{"id":1367,"date":"2014-04-06T21:16:01","date_gmt":"2014-04-06T19:16:01","guid":{"rendered":"http:\/\/www.dainile.lt\/?p=1367"},"modified":"2015-11-03T13:39:38","modified_gmt":"2015-11-03T11:39:38","slug":"taimeris-nuo-0-iki-5-min","status":"publish","type":"post","link":"https:\/\/www.dclabs.lt\/dainiaus\/taimeris-nuo-0-iki-5-min\/","title":{"rendered":"Taimeris nuo 0 iki 3 min."},"content":{"rendered":"<p>Chm, pasirodo nera\u0161iau jau 2 m\u0117nesius. Kaip greitai b\u0117ga laikas (netik\u0161a). Bet dabar k\u016brybin\u0117 kriz\u0117, plius \u0161iaip darb\u0173 visoki\u0173 atsirado &#8211; n\u0117ra kada. Prad\u0117ti projektai laukia (ypa\u010d CNC stakl\u0117s), o daryt n\u0117ra kada. Kad b\u016bt\u0173 k\u0105 skaityti \u012fmetu vien\u0105 i\u0161 senesni\u0173 projektuk\u0173. Ka\u017ekokiam reikalui darbe prisireik\u0117 atjungti apkrov\u0105 po tam tikro laiko nuo maitinimo pajungimo. Naudojome automobiliuose, tai viskas dirba tik su 12V. Nors apkrov\u0105, \u017einoma, galima jungin\u0117ti kitoki\u0173 volta\u017e\u0173 &#8211; priklausomai nuo rel\u0117s. Schema elementari su vis dar populiaria ir grei\u010diausiai &#8222;nemirtinga&#8221; 555 mikroschema. Daug gamintoj\u0173 \u0161tampuoja \u0161it\u0105 stebukl\u0105, skiriasi tik raid\u0117s prie\u0161 555 &#8211; Fairchild Semiconductor: NE555\/KA555, National Semiconductor: LM1455\/LM555\/LM555C, STMicroelectronics: NE555N\/ K3T647, Texas Instruments: SN52555\/SN72555, n\u0105, o m\u016bs\u0173 kaimynai rusai turi K1006\u0412\u04181.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1368\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5-300x142.png\" alt=\"timer0-5\" width=\"300\" height=\"142\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5-300x142.png 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5-1024x485.png 1024w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5.png 1298w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Viskas \u010dia paprasta ir did\u017ei\u0105ja dalimi i\u0161 datasheeto. Taigis, C1, C2 ir POT1 nustato laik\u0105, po kurio \u012fjungiama rel\u0117. C1 ir C2 &#8211; tantaliukai, neb\u016btinai, bet SMD pasaulyje jie turi didel\u0119 talp\u0105 ir yra stabil\u016bs. Netgi neb\u016btinai turi b\u016bti du kondensatoriai, tiesiog j\u0173 sumin\u0117 talpa artimiausia reikalingai. Kei\u010diant &#8211; keisis suveikimo laikas, arba teks skai\u010diuoti kit\u0105 potenciometr\u0105&#8230; De\u0161iniau nuo 555 taimeriuko rel\u0117s elektromagnetas (rel\u0117 &#8211; automobil\u0117, 12V) ir antispaikinis diodas. Rel\u0117 jau gali b\u016bti su juo, bet jeigu ne &#8211; lituojam \u012f plok\u0161t\u0119. Toliau indikacinis LEDas (neb\u016btinai m\u0117lynas), srov\u0119 ribojantis rezistorius ir rel\u0117s NO\/NC kontaktai. Viskas jungiama per kontaktin\u0119 kalad\u0117l\u0119. PCB atrodys taip:<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5pcb.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1372\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5pcb-264x300.png\" alt=\"timer0-5pcb\" width=\"264\" height=\"300\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5pcb-264x300.png 264w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/timer0-5pcb.png 407w\" sizes=\"auto, (max-width: 264px) 100vw, 264px\" \/><\/a><\/p>\n<p>Gauname nediduk\u0119, 33&#215;36,5 mm PCB. Dar smulkmena &#8211; \u010dia naudojama lituojama mikrorel\u0117 arba lituojama kalad\u0117l\u0117 ir \u012fki\u0161ama mikro rel\u0117.