Porty USB m\u00f4\u017eu ma\u0165 ozna\u010denia ako 5 V 0,5 A, 5 V 1 A alebo 5 V 2 A. Tieto \u010d\u00edsla ozna\u010duj\u00fa nap\u00e4tie a maxim\u00e1lny pr\u00fad, ktor\u00fd m\u00f4\u017ee port poskytn\u00fa\u0165. Umo\u017e\u0148uj\u00fa tie\u017e vypo\u010d\u00edta\u0165 maxim\u00e1lny v\u00fdkon, ktor\u00fd m\u00f4\u017ee port poskytova\u0165.<\/p>\n\n\n\n
5 V je nap\u00e4tie dod\u00e1van\u00e9 portom USB. Hodnota v amp\u00e9roch (A) ozna\u010duje maxim\u00e1lny pr\u00fad, ktor\u00fd m\u00f4\u017ee port poskytn\u00fa\u0165.<\/p>\n\n\n\n
Maxim\u00e1lny v\u00fdkon sa vypo\u010d\u00edta takto:<\/p>\n\n\n\n
V\u00fdkon = Nap\u00e4tie \u00d7 Pr\u00fad<\/strong><\/p>\n\n\n\n Ide o typick\u00e9 pr\u00edklady; skuto\u010dn\u00e9 po\u017eiadavky na v\u00fdkon z\u00e1visia od konkr\u00e9tneho zariadenia a m\u00f4\u017eu sa v\u00fdrazne l\u00ed\u0161i\u0165.<\/p>\n\n\n\n Port s pr\u00fadom 0,5 A je zvy\u010dajne dostato\u010dn\u00fd pre jednoduch\u00e9 USB pr\u00edslu\u0161enstvo, ako s\u00fa flash disky, kl\u00e1vesnice a my\u0161i; mo\u017eno ho pou\u017ei\u0165 aj na nab\u00edjanie zariaden\u00ed s n\u00edzkou spotrebou, ako s\u00fa dia\u013ekov\u00e9 ovl\u00e1da\u010de (napr\u00edklad od spolo\u010dnosti Samsung) a Bluetooth sl\u00fachadl\u00e1. Port s pr\u00fadom 1 A poskytuje viac energie a m\u00f4\u017ee by\u0165 vhodn\u00fd pre zariadenia, ako s\u00fa niektor\u00e9 extern\u00e9 pevn\u00e9 disky. Port s pr\u00fadom 2 A poskytuje a\u017e 10 W a m\u00f4\u017ee by\u0165 u\u017eito\u010dn\u00fd pre zariadenia s vy\u0161\u0161\u00edmi po\u017eiadavkami na v\u00fdkon vr\u00e1tane niektor\u00fdch streamovac\u00edch zariaden\u00ed a na nab\u00edjanie smartf\u00f3nov.<\/p>\n\n\n\n Hodnota pr\u00fadu uveden\u00e1 v ozna\u010den\u00ed portu predstavuje maxim\u00e1lny pr\u00fad, ktor\u00fd je na danom porte k dispoz\u00edcii. K portom s vy\u0161\u0161ou hodnotou maxim\u00e1lneho pr\u00fadu m\u00f4\u017eete pripoji\u0165 aj zariadenia s n\u00edzkou spotrebou; zariadenie odoberie iba to\u013eko pr\u00fadu, ko\u013eko potrebuje.<\/p>\n\n\n\n USB bolo p\u00f4vodne navrhnut\u00e9 predov\u0161etk\u00fdm ako rozhranie na prenos \u00fadajov a poskytovalo relat\u00edvne n\u00edzky v\u00fdkon. V \u0161tandarde USB 2.0 mohol \u0161tandardn\u00fd vysokov\u00fdkonn\u00fd USB port poskytova\u0165 a\u017e 500 mA (0,5 A). Tento pr\u00fad bol dostato\u010dn\u00fd na nap\u00e1janie perif\u00e9rnych zariaden\u00ed, ako s\u00fa po\u010d\u00edta\u010dov\u00e9 my\u0161i, kl\u00e1vesnice a flash disky.<\/p>\n\n\n\n S roz\u0161\u00edren\u00edm pou\u017e\u00edvania USB na nap\u00e1janie extern\u00fdch pevn\u00fdch diskov, multimedi\u00e1lnych zariaden\u00ed, smartf\u00f3nov a \u010fal\u0161\u00edch zariaden\u00ed sa porty s vy\u0161\u0161ou hodnotou maxim\u00e1lneho pr\u00fadu st\u00e1vali \u010doraz be\u017enej\u0161\u00edmi. Tieto porty u\u017e bolo mo\u017en\u00e9 pou\u017e\u00edva\u0165 na pripojenie a nab\u00edjanie telef\u00f3nu.<\/p>\n\n\n\n Zariadenia ur\u010den\u00e9 na pripojenie zariaden\u00ed s vysokou spotrebou za\u010dali by\u0165 vybaven\u00e9 aj portami s pr\u00fadom 2 A; tak\u00e9to porty mo\u017eno n\u00e1js\u0165 napr\u00edklad v niektor\u00fdch modeloch telev\u00edzorov, zatia\u013e \u010do porty s pr\u00fadom 3 A sa zvy\u010dajne pou\u017e\u00edvaj\u00fa v nab\u00edjac\u00edch staniciach na r\u00fdchle nab\u00edjanie zariaden\u00ed.