{"id":71580,"date":"2023-10-06T14:00:13","date_gmt":"2023-10-06T12:00:13","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/komparator-co-to-jest-i-jak-dziala\/"},"modified":"2026-04-08T11:05:00","modified_gmt":"2026-04-08T09:05:00","slug":"komparator-co-to-je-a-jak-funguje","status":"publish","type":"post","link":"https:\/\/botland.cz\/blog\/komparator-co-to-je-a-jak-funguje\/","title":{"rendered":"Kompar\u00e1tor &#8211; co to je a jak funguje?"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u010cas \u010dten\u00ed:<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"71580\" class=\"elementor elementor-71580 elementor-67664\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9f6c205 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9f6c205\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c3522a7\" data-id=\"c3522a7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8566f8c elementor-widget elementor-widget-text-editor\" data-id=\"8566f8c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Kompar\u00e1tory jsou obvody pou\u017e\u00edvan\u00e9 v mnoha oblastech elektroniky, kter\u00e9 umo\u017e\u0148uj\u00ed porovn\u00e1vat nap\u011bt\u00ed nebo bin\u00e1rn\u00ed \u010d\u00edsla. Jak funguj\u00ed a jak\u00e9 jsou jejich typy?<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59b1089 elementor-widget elementor-widget-heading\" data-id=\"59b1089\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Co je kompar\u00e1tor?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bd1bbbe elementor-widget elementor-widget-text-editor\" data-id=\"bd1bbbe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/botland.cz\/93-komparatory\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\"><strong>Kompar\u00e1tor<\/strong><\/a> je mal\u00fd <a href=\"https:\/\/botland.cz\/21-integrovane-obvody\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\"><strong>integrovan\u00fd obvod<\/strong><\/a>, kter\u00fd umo\u017e\u0148uje rychl\u00e9 a snadn\u00e9 porovn\u00e1n\u00ed dvou hodnot. V z\u00e1vislosti na vlastnostech dan\u00e9ho \u0159e\u0161en\u00ed bude m\u011b\u0159enou hodnotou <strong>nap\u011bt\u00ed nebo dvojice bin\u00e1rn\u00edch \u010d\u00edsel<\/strong> &#8211; v prvn\u00edm p\u0159\u00edpad\u011b se pou\u017e\u00edvaj\u00ed <strong>analogov\u00e9<\/strong> kompar\u00e1tory a ve druh\u00e9m<strong> digit\u00e1ln\u00ed<\/strong> kompar\u00e1tory. D\u016fle\u017eit\u00e9 je, \u017ee d\u00edky pou\u017eit\u00ed kompar\u00e1toru nen\u00ed nutn\u00e9 prov\u00e1d\u011bt dv\u011b samostatn\u00e1 m\u011b\u0159en\u00ed. V\u00fdstup z\u00e1vis\u00ed na rozd\u00edlu nap\u011bt\u00ed mezi vstupy nebo na vztahu mezi \u010d\u00edsly.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-184c194 elementor-widget elementor-widget-heading\" data-id=\"184c194\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Jak je kompar\u00e1tor sestaven?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-cf1ef92 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cf1ef92\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3d0aeea\" data-id=\"3d0aeea\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3d785dd elementor-widget elementor-widget-text-editor\" data-id=\"3d785dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>V z\u00e1vislosti na vlastnostech konkr\u00e9tn\u00edho \u0159e\u0161en\u00ed se kompar\u00e1tory mohou li\u0161it konstrukc\u00ed. Pro porovn\u00e1n\u00ed bin\u00e1rn\u00edch \u010d\u00edsel jsou mal\u00e9 <a href=\"https:\/\/botland.cz\/318-logicke-obvody\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\"><strong>logick\u00e9 obvody<\/strong><\/a> &#8211; nejb\u011b\u017en\u011bj\u0161\u00edm p\u0159\u00edkladem je hradlo <strong>XNOR<\/strong>, kter\u00e9 d\u00e1v\u00e1 na v\u00fdstupu kladn\u00fd sign\u00e1l pouze tehdy, pokud jsou oba vstupy stejn\u00e9. <\/p>\n<p>V p\u0159\u00edpad\u011b analogov\u00fdch kompar\u00e1tor\u016f je z\u00e1kladn\u00ed sou\u010d\u00e1stkou <strong>diferenci\u00e1ln\u00ed zesilova\u010d<\/strong>, kter\u00fd se obvykle skl\u00e1d\u00e1 z n\u011bkolika tranzistor\u016f nebo jin\u00fdch aktivn\u00edch prvk\u016f, kter\u00e9 jsou zodpov\u011bdn\u00e9 za porovn\u00e1v\u00e1n\u00ed dvou nap\u011bt\u00ed. V obvodu je tak\u00e9 <strong>v\u00fdstupn\u00ed zesilova\u010d<\/strong>, jeho\u017e \u00fakolem je odpov\u00eddaj\u00edc\u00edm zp\u016fsobem zes\u00edlit sign\u00e1l a vytvo\u0159it kone\u010dn\u00fd v\u00fdsledek m\u011b\u0159en\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-815714e\" data-id=\"815714e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3f24fb4 elementor-widget elementor-widget-image\" data-id=\"3f24fb4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2023\/10\/04929_1a.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"04929_1a\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NzEzNjksInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmN6XC9ibG9nXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8xMFwvMDQ5MjlfMWEuanBnIn0%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"634\" src=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/04929_1a-1024x811.jpg\" class=\"attachment-large size-large wp-image-71369\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/04929_1a-1024x811.jpg 1024w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/04929_1a-300x238.jpg 300w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/04929_1a-768x608.jpg 768w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/04929_1a.jpg 1080w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Jednokan\u00e1lov\u00fd kompar\u00e1tor LM311P.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1bbbd4 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"b1bbbd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.cz\/komparatory\/4929-jednokanalovy-komparator-lm311p-5904422356958.html\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">POD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c80ff0 elementor-widget elementor-widget-spacer\" data-id=\"8c80ff0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bc2010 elementor-widget elementor-widget-text-editor\" data-id=\"7bc2010\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Kompar\u00e1tor nap\u011bt\u00ed m\u00e1 <strong>nejm\u00e9n\u011b dva vstupy<\/strong>. Jeden je ozna\u010den znam\u00e9nkem <strong>plus<\/strong> a jedn\u00e1 se o <strong>neinvertuj\u00edc\u00ed vstup<\/strong>, zat\u00edmco druh\u00fd je <strong>invertuj\u00edc\u00ed vstup s minusem<\/strong>. Prvn\u00ed je p\u0159ipojen k <strong>porovn\u00e1van\u00e9mu<\/strong> <strong>nap\u011bt\u00ed<\/strong> a druh\u00fd k <strong>referen\u010dn\u00edmu nap\u011bt\u00ed<\/strong>, kter\u00e9 je referen\u010dn\u00edm bodem pro m\u011b\u0159en\u00ed. Ka\u017ed\u00fd kompar\u00e1tor tak\u00e9 vy\u017eaduje <strong>nap\u00e1jen\u00ed<\/strong>, aby bylo zaji\u0161t\u011bno spr\u00e1vn\u00e9 fungov\u00e1n\u00ed v\u0161ech sou\u010d\u00e1st\u00ed za\u0159\u00edzen\u00ed. Dal\u0161\u00edmi sou\u010d\u00e1stmi mohou b\u00fdt mimo jin\u00e9 <strong><a href=\"https:\/\/botland.cz\/103-rotacni-posuvne-a-linearni-potenciometry\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">potenciometry<\/a>, filtry nebo kompenza\u010dn\u00ed obvody<\/strong>.