{"id":19334,"date":"2020-10-06T16:17:48","date_gmt":"2020-10-06T16:17:48","guid":{"rendered":"http:\/\/www.seznam-novinek.cz.hyperion.blueboard.cz\/?p=19334"},"modified":"2021-02-24T10:51:55","modified_gmt":"2021-02-24T10:51:55","slug":"rezistory-jejich-funkce-a-vyuziti-v-elektrotechnice","status":"publish","type":"post","link":"https:\/\/www.seznam-novinek.cz\/?p=19334","title":{"rendered":"Rezistory, jejich funkce a vyu\u017eit\u00ed v elektrotechnice"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Rezistor je z\u00e1kladn\u00ed elektrotechnickou sou\u010d\u00e1stkou. K \u010demu slou\u017e\u00ed a jak\u00e9 druhy rezistor\u016f rozezn\u00e1v\u00e1me v praxi?<\/strong><\/p>\n\n\n\n

Rezistor je z\u00e1kladn\u00ed elektrotechnickou sou\u010d\u00e1stkou. K \u010demu slou\u017e\u00ed a jak\u00e9 druhy rezistor\u016f rozezn\u00e1v\u00e1me v praxi?<\/p>\n\n\n\n

Co je rezistor<\/h2>\n\n\n\n

Rezistory jsou sou\u010d\u00e1stkou pasivn\u00ed a jsou dvojp\u00f3lov\u00e9. Spole\u010dn\u011b s c\u00edvkou a kondenz\u00e1torem jej \u0159ad\u00edme mezi line\u00e1rn\u00ed pasivn\u00ed sou\u010d\u00e1stky.<\/p>\n\n\n\n

V optim\u00e1ln\u00edm p\u0159\u00edpad\u011b se v elektrick\u00e9m obvodu projevuje pouze jedin\u00e1 jejich vlastnost, a to elektrick\u00fd odpor neboli rezistence. U skute\u010dn\u00fdch rezistor\u016f v\u0161ak takov\u00fdchto ide\u00e1ln\u00edch podm\u00ednek dos\u00e1hnout nelze kv\u016fli jeho geometrii a re\u00e1ln\u011b pou\u017eit\u00e9mu materi\u00e1lu, kter\u00fd m\u00e1 sv\u00e9 specifick\u00e9 vlastnosti.<\/p>\n\n\n\n

Z\u00e1kladn\u00ed vlastnosti rezistoru<\/h2>\n\n\n\n

Tyto sou\u010d\u00e1stky se vyr\u00e1b\u011bj\u00ed z materi\u00e1l\u016f, pro kter\u00e9 je charakteristick\u00fd mal\u00fd sou\u010dinitel tepeln\u00e9ho odporu. Zm\u011bna teploty m\u00e1 tak na hodnotu odporu jen minim\u00e1ln\u00ed vliv.<\/p>\n\n\n\n

Dle t\u00e9to z\u00e1kladn\u00ed vlastnosti byla d\u0159\u00edve sou\u010d\u00e1stka i pojmenov\u00e1na. Doch\u00e1zelo v\u0161ak k zam\u011b\u0148ov\u00e1n\u00ed pojm\u016f. Aby bylo mo\u017en\u00e9 z\u0159eteln\u011b odli\u0161it, kdy se jedn\u00e1 o veli\u010dinu, za\u010daly se tyto sou\u010d\u00e1stky v praxi ofici\u00e1ln\u011b ozna\u010dovat pr\u00e1v\u011b jako rezistory. Term\u00edn \u201eodpor\u201c tak ji\u017e z\u016fstal sp\u00ed\u0161e v rovin\u011b lidov\u00e9ho ozna\u010den\u00ed.<\/p>\n\n\n\n

Odpor nen\u00ed jedinou vlastnost\u00ed rezistoru. D\u00e1le je to tolerance, kter\u00e1 ud\u00e1v\u00e1 mo\u017enou v\u00fdrobn\u00ed odchylku odporu od hodnoty, kter\u00e1 je uvedena na rezistoru. Stanovuje se v procentech. Zat\u00ed\u017eitelnost ozna\u010dovan\u00e1 W pak stanovuje maxim\u00e1ln\u00ed v\u00fdkon, kter\u00fdm lze rezistor dlouhodob\u011b zat\u00ed\u017eit.<\/p>\n\n\n\n

Typy rezistor\u016f<\/h2>\n\n\n\n

Z\u00e1kladn\u00ed rozd\u011blen\u00ed je na pevn\u00e9 a prom\u011bnn\u00e9. Pevn\u00e9 rezistory<\/strong><\/a> maj\u00ed odpor d\u00e1ny pevn\u011b, u prom\u011bnn\u00fdch m\u016f\u017ee doch\u00e1zet k prom\u011bn\u00e1m hodnoty odporu v ur\u010dit\u00e9m rozmez\u00ed. Dle technologie v\u00fdroby se rezistory d\u00e1le d\u011bl\u00ed na dr\u00e1tov\u00e9 a na vrstvov\u00e9, p\u0159\u00edpadn\u011b tak\u00e9 na hmotov\u00e9.<\/p>\n\n\n\n

