{"id":354,"date":"2018-11-10T19:20:56","date_gmt":"2018-11-10T18:20:56","guid":{"rendered":"http:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/?page_id=354"},"modified":"2023-01-24T19:39:00","modified_gmt":"2023-01-24T18:39:00","slug":"zakladni-pojmy-a-4-hodnoty-stridaveho-proudu","status":"publish","type":"page","link":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/zakladni-pojmy-a-4-hodnoty-stridaveho-proudu\/","title":{"rendered":"Z\u00e1kladn\u00ed pojmy a 4 hodnoty"},"content":{"rendered":"<p>Zat\u00edmco u stejnosm\u011brn\u00e9ho nap\u011bt\u00ed a proudu je to s ob\u011bma veli\u010dinama velice jednoduch\u00e9, tzn. <strong>U=R*I<\/strong> a U je nap\u011bt\u00ed a I je proud a R je odpor, tak u st\u0159\u00eddav\u00e9ho nap\u011bt\u00ed a proudu to tak jednoduch\u00e9 nen\u00ed.:<\/p>\n<p>U st\u0159\u00eddav\u00e9ho nap\u011bt\u00ed a proudu existuje:<\/p>\n<ol>\n<li>Nap\u011bt\u00ed efektivn\u00ed: Zna\u010d\u00ed se U<sub>ef<\/sub>.<\/li>\n<li>Nap\u011bt\u00ed maxim\u00e1ln\u00ed:\u00a0Zna\u010d\u00ed se U<sub>max<\/sub>.<\/li>\n<li>Nap\u011bt\u00ed okam\u017eit\u00e9: Zna\u010d\u00ed se mal\u00e9 u.<\/li>\n<li>Nap\u011bt\u00ed st\u0159edn\u00ed: Zna\u010d\u00ed se U<sub>AV<\/sub>.<\/li>\n<\/ol>\n<p>-Okam\u017eit\u00e9 u je nap\u011bt\u00ed v n\u011bjak\u00e9m konkr\u00e9tn\u00edm \u010dasov\u00e9m okam\u017eiku v grafu na p\u0159edchoz\u00ed str\u00e1nce.<\/p>\n<p>-Maxim\u00e1ln\u00ed nap\u011bt\u00ed Umax je okam\u017eit\u00e9 nap\u011bt\u00ed v grafu s maxim\u00e1ln\u00ed velikost\u00ed. Od nuly se m\u016f\u017ee br\u00e1t maxim\u00e1ln\u00ed kladn\u00e9 a maxim\u00e1ln\u00ed z\u00e1porn\u00e9.<\/p>\n<p>-Pro efektivn\u00ed nap\u011bt\u00ed U<sub>ef<\/sub> plat\u00ed vzorec: <strong>U<sub>ef<\/sub> = U<sub>max<\/sub> * ( (druh\u00e1 odmocnina ze 2) \/ 2)<\/strong> \u00a0 A stejn\u011b tak pro proud. Efektivn\u00ed nap\u011bt\u00ed m\u00e1 v\u017edy graf p\u0159\u00edmky.<\/p>\n<p>Zde je obr\u00e1zek v\u0161ech hodnot.:<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-700\" src=\"http:\/\/www.krusinsky.cz\/wp-content\/uploads\/2023\/01\/hodnoty-napeti.png\" alt=\"\" width=\"300\" height=\"186\" \/><a href=\"https:\/\/cs.wikibooks.org\/wiki\/Praktick%C3%A1_elektronika\/St%C5%99%C3%ADdav%C3%BD_proud\">Odkaz na zdroj obr\u00e1zku<\/a><\/p>\n<p>Vodorovn\u00e1 fialov\u00e1 \u010d\u00e1ra je graf efektivn\u00edho nap\u011bt\u00ed. A s proudem je to op\u011bt obdobn\u00e9.<\/p>\n<p>-Pro st\u0159edn\u00ed nap\u011bt\u00ed U<sub>AV<\/sub> plat\u00ed vzorec: <strong>U<sub>AV<\/sub> = 2\/\u03c0 * U<sub>max<\/sub><\/strong>\u00a0\u00a0 A stejn\u011b tak pro proud.<\/p>\n<p>Tyto vzorce existuj\u00ed ov\u0161em jen pro <strong>sinusov\u00fd<\/strong> pr\u016fb\u011bh. Voltmetrem na st\u0159\u00eddav\u00e9 nap\u011bt\u00ed se m\u011b\u0159\u00ed <strong>efektivn\u00ed<\/strong> st\u0159\u00eddav\u00e9 nap\u011bt\u00ed. Amp\u00e9rmetrem na st\u0159\u00eddav\u00fd proud se m\u011b\u0159\u00ed <strong>efektivn\u00ed<\/strong> st\u0159\u00eddav\u00fd proud. <strong>Voltmetry a amp\u00e9rmetry na jin\u00fd pr\u016fb\u011bh ne\u017e na <span style=\"text-decoration: underline;\">sinusov\u00fd<\/span> neexistuj\u00ed.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zat\u00edmco u stejnosm\u011brn\u00e9ho nap\u011bt\u00ed a proudu je to s ob\u011bma veli\u010dinama velice jednoduch\u00e9, tzn. U=R*I a U je nap\u011bt\u00ed a I je proud a R je odpor, tak u st\u0159\u00eddav\u00e9ho nap\u011bt\u00ed a proudu to tak jednoduch\u00e9 nen\u00ed.: U st\u0159\u00eddav\u00e9ho nap\u011bt\u00ed a proudu existuje: Nap\u011bt\u00ed efektivn\u00ed: Zna\u010d\u00ed se Uef. Nap\u011bt\u00ed maxim\u00e1ln\u00ed:\u00a0Zna\u010d\u00ed se Umax. Nap\u011bt\u00ed okam\u017eit\u00e9: Zna\u010d\u00ed [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"class_list":["post-354","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/pages\/354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/comments?post=354"}],"version-history":[{"count":16,"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/pages\/354\/revisions"}],"predecessor-version":[{"id":784,"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/pages\/354\/revisions\/784"}],"wp:attachment":[{"href":"https:\/\/www.krusinsky.cz\/domains\/krusinsky.cz\/wp-json\/wp\/v2\/media?parent=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}