\/ul>\n<p>Nap\u0159\u00edklad u v\u00fdkonov\u00fdch transform\u00e1tor\u016f s magnetick\u00fdmi j\u00e1dry s vysokou kapacitou toku sni\u017euj\u00ed ztr\u00e1ty energie a zlep\u0161uj\u00ed \u00fa\u010dinnost, zat\u00edmco u magnetick\u00fdch senzor\u016f je d\u016fle\u017eit\u011bj\u0161\u00ed konzistentn\u00ed odezva toku ne\u017e maxim\u00e1ln\u00ed s\u00edla. Sortiment materi\u00e1l\u016f NBAEM umo\u017e\u0148uje v\u00fdrobc\u016fm vyv\u00e1\u017eit tyto faktory tak, aby kone\u010dn\u00fd produkt spl\u0148oval c\u00edle v\u00fdkonu, n\u00e1klad\u016f a odolnosti.<\/p>\n<h2>B\u011b\u017en\u00e9 myln\u00e9 p\u0159edstavy o magnetick\u00e9m toku<\/h2>\n<p>Mnoho lid\u00ed si plete <strong>magnetick\u00e9ho toku<\/strong> s <strong>magnetickou intenzitou<\/strong>, ale nejsou to stejn\u00e9 v\u011bci. Magnetick\u00e1 intenzita (m\u011b\u0159en\u00e1 v tesl\u00edch) v\u00e1m \u0159\u00edk\u00e1, jak siln\u00e9 je pole na dan\u00e9m m\u00edst\u011b, zat\u00edmco magnetick\u00fd tok m\u011b\u0159\u00ed <strong>celkov\u00e9 mno\u017estv\u00ed magnetick\u00e9ho pole proch\u00e1zej\u00edc\u00edho danou plochou<\/strong>.<\/p>\n<p>Dva kl\u00ed\u010dov\u00e9 body, kter\u00e9 je t\u0159eba si pamatovat:<\/p>\n<ul>\n<li><strong>Sm\u011br je d\u016fle\u017eit\u00fd<\/strong> \u2013 Magnetick\u00fd tok z\u00e1vis\u00ed na \u00fahlu mezi magnetick\u00fdm polem a povrchem. Pokud je pole paraleln\u00ed k povrchu, tok je nulov\u00fd.<\/li>\n<li><strong>Plocha je d\u016fle\u017eit\u00e1<\/strong> \u2013 V\u011bt\u0161\u00ed plocha \u010del\u00edc\u00ed poli shroma\u017e\u010fuje v\u00edce toku ne\u017e mal\u00e1, i kdy\u017e je s\u00edla pole stejn\u00e1.<\/li>\n<\/ul>\n<p>Zde je rychl\u00fd p\u0159ehled:<\/p>\n<table>\n<thead>\n<tr>\n<th>Term\u00edn<\/th>\n<th>Co to znamen\u00e1<\/th>\n<th>Jednotka<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Magnetick\u00fd tok (\u03a6)<\/td>\n<td>Celkov\u00e9 magnetick\u00e9 pole p\u0159es plochu<\/td>\n<td>Weber (Wb)<\/td>\n<\/tr>\n<tr>\n<td>Magnetick\u00e1 intenzita (B)<\/td>\n<td>Intenzita magnetick\u00e9ho pole v bod\u011b<\/td>\n<td>Tesla (T)<\/td>\n<\/tr>\n<tr>\n<td>Z\u00e1vislost toku<\/td>\n<td>S\u00edla pole, velikost plochy a \u00fahel<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Tip:<\/strong> V\u017edy zva\u017eujte jak orientaci pole, tak velikost plochy p\u0159i mluven\u00ed o toku. To je obzvl\u00e1\u0161\u0165 d\u016fle\u017eit\u00e9 p\u0159i n\u00e1vrhu transform\u00e1tor\u016f, motor\u016f nebo magnetick\u00fdch senzor\u016f.<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>Co se stane s magnetick\u00fdm tokem v uzav\u0159en\u00e9m obvodu<\/h3>\n<p>V uzav\u0159en\u00e9m magnetick\u00e9m obvodu (nap\u0159\u00edklad uvnit\u0159 j\u00e1dra transform\u00e1toru) magnetick\u00fd tok proch\u00e1z\u00ed materi\u00e1lem s minim\u00e1ln\u00ed ztr\u00e1tou, proto\u017ee cesta je spojit\u00e1 a obvykle vyrobena z materi\u00e1lu s vysokou permeabilitou. Tento uspo\u0159\u00e1d\u00e1n\u00ed pom\u00e1h\u00e1 udr\u017eet \u00fanik toku na n\u00edzk\u00e9 \u00farovni, co\u017e zvy\u0161uje \u00fa\u010dinnost. Pokud je v obvodu mezera, tok klesne, proto\u017ee vzduch m\u00e1 mnohem ni\u017e\u0161\u00ed magnetickou permeabilitu ne\u017e j\u00e1drov\u00fd materi\u00e1l.