{"id":2169,"date":"2019-11-07T13:47:35","date_gmt":"2019-11-07T12:47:35","guid":{"rendered":"https:\/\/homebook.click\/blog\/?p=2169"},"modified":"2023-05-24T09:47:11","modified_gmt":"2023-05-24T07:47:11","slug":"stabilizator-napiecia-lm7805-cechy-porownanie-i-nie-tylko","status":"publish","type":"post","link":"https:\/\/homebook.click\/blog\/stabilizator-napiecia-lm7805-cechy-porownanie-i-nie-tylko\/","title":{"rendered":"Stabilizator napi\u0119cia LM7805: cechy, por\u00f3wnanie i nie tylko"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Czas czytania:<\/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=\"2169\" class=\"elementor elementor-2169\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-217ec9f3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"217ec9f3\" 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-4d1d8a6e\" data-id=\"4d1d8a6e\" 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-189f8192 elementor-widget elementor-widget-text-editor\" data-id=\"189f8192\" 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><\/p>\n<h2>Czym jest uk\u0142ad LM7805?<\/h2>\n<p><\/p>\n<p><\/p>\n<p>LM7805 jest bardzo popularnym liniowym regulatorem napi\u0119cia, kt\u00f3rego napi\u0119cie wyj\u015bciowe r\u00f3wne jest + 5 V. Jest to uk\u0142ad posiadaj\u0105cy trzy wyprowadzenia: wej\u015bcie, masa oraz wyj\u015bcie.<\/p>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-gallery aligncenter columns-1 is-cropped\">\n<ul class=\"blocks-gallery-grid\">\n<li class=\"blocks-gallery-item\">\n<figure><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"333\" class=\"wp-image-2172\" src=\"https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01-1024x333.jpg\" alt=\"\" data-id=\"2172\" data-full-url=\"https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01.jpg\" data-link=\"https:\/\/homebook.click\/blog\/?attachment_id=2172\" srcset=\"https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01-1024x333.jpg 1024w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01-300x98.jpg 300w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01-768x250.jpg 768w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01-640x208.jpg 640w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-01.jpg 1085w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p><\/p>\n<figcaption class=\"blocks-gallery-item__caption\">Schemat monta\u017cu oraz opis wyprowadze\u0144.<\/figcaption>\n<\/figure>\n<\/li>\n<\/ul>\n<\/figure>\n<p><\/p>\n<p><\/p>\n<h2>Ciekawostka<\/h2>\n<p><\/p>\n<p><\/p>\n<p>Jak zapewne zauwa\u017cy\u0142e\u015b dwie ostatnie cyfry nazwy 7805 pokrywaj\u0105 si\u0119 z warto\u015bci\u0105 napi\u0119cia wyj\u015bciowego. Nie przez przypadek! Stabilizator LM78XX jest cz\u0119\u015bci\u0105 rodziny regulator\u00f3w, gdzie XX oznacza warto\u015b\u0107 napi\u0119cia wyj\u015bciowego \ud83d\ude42 I tak np. dla stabilizatora <a href=\"https:\/\/homebook.click\/220-napiecie-wyjsciowe-12v\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"LM7812 (opens in a new tab)\" data-wpel-link=\"internal\"><b>LM7812<\/b><\/a> napi\u0119cie wyj\u015bciowe wynosi 12 V.<\/p>\n<p><\/p>\n<p><\/p>\n<h2>Parametry i por\u00f3wnanie<\/h2>\n<p><\/p>\n<p><\/p>\n<p>Najwa\u017cniejszymi (i oczywi\u015bcie nie wszystkimi) parametrami omawianego stabilizatora s\u0105:<\/p>\n<p><\/p>\n<p><\/p>\n<ul>\n<li>napi\u0119cie wyj\u015bciowe: 5 V (z dok\u0142adno\u015bci\u0105 do 2%),<\/li>\n<li>maksymalne napi\u0119cie wej\u015bciowe: 35 V,<\/li>\n<li>maksymalny pr\u0105d wyj\u015bciowy: 1,5 A,<\/li>\n<li>dropout voltage: 2 V.