{"id":74298,"date":"2023-12-06T14:00:32","date_gmt":"2023-12-06T13:00:32","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/im3914-co-to-jest-dane-techniczne-cena-i-opinie\/"},"modified":"2026-04-08T11:02:41","modified_gmt":"2026-04-08T09:02:41","slug":"im3914-co-je-to-technicke-udaje-cena-a-nazory","status":"publish","type":"post","link":"https:\/\/botland.cz\/blog\/im3914-co-je-to-technicke-udaje-cena-a-nazory\/","title":{"rendered":"IM3914 – Co je to? Technick\u00e9 \u00fadaje, cena a n\u00e1zory"},"content":{"rendered":"\u010cas \u010dten\u00ed:<\/span> 3<\/span> min.<\/span><\/span>\t\t
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IM3914<\/strong> je elektronick\u00fd (monolitick\u00fd) integrovan\u00fd obvod<\/strong><\/a> pro ovl\u00e1d\u00e1n\u00ed LED diod<\/strong> v krytu DIP18.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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IM3914 - co to je?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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M3914<\/span> je integrovan\u00fd obvod<\/span><\/a>, kter\u00fd umo\u017e\u0148uje ovl\u00e1d\u00e1n\u00ed diod LED<\/span><\/a> a p\u0159ipojen\u00fdch displej\u016f LCD<\/span><\/a>. Dal\u0161\u00ed aplikac\u00ed je \u0159\u00edzen\u00ed vakuov\u00fdch fluorescen\u010dn\u00edch displej\u016f<\/span>. To znamen\u00e1, \u017ee pro \u010dasto pou\u017e\u00edvan\u00fd VU m\u011b\u0159i\u010d<\/span> lze pou\u017e\u00edt monolitick\u00fd \u010dip IM3914<\/span>. Zobrazen\u00ed lze prov\u00e9st jak ve sloupcov\u00e9m, tak v bodov\u00e9m re\u017eimu. Monolitick\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed umo\u017e\u0148uje v\u00fdvoj r\u016fzn\u00fdch typ\u016f LCD displej\u016f<\/span>.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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P\u0159edstaven\u00fd monolitick\u00fd obvod je vybaven<\/span> 10 svorkami<\/strong> umo\u017e\u0148uj\u00edc\u00edmi p\u0159ipojen\u00ed <\/span>10 LED diod.<\/strong> Jeden v\u00fdvod je ur\u010den ke zm\u011bn\u011b zobrazen\u00ed z pohybliv\u00e9ho bodu na standardn\u00ed sloupcov\u00fd graf. <\/span> <\/p>\n

Proud dod\u00e1van\u00fd \u00fasporn\u00fdm LED diod\u00e1m je pln\u011b nastaviteln\u00fd a programovateln\u00fd. V praxi to znamen\u00e1, \u017ee rezistory nejsou pot\u0159ebn\u00e9. \u010cip IM3914 umo\u017e\u0148uje, aby cel\u00fd syst\u00e9m fungoval <\/span>p\u0159i velmi n\u00edzk\u00fdch nap\u011bt\u00edch<\/strong> (m\u00e9n\u011b ne\u017e 3 V).<\/span><\/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

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LED ovlada\u010de - co se o nich vyplat\u00ed v\u011bd\u011bt?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Ovlada\u010de <\/strong><\/a>ur\u010den\u00e9 mimo jin\u00e9 k \u0159\u00edzen\u00ed provozu sv\u011bteln\u00fdch diod (LED)<\/strong>, umo\u017e\u0148uj\u00ed nejen zap\u00edn\u00e1n\u00ed, ale i vyp\u00edn\u00e1n\u00ed a regulaci jasu. V p\u0159\u00edpad\u011b RGB LED diod je tak\u00e9 mo\u017en\u00e9 \u0159\u00eddit barvy. Pomoc\u00ed ovlada\u010d\u016f lze vytvo\u0159it prakticky jakoukoli interi\u00e9rovou sv\u011btelnou sc\u00e9nu.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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IM3914 - Technick\u00e9 specifikace<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Integrovan\u00fd obvod IM3914<\/strong> je vybaven intern\u00edm referen\u010dn\u00edm nap\u011bt\u00edm v rozsahu od 1,2 V do 12 V<\/strong>. Vstupy obvodu pracuj\u00ed sm\u011brem dol\u016f k zemi. Intenzita proudu se pohybuje v rozmez\u00ed od 2 mA do 30 mA<\/strong>. Vstupy integrovan\u00e9ho obvodu IM3914 jsou navr\u017eeny tak, aby bez po\u0161kozen\u00ed odolaly nap\u011bt\u00ed \u00b135 V<\/strong>.<\/p>\n