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-748fb40 elementor-widget elementor-widget-heading\" data-id=\"748fb40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Kompar\u00e1tor - princip \u010dinnosti<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-370f173 elementor-widget elementor-widget-text-editor\" data-id=\"370f173\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nap\u011b\u0165ov\u00fd kompar\u00e1tor funguje velmi jednodu\u0161e. Jeho \u010dinnost lze omezit na jedin\u00fd princip: <strong>nap\u011bt\u00ed na v\u00fdstupu obvodu z\u00e1vis\u00ed na rozd\u00edlu nap\u011bt\u00ed mezi dv\u011bma vstupy<\/strong>. Z hlediska v\u00fdsledku je t\u0159eba zm\u00ednit <strong>n\u00edzk\u00e9 a vysok\u00e9 stavy<\/strong>, kter\u00e9 se objev\u00ed na v\u00fdstupu p\u0159i spln\u011bn\u00ed ur\u010dit\u00fdch podm\u00ednek.<\/p>\n<p>O <strong>vysok\u00e9m<\/strong> stavu na v\u00fdstupu obvodu hovo\u0159\u00edme tehdy, kdy\u017e se nap\u011bt\u00ed bl\u00ed\u017e\u00ed nap\u00e1jec\u00edmu nap\u011bt\u00ed. Tato situace nastane, pokud je nap\u011bt\u00ed na neinvertuj\u00edc\u00edm vstupu, kter\u00e9 se m\u011b\u0159\u00ed vzhledem k zemi syst\u00e9mu, v\u011bt\u0161\u00ed ne\u017e hodnota na invertuj\u00edc\u00edm vstupu. Naproti tomu <strong>n\u00edzk\u00fd<\/strong> stav nast\u00e1v\u00e1, kdy\u017e je nap\u011bt\u00ed na neinvertuj\u00edc\u00edm vstupu ni\u017e\u0161\u00ed ne\u017e na invertuj\u00edc\u00edm vstupu.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ab4a71 elementor-widget elementor-widget-heading\" data-id=\"0ab4a71\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Jak\u00e9 jsou typy kompar\u00e1tor\u016f nap\u011bt\u00ed?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2aba65e elementor-widget elementor-widget-text-editor\" data-id=\"2aba65e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Z\u00e1kladn\u00ed d\u011blen\u00ed kompar\u00e1tor\u016f rozli\u0161uje digit\u00e1ln\u00ed a analogov\u00e9 p\u0159\u00edstroje, kter\u00e9 se pou\u017e\u00edvaj\u00ed k porovn\u00e1v\u00e1n\u00ed bin\u00e1rn\u00edch \u010d\u00edsel a nap\u011bt\u00ed. To v\u0161ak nen\u00ed v\u0161e &#8211; kompar\u00e1tory nap\u011bt\u00ed se d\u00e1le d\u011bl\u00ed na n\u011bkolik typ\u016f, kter\u00e9 se li\u0161\u00ed konstrukc\u00ed a c\u00edlov\u00fdm pou\u017eit\u00edm. Mezi nej\u010dast\u011bji pou\u017e\u00edvan\u00e9 typy pat\u0159\u00ed:<\/p>\n<ul style=\"font-size: 16px; background-color: #ffffff;\">\n<li style=\"font-size: 16px;\"><strong>Diferenci\u00e1ln\u00ed kompar\u00e1tory<\/strong> &#8211; z\u00e1kladn\u00ed kompar\u00e1tory, jejich\u017e princip \u010dinnosti je zalo\u017een na porovn\u00e1v\u00e1n\u00ed rozd\u00edlu nap\u011bt\u00ed na jejich vstupech;<\/li>\n<li style=\"font-size: 16px;\"><strong>Kompar\u00e1tory s vnit\u0159n\u00edm referen\u010dn\u00edm nap\u011bt\u00edm<\/strong> &#8211; vyzna\u010duj\u00ed se vestav\u011bn\u00fdm referen\u010dn\u00edm nap\u011bt\u00edm na invertuj\u00edc\u00edm vstupu, tak\u017ee je lze pou\u017e\u00edt v\u0161ude tam, kde je po\u017eadov\u00e1na konstantn\u00ed referen\u010dn\u00ed hodnota;<\/li>\n<li style=\"font-size: 16px;\"><strong>kompar\u00e1tory s extern\u00edm referen\u010dn\u00edm nap\u011bt\u00edm<\/strong> &#8211; referen\u010dn\u00ed nap\u011bt\u00ed je kompar\u00e1tor\u016fm dod\u00e1v\u00e1no zven\u010d\u00ed, nap\u0159. pomoc\u00ed potenciometru;<\/li>\n<li style=\"font-size: 16px;\"><strong>Hysterezn\u00ed kompar\u00e1tory<\/strong> &#8211; syst\u00e9my, kter\u00e9 vyu\u017e\u00edvaj\u00ed jevu hystereze k zaji\u0161t\u011bn\u00ed v\u011bt\u0161\u00ed stability;<\/li>\n<li style=\"font-size: 16px;\"><strong>kompar\u00e1tory s rychlou odezvou<\/strong> &#8211; vyzna\u010duj\u00ed se t\u00e9m\u011b\u0159 okam\u017eit\u00fdm obdr\u017een\u00edm v\u00fdsledku. Pou\u017e\u00edvaj\u00ed se v syst\u00e9mech, kde je vy\u017eadov\u00e1na co nejvy\u0161\u0161\u00ed rychlost zpracov\u00e1n\u00ed.