<\/li>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<p>Czym jest tajemniczy dropout voltage? Do\u015bwiadczeni elektronicy zapewne doskonale wiedz\u0105, jednak osoby zaczynaj\u0105ce dopiero przygod\u0119 z elektronik\u0105 niekoniecznie musz\u0105 posiada\u0107 tak\u0105 wiedz\u0119. Dropout voltage to nic innego jak minimalna r\u00f3\u017cnica warto\u015bci pomi\u0119dzy napi\u0119ciem jakim zasilamy stabilizator, a jego napi\u0119ciem wyj\u015bciowym, by regulator dzia\u0142a\u0142 poprawnie. Stabilizator\u00f3w liniowych (niestety) nie mo\u017cemy zasila\u0107 dowolnym napi\u0119ciem. Napi\u0119cie wej\u015bciowe musi by\u0107 odpowiednio wy\u017csze od wyj\u015bciowego. Naj\u0142atwiej przedstawi\u0107 t\u0105 zale\u017cno\u015b\u0107 prostym wzorem:<\/p>\n<p><\/p>\n<p><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"139\" height=\"45\" class=\"wp-image-2176\" src=\"https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm7805-wzor.png\" alt=\"\"><\/figure>\n<\/div>\n<p><\/p>\n<p><\/p>\n<p>Gdzie:<\/p>\n<p><\/p>\n<p><\/p>\n<ul>\n<li>Vi &#8211; napi\u0119cie wej\u015bciowe regulatora (zasilamy nim regulator),<\/li>\n<li>Vo &#8211; napi\u0119cie wyj\u015bciowe regulatora (w naszym przypadku 5 V),<\/li>\n<li>Vd &#8211; Dropout voltage (omawiany przez nas parametr, dost\u0119pny w ka\u017cdej nocie katalogowej).<\/li>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"793\" height=\"636\" class=\"wp-image-2177\" src=\"https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm-7805-nota-katalogowa.png\" alt=\"\" srcset=\"https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm-7805-nota-katalogowa.png 793w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm-7805-nota-katalogowa-300x241.png 300w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm-7805-nota-katalogowa-768x616.png 768w, https:\/\/homebook.click\/blog\/wp-content\/uploads\/2019\/11\/lm-7805-nota-katalogowa-640x513.png 640w\" sizes=\"(max-width: 793px) 100vw, 793px\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<p>W nocie katalogowej wida\u0107, \u017ce dla stabilizatora z rodziny <b><a href=\"https:\/\/homebook.click\/216-stabilizatory-napiecie-wyjsciowe-5v\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"LM7805 (opens in a new tab)\" data-wpel-link=\"internal\">LM7805<\/a> <\/b>dropout voltage wynosi 2 V. Zgodnie z powy\u017cszym wzorem napi\u0119cie wej\u015bciowe powinno mie\u0107 warto\u015b\u0107 minimum 7 V (5 V + 2 V). Widzimy wi\u0119c, \u017ce stabilizator\u00f3w liniowych nie zastosujemy w dowolnym projekcie, ale tu z pomoc\u0105 przychodz\u0105 stabilizatory LDO (Low-Dropout Regulator) lub stabilizatory impulsowe, kt\u00f3re poni\u017cej por\u00f3wnamy z liniowymi. Szerzej oba rodzaje regulator\u00f3w opiszemy w przysz\u0142o\u015bci \ud83d\ude09<\/p>\n<p><\/p>\n<p><\/p>\n<p><style>\ntd.tab1<br \/>{<br \/>background:#f5f5f5;<br \/>padding:10px;<br \/>width:33%;<br \/>}<\/p>\n<p>td.tab2<br \/>{<br \/>padding:10px;<br \/>border-bottom:1px solid #f5f5f5;<br \/>}<\/p>\n<\/style>\n<\/p><table style=\"width: 90%; text-align: center; margin: auto;\">\n<tbody>\n<tr>\n<td>&nbsp;<\/td>\n<td class=\"tab1\">Stabilizatory liniowe<\/td>\n<td class=\"tab1\">Stabilizatory impulsowe<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Elastyczno\u015b\u0107 architektury<\/td>\n<td class=\"tab2\">Buck<\/td>\n<td class=\"tab2\">Buck, Boost, Back-Boost<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Wydajno\u015b\u0107<\/td>\n<td class=\"tab2\">Niska &#8211; \u015brednia<\/td>\n<td class=\"tab2\">Wysoka<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Z\u0142o\u017cono\u015b\u0107 uk\u0142adu<\/td>\n<td class=\"tab2\">Niska<\/td>\n<td class=\"tab2\">\u015arednia &#8211; wysoka<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Koszt<\/td>\n<td class=\"tab2\">Niski<\/td>\n<td class=\"tab2\">\u015aredni &#8211; wysoki<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Szumy i zniekszta\u0142cenia sygna\u0142u wyj\u015bciowego<\/td>\n<td class=\"tab2\">Niskie<\/td>\n<td class=\"tab2\">\u015arednie &#8211; wysokie<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Zakres napi\u0119\u0107 wyj\u015bciowych<\/td>\n<td class=\"tab2\">W\u0105ski, zale\u017cny od napi\u0119cia wyj\u015bciowego i mo\u017cliwo\u015bci odprowadzania ciep\u0142a<\/td>\n<td class=\"tab2\">Szeroki<\/td>\n<\/tr>\n<tr>\n<td class=\"tab1\">Przyk\u0142ady<\/td>\n<td class=\"tab2\">LM7805, LM317<\/td>\n<td class=\"tab2\">LM3671<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/p>\n<p><\/p>\n<p class=\"margin-top:20px;\">Innym ciekawym stabilizatorem liniowym jest uk\u0142ad <a href=\"https:\/\/homebook.click\/stabilizatory-regulowane\/5262-stabilizator-lm317t-12-37v-tht-to220.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"LM317 (opens in a new tab)\" data-wpel-link=\"internal\"><b>LM317<\/b><\/a>. Dlaczego jest ciekawy? Ano dlatego, \u017ce jest to stabilizator z regulowanym napi\u0119ciem wyj\u015bciowym w zakresie od 1,2 do a\u017c 37 V. Mo\u017cliwo\u015b\u0107 regulacji napi\u0119cia obarczona jest jednak konieczno\u015bci\u0105 stosowania dodatkowych zewn\u0119trznych element\u00f3w (rezystory potrzebne do stworzenia dzielnika napi\u0119cia).<\/p>\n<p><\/p>\n<p><\/p>\n<h2>Alternatywa dla stabilizator\u00f3w<\/h2>\n<p><\/p>\n<p><\/p>\n<p>Alternatyw\u0105 dla stabilizator\u00f3w napi\u0119\u0107 takich jak LM7805 czy LM317 mo\u017ce by\u0107 ciekawa \u0142adowarka, kt\u00f3ra jest w stanie stabilizowa\u0107 napi\u0119cie na poziomie 5 V, maj\u0105c w zanadrzu kilka ciekawych funkcji.<\/p>\n<p><a style=\"background-color: #ffffff; font-size: 1rem;\" href=\"https:\/\/homebook.click\/akcesoria-do-paneli-slonecznych\/4424-lipo-riderpro-ladowarka-z-wejsciami-na-panele-sloneczne.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"LiPo RiderPro (opens in a new tab)\" data-wpel-link=\"internal\">LiPo RiderPro<\/a><span style=\"font-size: 1rem;\">, bo o niej mowa wyposa\u017cona jest w dwa z\u0142\u0105cza JST 2.0 i mo\u017ce s\u0142u\u017cy\u0107 jako \u0142adowarka do akumulator\u00f3w litowo polimerowych 1S 3,7 V. Co wi\u0119cej mo\u017ce to robi\u0107, korzystaj\u0105c z energii s\u0142onecznej, po podpi\u0119ciu do niej ogniwa fotowoltaicznego. Pozwala r\u00f3wnie\u017c zasila\u0107 urz\u0105dzenia poprzez gniazdo USB A napi\u0119ciem 5 V z maksymalnym poborem pr\u0105du na poziomie 1 A.<\/span><\/p>\n<p><\/p>\n<p><\/p>\n<p>Jak wida\u0107 kwestia regulowania napi\u0119cia, jego stabilizowania w uk\u0142adach to temat rzeka i mo\u017ce by\u0107 rozwi\u0105zany na r\u00f3\u017cne sposoby. M\u00f3wi\u0105c potocznie dzisiaj &#8220;lizn\u0119li\u015bmy&#8221; ten temat, ale wr\u00f3cimy do niego w przysz\u0142o\u015bci \ud83d\ude42 Czytelnik\u00f3w potrzebuj\u0105cych stabilizacji \ud83d\ude09 zapraszamy na <a href=\"https:\/\/homebook.click\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"nasz\u0105 stron\u0119 (opens in a new tab)\" data-wpel-link=\"internal\"><b>nasz\u0105 stron\u0119<\/b><\/a>, gdzie oferujemy szerok\u0105 gam\u0119 r\u00f3\u017cnych <a href=\"https:\/\/homebook.click\/14-regulatory-napiecia\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"stabilizator\u00f3w i przetwornic. (opens in a new tab)\" data-wpel-link=\"internal\"><b>stabilizator\u00f3w i przetwornic<\/b>.<\/a><\/p>\n<p><\/p>\n<p><\/p>\n<p>Zobacz <a href=\"https:\/\/homebook.click\/blog\/category\/elektronika\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\"><b>pozosta\u0142e <\/b><\/a>artyku\u0142y z serii Elektronika na naszym blogu!