Ovlada\u010d LED, p\u0159esn\u011bji \u0159e\u010deno jeho v\u00fdstup, m\u016f\u017ee b\u00fdt \u0159\u00edzen proudem. Krom\u011b toho se vyzna\u010duj\u00ed otev\u0159en\u00fdmi kolektory. Popsan\u00fd obvod je vybaven vestav\u011bn\u00fdm (10stup\u0148ov\u00fdm) d\u011bli\u010dem. V\u0161echny v\u00fdstupy jsou kompatibiln\u00ed s CMOS<\/strong> i TTL<\/strong>. Integrovan\u00fd obvod IM3914 je vybaven omezenou ochranou proti elektrostatick\u00e9mu v\u00fdboji ESD<\/strong> (Electrostatic Discharge). Pokud je t\u0159eba monolitick\u00fd syst\u00e9m IM3914 skladovat, m\u011bla by se k tomuto \u00fa\u010delu pou\u017e\u00edt vodiv\u00e1 p\u011bna. Takov\u00e9 \u0159e\u0161en\u00ed mimo jin\u00e9 zaji\u0161\u0165uje br\u00e1ny MOS p\u0159ed po\u0161kozen\u00edm. Syst\u00e9m by m\u011bl b\u00fdt nav\u00edc zaji\u0161t\u011bn p\u0159i p\u0159eprav\u011b a manipulaci. P\u0159i mont\u00e1\u017ei se doporu\u010duje pou\u017e\u00edvat ESD podlo\u017eky<\/strong><\/a>, ESD rukavice<\/strong><\/a> a ESD pinzetu.<\/strong><\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Dal\u0161\u00ed technick\u00e9 parametry<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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P\u0159\u00edkon \u010dipu IM3914 je 1365 mW<\/strong>. Rozsah provozn\u00edch teplot je od -55 \u2103 do +150 \u2103<\/strong>. Maxim\u00e1ln\u00ed nap\u00e1jec\u00ed nap\u011bt\u00ed je 25 V<\/strong>. Nap\u011bt\u00ed na v\u00fdstupn\u00edch ovlada\u010d\u00edch je 25 V<\/strong>. P\u0159ep\u011bt\u00ed vstupn\u00edho sign\u00e1lu je zase \u00b135 V<\/strong>. Dal\u0161\u00edm technick\u00fdm parametrem je referen\u010dn\u00ed z\u00e1t\u011b\u017eov\u00fd proud, kter\u00fd \u010din\u00ed 10 mA.<\/strong> P\u0159i p\u00e1jen\u00ed v\u00fdrobce obvodu doporu\u010duje nep\u0159ekra\u010dovat teplotu 260 \u2103<\/strong>. Maxim\u00e1ln\u00ed doba p\u00e1jen\u00ed by nem\u011bla b\u00fdt del\u0161\u00ed ne\u017e 10 sekund<\/strong>. V opa\u010dn\u00e9m p\u0159\u00edpad\u011b hroz\u00ed po\u0161kozen\u00ed monolitick\u00e9ho syst\u00e9mu.<\/p>\n