Praktick\u00e9 vyu\u017eit\u00ed rezistor\u016f je velmi rozs\u00e1hl\u00e9, jedn\u00e1 se o v\u016fbec nejpou\u017e\u00edvan\u011bj\u0161\u00ed slaboproud\u00e9 sou\u010d\u00e1stky. Nap\u0159\u00edklad se tak mohou vyu\u017e\u00edt pro m\u011b\u0159en\u00ed proudu, d\u00e1le pro m\u011b\u0159en\u00ed v\u00fdkonu, p\u0159\u00edpadn\u011b pro tlumen\u00ed kmitav\u00fdch obvod\u016f.<\/p>\n\n\n\n

Rezistory jsou tak rovn\u011b\u017e d\u016fle\u017eitou sou\u010d\u00e1st\u00ed produktov\u00e9 nab\u00eddky spole\u010dnosti TME. A to r\u016fzn\u00e9ho typu, portfolio zahrnuje rezistory uhl\u00edkov\u00e9, metalizovan\u00e9 i dr\u00e1tov\u00e9.<\/p>\n\n\n\n

O spole\u010dnosti TME<\/h2>\n\n\n\n

TME, pln\u00fdm n\u00e1zvem Transfer Multisort Elektronik Sp. z o.o., je polsk\u00e1 spole\u010dnost, kter\u00e1 s\u00eddl\u00ed ve m\u011bst\u011b Lod\u017e. Aktu\u00e1ln\u011b se jedn\u00e1 o nejv\u011bt\u0161\u00edho distributora elektronick\u00fdch sou\u010d\u00e1stek a komponent\u016f ve st\u0159edn\u00ed a v\u00fdchodn\u00ed Evrop\u011b.<\/p>\n\n\n\n

Sou\u010d\u00e1st\u00ed z\u00e1zem\u00ed t\u00e9to spole\u010dnosti v domovsk\u00e9m Polsku jsou tak\u00e9 modern\u00ed sklady, kter\u00e9 umo\u017e\u0148uj\u00ed efektivn\u00ed export v\u00fdrobk\u016f do cel\u00e9ho sv\u011bta, v\u010detn\u011b velmi odlehl\u00fdch lokalit.<\/p>\n\n\n\n

Skupina TME spolupracuje s v\u00edce ne\u017e 1 000 v\u00fdrobc\u016f, jejich\u017e produkty aktu\u00e1ln\u011b nab\u00edz\u00ed. Znamen\u00e1 to n\u011bkolik stovek tis\u00edc druh\u016f zbo\u017e\u00ed. V\u011bt\u0161ina polo\u017eek, konkr\u00e9tn\u011b pln\u00fdch 400 000, je nav\u00edc d\u00edky propracovan\u00e9 logistice dostupn\u00e1 okam\u017eit\u011b. A\u017e 96 % objedn\u00e1vek je vy\u0159\u00edzeno je\u0161t\u011b ve dni, kdy bylo p\u0159ijato.<\/p>\n\n\n\n

D\u00edky tomu je zna\u010dka TME spolehliv\u00fdm partnerem pro \u0159adu obchodn\u00edk\u016f. A to nejen ve velkoobchodu, ale tak\u00e9 v r\u00e1mci maloobchodn\u00edho prodeje.<\/p>\n\n\n\n

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<\/p><\/p>\n\n\n\n

\"\"<\/figure>
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V\u00fdvojov\u00e9 desky Arduino<\/a><\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Rezistor je z\u00e1kladn\u00ed elektrotechnickou sou\u010d\u00e1stkou. K \u010demu slou\u017e\u00ed a jak\u00e9 druhy rezistor\u016f rozezn\u00e1v\u00e1me v praxi? Rezistor je z\u00e1kladn\u00ed elektrotechnickou sou\u010d\u00e1stkou. K \u010demu slou\u017e\u00ed a jak\u00e9 druhy rezistor\u016f rozezn\u00e1v\u00e1me v praxi? Co je rezistor Rezistory jsou sou\u010d\u00e1stkou pasivn\u00ed a jsou dvojp\u00f3lov\u00e9. Spole\u010dn\u011b s c\u00edvkou a kondenz\u00e1torem jej \u0159ad\u00edme mezi line\u00e1rn\u00ed pasivn\u00ed sou\u010d\u00e1stky. V optim\u00e1ln\u00edm p\u0159\u00edpad\u011b se […]<\/p>\n","protected":false},"author":1,"featured_media":19335,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","tdm_status":"","tdm_grid_status":"","footnotes":""},"categories":[124],"tags":[410],"class_list":["post-19334","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bydleni","tag-rezistory"],"_links":{"self":[{"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=\/wp\/v2\/posts\/19334","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19334"}],"version-history":[{"count":0,"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=\/wp\/v2\/posts\/19334\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=\/wp\/v2\/media\/19335"}],"wp:attachment":[{"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19334"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19334"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.seznam-novinek.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}