<\/p>\n<p><\/p>\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4e93596 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4e93596\" 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-2712a37\" data-id=\"2712a37\" 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-7dcef52 elementor-widget elementor-widget-text-editor\" data-id=\"7dcef52\" 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<div id=\"k-faq-accord\"><h2>Stabilizator napi\u0119cia LM7805 &#8211; FAQ<\/h2>\n    <div class=\"tabs\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/FAQPage\">\n        <div class=\"tab\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n            <input type=\"checkbox\" id=\"chck1\" \/><h3>\n                <label class=\"tab-label\" for=\"chck1\" itemprop=\"name\">LM7805 &#8211; Co to jest?\n                <\/label><\/h3>\n            <div class=\"tab-content\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                <div itemprop=\"text\">\n<p>\nCo to jest LM7805? To ciesz\u0105cy si\u0119 du\u017c\u0105 popularno\u015bci\u0105 zar\u00f3wno w\u015br\u00f3d pocz\u0105tkuj\u0105cych, jak i do\u015bwiadczonych elektronik\u00f3w liniowy regulator napi\u0119cia. Napi\u0119cie wyj\u015bciowe regulatora LM7805 wynosi +5 V. W uk\u0142adzie znajduj\u0105 si\u0119 trzy wyprowadzenia. Pierwsze z nich to wej\u015bcie, kolejne to masa, natomiast ostatnim jest wyj\u015bcie. Dwie ostatnie cyfry w nazwie LM7805 oznaczaj\u0105 warto\u015b\u0107 napi\u0119cia wyj\u015bciowego. W przypadku stabilizator\u00f3w o nazwie LM7812, dwie ostatnie cyfry, czyli 12 oznaczaj\u0105, \u017ce napi\u0119cie wyj\u015bciowe jest r\u00f3wne 12 V. Maksymalne napi\u0119cie wej\u015bciowe stabilizatora LM7805 wynosi 35 V. Z kolei maksymalny pr\u0105d wyj\u015bciowy to 1,5 A. Warto zaznaczy\u0107, \u017ce napi\u0119cie wyj\u015bciowe, czyli 5V jest podawane z 2% dok\u0142adno\u015bci\u0105.\n<\/p>\n                <\/div>\n            <\/div>\n        <\/div>\n        <div class=\"tab\" itemscope=\"\" itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n            <input type=\"checkbox\" id=\"chck2\" \/><h3>\n                <label class=\"tab-label\" for=\"chck2\" itemprop=\"name\">LM7805 &#8211; Do czego jest wykorzystywany?\n                <\/label><\/h3>\n            <div class=\"tab-content\" itemscope=\"\" itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                <div itemprop=\"text\">\n<p>\nRegulator napi\u0119cia LM7805 jest wykorzystywany m.in. do <a href=\"https:\/\/homebook.click\/162-zasilacze\" data-wpel-link=\"internal\">zasilaczy<\/a>, a tak\u017ce do r\u00f3\u017cnych projekt\u00f3w DIY, w kt\u00f3rych stabilny sygna\u0142 napi\u0119ciowy jest szczeg\u00f3lnie istotny. Kolejnym zastosowaniem LM7805 jest elektroniczny modu\u0142 steruj\u0105cy (ECU). Dodatkowo LM7805 jest odpowiedzialny za stabilny sygna\u0142 dla r\u00f3\u017cnych uk\u0142ad\u00f3w logicznych wymagaj\u0105cych do prawid\u0142owego dzia\u0142ania napi\u0119cia 5V+.\n<\/p>\n                <\/div>\n            <\/div>\n        <\/div>     \n    <\/div>\n<\/div>\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>Stabilizator LM7805 &#8211; sprawd\u017a jak dzia\u0142a i do czego s\u0142u\u017cy. Prosty poradnik o stabilizatorach dla ka\u017cdego.<\/p>\n","protected":false},"author":6,"featured_media":59610,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7],"tags":[147,165,163,162,159,160],"class_list":["post-2169","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektronika","tag-elektronika","tag-impulsowy","tag-ldo","tag-regulator","tag-regulator-napiecia","tag-stabilizator-napiecia"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stabilizator napi\u0119cia LM7805: cechy, por\u00f3wnanie i nie tylko - Botland<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/homebook.click\/blog\/stabilizator-napiecia-lm7805-cechy-porownanie-i-nie-tylko\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stabilizator napi\u0119cia LM7805: cechy, por\u00f3wnanie i nie tylko - Botland\" \/>\n<meta property=\"og:description\" content=\"Stabilizator LM7805 - sprawd\u017a jak dzia\u0142a i do czego s\u0142u\u017cy. 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