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9d9dbe elementor-widget elementor-widget-spacer\" data-id=\"c9d9dbe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59d9a3e elementor-widget elementor-widget-heading\" data-id=\"59d9a3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Hystereze v kompar\u00e1torech - co stoj\u00ed za to o n\u00ed v\u011bd\u011bt?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1d7eca7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1d7eca7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f447a13\" data-id=\"f447a13\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cfac0be elementor-widget elementor-widget-spacer\" data-id=\"cfac0be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f56c518 elementor-widget elementor-widget-image\" data-id=\"f56c518\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2023\/10\/00177_2.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"00177_2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NzEzNzMsInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmN6XC9ibG9nXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8xMFwvMDAxNzdfMi5qcGcifQ%3D%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"537\" src=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/00177_2-1024x687.jpg\" class=\"attachment-large size-large wp-image-71373\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/00177_2-1024x687.jpg 1024w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/00177_2-300x201.jpg 300w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/00177_2-768x516.jpg 768w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/10\/00177_2.jpg 1080w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Analogov\u00fd kompar\u00e1tor LM339 - THT - 5ks.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-796b980 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"796b980\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.cz\/komparatory\/177-analogovy-komparator-lm339-tht-5-ks-5904422355425.html\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">POD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-ecc964e\" data-id=\"ecc964e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-af3c89b elementor-widget elementor-widget-text-editor\" data-id=\"af3c89b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>N\u011bkter\u00e9 kompar\u00e1tory vyu\u017e\u00edvaj\u00ed jevu <strong>hystereze<\/strong>, tj. zpo\u017ed\u011bn\u00ed zm\u011bn na v\u00fdstupu syst\u00e9mu v\u016f\u010di zm\u011bn\u00e1m na vstupu. Jeho \u00fakolem je <strong>minimalizovat tzv. v\u00fdstupn\u00ed blik\u00e1n\u00ed<\/strong>,ke kter\u00e9mu doch\u00e1z\u00ed, kdy\u017e se nap\u011bt\u00ed na vstupech bl\u00ed\u017e\u00ed prahov\u00e9 hodnot\u011b. P\u0159i pou\u017eit\u00ed hystereze se zav\u00e1d\u00ed dal\u0161\u00ed prahov\u00e9 nap\u011bt\u00ed, kter\u00e9 mus\u00ed b\u00fdt p\u0159ekro\u010deno, aby se v\u00fdstup kompar\u00e1toru zm\u011bnil.<\/p>\n<p>Hystereze tedy zav\u00e1d\u00ed ur\u010dit\u00fd rozd\u00edl nap\u011bt\u00ed mezi hodnotami zapnuto a vypnuto, kter\u00e9 p\u0159edstavuj\u00ed p\u0159\u00edslu\u0161n\u00e9 horn\u00ed a doln\u00ed prahov\u00e9 hodnoty. Rozd\u00edl mezi nimi je tzv. <strong>oblast hystereze.