Integrovan\u00fd obvod IM3914 je ur\u010den pro pr\u016fchoz\u00ed mont\u00e1\u017e THT<\/strong> (Through-Hole Technology), tak\u017ee je vhodn\u00fd pro amat\u00e9rsk\u00e9 kutily. Pro p\u00e1jen\u00ed se pou\u017e\u00edv\u00e1 standardn\u00ed p\u00e1je\u010dka<\/strong><\/a>, deska plo\u0161n\u00fdch spoj\u016f PSB<\/strong><\/a> a p\u0159\u00edslu\u0161enstv\u00ed pro p\u00e1jen\u00ed<\/strong><\/a>. Pr\u016fchoz\u00ed mont\u00e1\u017e zahrnuje p\u0159esunut\u00ed vodi\u010d\u016f (no\u017ei\u010dek) na druhou stranu desky plo\u0161n\u00fdch spoj\u016f a jejich p\u0159ip\u00e1jen\u00ed k p\u00e1jec\u00edm pol\u00edm. Pole zaru\u010duj\u00ed rychlou a snadnou instalaci no\u017eek. V\u0161echna pole se p\u0159ipojuj\u00ed k vodiv\u00fdm drah\u00e1m. Posledn\u00edm krokem je od\u0159\u00edznut\u00ed p\u0159ebyte\u010dn\u00fdch vodi\u010d\u016f.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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IM3914 - n\u00e1zory<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Integrovan\u00fd obvod IM3914<\/strong> z\u00edskal pozitivn\u00ed ohlasy od za\u010d\u00ednaj\u00edc\u00edch i zku\u0161en\u00fdch elektronik\u016f a dom\u00e1c\u00edch kutil\u016f d\u00edky sv\u00e9 univerz\u00e1ln\u00ed pou\u017eitelnosti<\/strong>. Jeden obvod lze pou\u017e\u00edt k ovl\u00e1d\u00e1n\u00ed LED diod, LCD displej\u016f nebo elektronek.<\/p>\n

Dal\u0161\u00edmi d\u016fvody, pro\u010d m\u00e1 popsan\u00fd integrovan\u00fd obvod mezi u\u017eivateli dobr\u00fd ohlas, jsou jeho \u0161irok\u00fd rozsah pracovn\u00edch teplot a stabiln\u00ed a spolehliv\u00fd provoz.<\/strong> Krom\u011b toho se IM3914 vyzna\u010duje snadnou mont\u00e1\u017e\u00ed a omezen\u00fdm po\u010dtem dal\u0161\u00edch komponent, kter\u00e9 jsou nutn\u00e9 k vytvo\u0159en\u00ed kompletn\u00edho ovlada\u010de LED nebo LCD displeje.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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IM3914 - cena<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Cena integrovan\u00e9ho obvodu IM3914 z\u00e1vis\u00ed na konkr\u00e9tn\u00edm dodavateli, po\u010dtu objednan\u00fdch elektronick\u00fdch sou\u010d\u00e1stek a dal\u0161\u00edch p\u0159epravn\u00edch n\u00e1kladech. Pokud si objedn\u00e1te pouze jeden \u010dip IM3914, m\u011bli byste po\u010d\u00edtat s cenou kolem 60 korun<\/strong>.<\/p>\n

Za relativn\u011b n\u00edzkou cenu z\u00edsk\u00e1 u\u017eivatel univerz\u00e1ln\u00ed a osv\u011bd\u010den\u00fd integrovan\u00fd obvod, kter\u00fd je ide\u00e1ln\u00ed pro sestaven\u00ed jednoduch\u00e9ho ovlada\u010de LED nebo LCD displeje. Rozlo\u017een\u00ed je skv\u011bl\u00e9 pro osv\u011btlovac\u00ed DIY projekty.<\/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":"

IM3914 je elektronick\u00fd (monolitick\u00fd) integrovan\u00fd obvod pro ovl\u00e1d\u00e1n\u00ed LED diod v pouzd\u0159e DIP18.<\/p>\n","protected":false},"author":22,"featured_media":73712,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,179],"tags":[],"class_list":["post-74298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektronika","category-kompendium"],"acf":[],"yoast_head":"\nIM3914 - Co je to? Technick\u00e9 \u00fadaje, cena a n\u00e1zory - Botland<\/title>\n<meta name=\"description\" content=\"Integrovan\u00fd obvod IM3914 slou\u017e\u00ed k ovl\u00e1d\u00e1n\u00ed LED a LCD displej\u016f. Nejd\u016fle\u017eit\u011bj\u0161\u00ed informace, technick\u00e9 \u00fadaje, recenze a cena.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/botland.cz\/blog\/im3914-co-je-to-technicke-udaje-cena-a-nazory\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IM3914 - Co je to? Technick\u00e9 \u00fadaje, cena a n\u00e1zory - Botland\" \/>\n<meta property=\"og:description\" content=\"Integrovan\u00fd obvod IM3914 slou\u017e\u00ed k ovl\u00e1d\u00e1n\u00ed LED a LCD displej\u016f. 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