<\/p>\n\n\n\n USB 2.0 je \u0161pecifik\u00e1cia rozhrania USB \u2014 konkr\u00e9tne verzia portu definovan\u00e1 r\u00fdchlos\u0165ou prenosu \u00fadajov. Hodnota 0,5 A ozna\u010duje v\u00fdkon dostupn\u00fd prostredn\u00edctvom \u0161tandardn\u00e9ho portu USB 2.0.<\/p>\n\n\n\n Porty USB Type-C s\u00fa viac \u0161tandardizovan\u00e9 a dok\u00e1\u017eu pracova\u0165 s r\u00f4znymi hodnotami pr\u00fadu a nap\u00e4tia; napr\u00edklad tieto porty podporuj\u00fa v z\u00e1vislosti od modelu v\u00fdkon a\u017e 100 W a \u0161iroko sa pou\u017e\u00edvaj\u00fa v notebookoch.<\/p>\n\n\n\n Smartf\u00f3ny m\u00f4\u017eete nab\u00edja\u0165 prostredn\u00edctvom portov USB, ale treba ma\u0165 na pam\u00e4ti, \u017ee modern\u00e9 zariadenia vo v\u0161eobecnosti vy\u017eaduj\u00fa pomerne vysok\u00fd pr\u00fad a zvy\u010dajne sa nab\u00edjaj\u00fa pri 2 A alebo vy\u0161\u0161om pr\u00fade. Hoci sa bud\u00fa nab\u00edja\u0165 aj z portov s ni\u017e\u0161\u00edm v\u00fdkonom, bude to trva\u0165 dlh\u0161ie.<\/p>\n","protected":false},"excerpt":{"rendered":" Porty USB m\u00f4\u017eu ma\u0165 ozna\u010denia ako 5 V 0,5 A, 5 V 1 A alebo 5 V 2 A. Tieto \u010d\u00edsla ozna\u010duj\u00fa nap\u00e4tie a maxim\u00e1lny pr\u00fad, ktor\u00fd m\u00f4\u017ee port poskytn\u00fa\u0165. Umo\u017e\u0148uj\u00fa tie\u017e vypo\u010d\u00edta\u0165 maxim\u00e1lny v\u00fdkon, ktor\u00fd m\u00f4\u017ee port poskytova\u0165. \u010co znamenaj\u00fa hodnoty 5 V a A? 5 V je nap\u00e4tie dod\u00e1van\u00e9 portom USB. Hodnota v […]<\/p>\n","protected":false},"author":1,"featured_media":13199,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[86],"tags":[],"class_list":["post-13198","post","type-post","status-publish","format-standard","has-post-thumbnail","category-technologia"],"_links":{"self":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/13198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/comments?post=13198"}],"version-history":[{"count":1,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/13198\/revisions"}],"predecessor-version":[{"id":13200,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/13198\/revisions\/13200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media\/13199"}],"wp:attachment":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media?parent=13198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/categories?post=13198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/tags?post=13198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Ozna\u010denie USB<\/th> Maxim\u00e1lny pr\u00fad<\/th> Maxim\u00e1lny v\u00fdkon<\/th> Typick\u00e9 pou\u017eitie<\/th><\/tr><\/thead> 5 V 0,5 A<\/td> 0,5 A<\/td> 2,5 W<\/td> USB flash disky, kl\u00e1vesnice, my\u0161i a \u010fal\u0161ie zariadenia s n\u00edzkou spotrebou<\/td><\/tr> 5 V 1 A<\/td> 1 A<\/td> 5 W<\/td> Niektor\u00e9 extern\u00e9 pevn\u00e9 disky, USB rozbo\u010dova\u010de a \u010fal\u0161ie USB zariadenia s vy\u0161\u0161ou spotrebou<\/td><\/tr> 5 V 2 A<\/td> 2 A<\/td> 10 W<\/td> Streamovacie zariadenia, niektor\u00e9 extern\u00e9 disky a nab\u00edjanie smartf\u00f3nov<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Pre\u010do sa menovit\u00fd pr\u00fad USB portov zv\u00fd\u0161il z 0,5 A na 3 A?<\/strong><\/h2>\n\n\n\n