<\/p>\n<h3>Jak teplota ovliv\u0148uje magnetick\u00fd tok v materi\u00e1lech<\/h3>\n<p>Zm\u011bny teploty mohou ovlivnit magnetick\u00fd tok, proto\u017ee magnetick\u00e9 vlastnosti materi\u00e1l\u016f se s teplem m\u011bn\u00ed.<\/p>\n<ul>\n<li><strong>N\u00edzk\u00e9 teploty<\/strong> \u2013 Magnetick\u00e9 materi\u00e1ly maj\u00ed tendenci l\u00e9pe udr\u017eovat tok.<\/li>\n<li><strong>Vy\u0161\u0161\u00ed teploty<\/strong> \u2013 Magnetick\u00e1 s\u00edla se \u010dasto oslabuje, co\u017e sni\u017euje tok.<\/li>\n<li><strong>Nad Curieovou teplotou<\/strong> \u2013 Materi\u00e1ly ztr\u00e1cej\u00ed feromagnetick\u00e9 vlastnosti \u00fapln\u011b a magnetick\u00fd tok nelze udr\u017eet.<\/li>\n<\/ul>\n<h3>Rozd\u00edl mezi magnetick\u00fdm tokem a hustotou magnetick\u00e9ho toku<\/h3>\n<table>\n<thead>\n<tr>\n<th>Term\u00edn<\/th>\n<th>Symbol<\/th>\n<th>Jednotka<\/th>\n<th>V\u00fdznam<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Magnetick\u00fd tok<\/strong><\/td>\n<td>\u03a6 (F\u00ed)<\/td>\n<td>Weber (Wb)<\/td>\n<td>Celkov\u00e9 mno\u017estv\u00ed magnetick\u00e9ho pole proch\u00e1zej\u00edc\u00ed danou plochou<\/td>\n<\/tr>\n<tr>\n<td><strong>Hustota magnetick\u00e9ho toku<\/strong><\/td>\n<td>B<\/td>\n<td>Tesla (T)<\/td>\n<td>Magnetick\u00fd tok na jednotku plochy; jak je magnetick\u00e9 pole koncentrovan\u00e9 na plo\u0161e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Rychl\u00fd tip:<\/strong> Flux se t\u00fdk\u00e1 <em>celkov\u00e9ho<\/em> pole p\u0159es ur\u010ditou plochu, zat\u00edmco hustota fluxu se t\u00fdk\u00e1 <em>jak intenzivn\u00ed<\/em> je na bod\u011b.<\/p>","protected":false},"excerpt":{"rendered":"<p>Zjist\u011bte, co znamen\u00e1 magnetick\u00fd tok, jeho vzorec, jednotky, m\u011b\u0159ic\u00ed metody a role v elektrotechnice a magnetick\u00fdch materi\u00e1lech<\/p>","protected":false},"author":1,"featured_media":2065,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/What_is_meant_by_magnetic_flux_yg57zxIFM.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/2066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/comments?post=2066"}],"version-history":[{"count":1,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/2066\/revisions"}],"predecessor-version":[{"id":2079,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/2066\/revisions\/2079"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media\/2065"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media?parent=2066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/categories?post=2066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/tags?post=2066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}