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/kalade.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1374\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/kalade-300x300.png\" alt=\"kalade\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/kalade-300x300.png 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/kalade-150x150.png 150w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/kalade.png 364w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Schemos tobulinimas ? Pra\u0161om, nesunkiai galima padaryti abiej\u0173 pad\u0117\u010di\u0173 indikacija, tarkim kol i\u0161jungta raudonas LED, kai suveikia \u017ealias, arba atvirk\u0161\u010diai \ud83d\ude42 Arba naudoti tik vien\u0105, prie\u0161ingai negu dabar veikiant\u012f LED\u0105. Galima sumontuoti kelet\u0105 &#8222;laiko zon\u0173&#8221;, pvz 0-3 min, 0-30 min, 0-300 min. Pabaigai \u017eiupsnelis teorijos. Kaip suskai\u010diuoti kokio kondensatoriaus ir potenciometro reik\u0117s ? Paprastai. Suveikimas \u012fvyksta po 1\u03c4. Elektronikai mintinai \u017eino kaip minimum du dalykus &#8211; Omo d\u0117sn\u012f ir kaip suskai\u010diuoti laiko konstant\u0105 \u03c4. Ne\u017einai ? Pasitikrink, ar vis dar esi elektronikas :D.<\/p>\n<p>\u03c4 = R(\u03a9)\u00a0\u2022 C (F);<\/p>\n<p>\u03c4 = 2200000 (\u03a9) \u2022 0,000094 (F);<\/p>\n<p>\u03c4 = 206,8 s \u2248 3 min 26 s;<\/p>\n<p>Taigi, su esamais maksimaliais detali\u0173 nominalais rel\u0117 suveiks po 3 minu\u010di\u0173 ir 26 sekund\u017ei\u0173. Realus matavimas parod\u0117, kad rel\u0117 suveikia po 3 minu\u010di\u0173 ir 43 sekund\u017ei\u0173. Taip gali b\u016bti, nebent naudosite supertikslius, karinei pramonei skirtus elementus. O standartini\u0173 element\u0173 nominal\u0173 paklaida (ypa\u010d kondensatori\u0173) laisvai gali svyruoti\u00a0\u00b1 10 \u2026 20 %. Padidinus ar pama\u017einus R arba C ka\u017ekiek kart\u0173 &#8211; tiek pat pasikeis ir laiko konstanta. Pavyzd\u017eiui, padidinus C de\u0161imt kart\u0173 &#8211; suveikimas bus po 34 su trupu\u010diu minu\u010di\u0173.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2014\/04\/taimeris.rar\" target=\"_blank\">O \u010dia Eagle failiukai.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chm, pasirodo nera\u0161iau jau 2 m\u0117nesius. Kaip greitai b\u0117ga laikas (netik\u0161a). Bet dabar k\u016brybin\u0117 kriz\u0117, plius \u0161iaip darb\u0173 visoki\u0173 atsirado &#8211; n\u0117ra kada. Prad\u0117ti projektai laukia (ypa\u010d CNC stakl\u0117s), o daryt n\u0117ra kada. Kad b\u016bt\u0173 k\u0105 skaityti \u012fmetu vien\u0105 i\u0161 senesni\u0173 projektuk\u0173. Ka\u017ekokiam reikalui darbe prisireik\u0117 atjungti apkrov\u0105 po tam tikro laiko nuo maitinimo pajungimo&#8230;.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1367","post","type-post","status-publish","format-standard","hentry","category-elektronika"],"_links":{"self":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/1367","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/comments?post=1367"}],"version-history":[{"count":13,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/1367\/revisions"}],"predecessor-version":[{"id":1922,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/1367\/revisions\/1922"}],"wp:attachment":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/media?parent=1367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/categories?post=1367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/tags?post=1367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}