{"id":5002,"date":"2024-12-24T11:52:06","date_gmt":"2024-12-24T10:52:06","guid":{"rendered":"https:\/\/www.zsvltava.cz\/fyzika\/?p=5002"},"modified":"2025-04-09T11:33:07","modified_gmt":"2025-04-09T09:33:07","slug":"3-resene-priklady-s-transformatory","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=5002","title":{"rendered":"3 \u0159e\u0161en\u00e9 p\u0159\u00edklady s transform\u00e1tory"},"content":{"rendered":"

Pro spr\u00e1vn\u00e9 pochopen\u00ed si p\u0159ipome\u0148me<\/a>, \u017ee prim\u00e1rn\u00ed c\u00edvka je vstupn\u00ed c\u00edvka<\/strong> transform\u00e1toru. Je to ta \u010d\u00e1st transform\u00e1toru, do kter\u00e9 je p\u0159iv\u00e1d\u011bno vstupn\u00ed st\u0159\u00eddav\u00e9 nap\u011bt\u00ed. V n\u00ed se d\u00edky st\u0159\u00eddav\u00e9mu proudu vytv\u00e1\u0159\u00ed st\u0159\u00eddav\u00e9 magnetick\u00e9 pole, kter\u00e9 se n\u00e1sledn\u011b indukuje ve sekund\u00e1rn\u00ed c\u00edvce, kde je nap\u011bt\u00ed p\u0159izp\u016fsobeno (zv\u00fd\u0161eno nebo sn\u00ed\u017eeno) podle pot\u0159eby.<\/p>\n

Prim\u00e1r – vstup
\nSekund\u00e1r – v\u00fdstup<\/p>\n

1) Transform\u00e1tor ke zv\u00fd\u0161en\u00ed nap\u011bt\u00ed<\/h2>\n

Elektrick\u00e1 s\u00ed\u0165 pou\u017e\u00edv\u00e1 transform\u00e1tor ke zv\u00fd\u0161en\u00ed nap\u011bt\u00ed z 230 V na 11 kV pro p\u0159enos energie na dlouhou vzd\u00e1lenost. Prim\u00e1rn\u00ed c\u00edvka m\u00e1 500 z\u00e1vit\u016f. Kolik z\u00e1vit\u016f m\u00e1 sekund\u00e1rn\u00ed c\u00edvka?<\/strong><\/p>\n

Pro v\u00fdpo\u010det z\u00e1vit\u016f sekund\u00e1rn\u00ed c\u00edvky vych\u00e1z\u00edme z toho, \u017ee mus\u00ed b\u00fdt stejn\u00fd jako pom\u011br nap\u011bt\u00ed.<\/em><\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

Po\u010det z\u00e1vit\u016f sekund\u00e1rn\u00ed c\u00edvky N2<\/sub> = 23 913<\/strong><\/p>\n

2) Transform\u00e1tor ke sn\u00ed\u017een\u00ed nap\u011bt\u00ed<\/h2>\n

Transform\u00e1tor sni\u017euje nap\u011bt\u00ed z 240 V na 5 V. Sekund\u00e1rn\u00ed c\u00edvka m\u00e1 40 z\u00e1vit\u016f. Kolik z\u00e1vit\u016f m\u00e1 prim\u00e1rn\u00ed c\u00edvka?<\/strong><\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

Sekund\u00e1rn\u00ed c\u00edvka (N2<\/sub>) m\u00e1 1 920 z\u00e1vit\u016f<\/strong><\/p>\n

3) P\u0159enos v\u00fdkonu s minim\u00e1ln\u00edmi ztr\u00e1tami<\/h2>\n

Transform\u00e1tor p\u0159en\u00e1\u0161\u00ed v\u00fdkon 50 kW. Na prim\u00e1rn\u00ed stran\u011b je nap\u011bt\u00ed 230 V, na sekund\u00e1rn\u00ed stran\u011b 11 kV. Jak\u00fd je proud na prim\u00e1rn\u00ed a sekund\u00e1rn\u00ed stran\u011b?<\/strong><\/p>\n

V\u00fdpo\u010det proudu. V\u00fdkon je d\u00e1n vztahem:<\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

Prim\u00e1rn\u00ed proud<\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

Sekund\u00e1rn\u00ed proud<\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

Proud na prim\u00e1rn\u00ed stran\u011b (na vstupu) je I1<\/sub> ≈ 217,39 A.<\/strong>
\nProud na sekund\u00e1rn\u00ed stran\u011b (na v\u00fdstupu) I2<\/sub> ≈ 4,55 A.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Pro spr\u00e1vn\u00e9 pochopen\u00ed si p\u0159ipome\u0148me, \u017ee prim\u00e1rn\u00ed c\u00edvka je vstupn\u00ed c\u00edvka transform\u00e1toru. Je to ta \u010d\u00e1st transform\u00e1toru, do kter\u00e9 je p\u0159iv\u00e1d\u011bno vstupn\u00ed st\u0159\u00eddav\u00e9 nap\u011bt\u00ed. V …. <\/p>\n","protected":false},"author":1,"featured_media":4616,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86,49],"tags":[23],"class_list":["post-5002","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektromagneticka-indukce","category-priklady-pro-9-rocnik","tag-reseny-priklad"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/5002","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5002"}],"version-history":[{"count":0,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/5002\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/media\/4616"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}