<\/strong> P\u0159\u00edtomnost hystereze v kompar\u00e1torech minimalizuje vliv v\u00fdkyv\u016f na vstupech, kter\u00e9 jsou natolik mal\u00e9, \u017ee by nem\u011bly zm\u011bnit stav v\u00fdstupu obvodu. D\u00edky tomu se m\u016f\u017eete spolehnout na maxim\u00e1ln\u00ed stabilitu p\u0159\u00edstroje a spolehliv\u00e9 m\u011b\u0159en\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d98b41 elementor-widget elementor-widget-text-editor\" data-id=\"4d98b41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Hysterezn\u00ed kompar\u00e1tory<\/strong> se nej\u010dast\u011bji pou\u017e\u00edvaj\u00ed v p\u0159\u00edpadech, kdy je vstupn\u00ed sign\u00e1l velmi n\u00e1chyln\u00fd na ru\u0161en\u00ed, \u0161um nebo oscilace. Jedn\u00e1 se o faktory, kter\u00e9 se mohou vyskytnout v r\u016fzn\u00fdch elektronick\u00fdch syst\u00e9mech v z\u00e1vislosti na jejich konstrukci a pou\u017eit\u00ed, a proto se jedn\u00e1 o syst\u00e9my, kter\u00e9 stoj\u00ed za zv\u00e1\u017een\u00ed bez ohledu na situaci.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cb8a340 elementor-widget elementor-widget-heading\" data-id=\"cb8a340\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Kde se pou\u017e\u00edvaj\u00ed kompar\u00e1tory?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d7283aa elementor-widget elementor-widget-text-editor\" data-id=\"d7283aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Kompar\u00e1tory nap\u011bt\u00ed jsou univerz\u00e1ln\u00ed za\u0159\u00edzen\u00ed, kter\u00e1 se pou\u017e\u00edvaj\u00ed p\u0159edev\u0161\u00edm v syst\u00e9mech, kde je t\u0159eba <strong>p\u0159ev\u00e9st analogov\u00fd sign\u00e1l na bin\u00e1rn\u00ed.<\/strong> Pou\u017e\u00edvaj\u00ed se mimo jin\u00e9 v \u0159\u00eddic\u00edch syst\u00e9mech, detekci prahov\u00fdch hodnot, zpracov\u00e1n\u00ed sign\u00e1l\u016f, vstupn\u00edch a v\u00fdstupn\u00edch rozhran\u00edch, jako\u017e i v syst\u00e9mech alarm\u016f a m\u011b\u0159en\u00ed. Digit\u00e1ln\u00ed kompar\u00e1tory naproti tomu umo\u017e\u0148uj\u00ed rychl\u00e9 porovn\u00e1n\u00ed dvou \u010d\u00edsel pomoc\u00ed n\u011bkolika jednoduch\u00fdch, mal\u00fdch prvk\u016f, co\u017e mimo jin\u00e9 umo\u017e\u0148uje \u00faspora m\u00edsta a zdroj\u016f v mal\u00fdch elektronick\u00fdch syst\u00e9mech.<\/p>\n<p>P\u0159\u00edkladem aplikac\u00ed kompar\u00e1tor\u016f jsou<strong><a href=\"https:\/\/botland.cz\/139-reflexni-senzory\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\"> reflexn\u00ed senzory pro<\/a> mobiln\u00ed roboty<\/strong>. Dal\u0161\u00ed, o n\u011bco b\u011b\u017en\u011bj\u0161\u00ed aplikac\u00ed jsou <strong>termostaty<\/strong>. Pomoc\u00ed nap\u011b\u0165ov\u00fdch kompar\u00e1tor\u016f lze snadno vytv\u00e1\u0159et i jin\u00e9 typy regul\u00e1tor\u016f fyzik\u00e1ln\u00edch veli\u010din &#8211; v tomto p\u0159\u00edpad\u011b budete pot\u0159ebovat dal\u0161\u00ed senzor, kter\u00fd p\u0159ev\u00e1d\u00ed jinou hodnotu (nap\u0159. hluk, sv\u011btlo nebo hladinu kapaliny) na nap\u011bt\u00ed. Oba kompar\u00e1tory a mnoho dal\u0161\u00edch u\u017eite\u010dn\u00fdch obvod\u016f najdete v obchodech s robotikou a elektronikou &#8211; pod\u00edvejte se na str\u00e1nky <a href=\"https:\/\/botland.cz\/\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\"><strong>Botland.<\/strong><\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Kompar\u00e1tory jsou obvody pou\u017e\u00edvan\u00e9 v mnoha oblastech elektroniky, kter\u00e9 umo\u017e\u0148uj\u00ed porovn\u00e1vat nap\u011bt\u00ed nebo bin\u00e1rn\u00ed \u010d\u00edsla. Jak funguj\u00ed a jak\u00e9 jsou jejich typy?<\/p>\n","protected":false},"author":22,"featured_media":71377,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[548,549],"tags":[],"class_list":["post-71580","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektronika-cs","category-kompendium-cs"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kompar\u00e1tor - co to je a jak funguje? - Botland<\/title>\n<meta name=\"description\" content=\"Co jsou kompar\u00e1tory a k \u010demu se pou\u017e\u00edvaj\u00ed? 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