{"id":393,"date":"2011-08-11T15:22:25","date_gmt":"2011-08-11T13:22:25","guid":{"rendered":"http:\/\/www.dainile.lt\/?p=393"},"modified":"2015-11-03T14:02:02","modified_gmt":"2015-11-03T12:02:02","slug":"indukcinis-kaitinimas","status":"publish","type":"post","link":"https:\/\/www.dclabs.lt\/dainiaus\/indukcinis-kaitinimas\/","title":{"rendered":"Indukcinis kaitinimas"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>Jau atrodo kokia i\u0161nagrin\u0117ta tema, bet vistiek \u012fdomu. Dar \u010dia tur\u0117damas laiko sukurpiau ir devaisiuk\u0105. Nelabai galingas, bet edukaciniams tikslams u\u017etenka. Kaip pagrindas panaudota Vladimiro Mazilli schema:<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/scheme.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-394 aligncenter\" title=\"scheme\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/scheme-300x220.png\" alt=\"\" width=\"300\" height=\"220\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/scheme-300x220.png 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/scheme.png 750w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Schema paprasta, bet leid\u017eia pumpuoti neblogus galingumus \u012f rit\u0119 ir laaaabai lengvai modifikuojama. O kitame rit\u0117s &#8222;gale&#8221; gali b\u016bti Tesla coil&#8217;as, Jok\u016bbo \ud83d\ude42 kop\u0117\u010dios, indukcinio kaitinimo dalis ir kt. Kadangi \u017eaib\u0173 gamybai turiu kit\u0105 prietaisiuk\u0105, tai \u0161itas panaudotas indukciniam kaitinimui. Darytas daugiau edukaciniais tikslais, bet vien\u0105 kart\u0105 pravert\u0117 prakti\u0161kai &#8211; prie 10 mm metalinio strypo reik\u0117jo prilituot laiduk\u0105 &#8211; lituoklis vargo kaitindamas ir tai nieko gero nei\u0161\u0117jo, o su indukciniu kaitinimu kelios sekund\u0117s rit\u0117je ir prisilitavo net be lituoklio, u\u017eteko metalo kar\u0161\u010dio. Keletas pastab\u0173:<\/p>\n<p>1. Pagaminus darbin\u0119 rit\u0119 svarbu teisingai j\u0105 pajungti.<br \/>\n2. Parenkant detales reikia nepamir\u0161ti, kad apara\u010diukas veikia \u00a0rezonansiniame re\u017eime &#8211; taigi, rit\u0117 bus \u0161eriama Uin\u00b7\u03c0 \u012ftampa, taigis jei maitinimas 10V tai rit\u0117je pikai bus apie 31,41 V.<br \/>\n3. \u00a0Darbin\u012f da\u017en\u012f nustato LC kont\u016bras, j\u012f galima skai\u010diuoti ir bandyti parinkti optimal\u0173.<br \/>\n4. Netingint galima stipriai tobulinti id\u0117j\u0105 (ZVS ir t.t.).<\/p>\n<p>Taigis, trumpai apie veikim\u0105 (jei i\u0161eis trumpai). LC kont\u016bras sudarytas (nat\u016bralu!) i\u0161 rit\u0117s ir kondensatoriaus. Kondensatorius dirba impulsiniame re\u017eime, taigi turi b\u016bti kokybi\u0161kas, darbin\u0117 \u012ftampa ne ma\u017eesn\u0117 nei\u00a0 Uin\u00b7\u03c0 + dar ka\u017ekiek Volt\u0173 atsargiai. Geriau naudoti pl\u0117velinius\/polipropileninius arba MKP (Metallized Plastic Polypropylene). Kuo didesn\u0117 kondensatoriaus talpa &#8211; tuo ma\u017eesnis da\u017enis. Jei jau \u012fdomu galima ir paskai\u010diuoti:<br \/>\n<script type=\"text\/javascript\" language=\"javascript\">\/\/ <![CDATA[\n   function addNumbers() { var val1 = parseFloat(document.getElementById(\"value1\").value); var val2 = parseFloat(document.getElementById(\"value2\").value); var ansD = document.getElementById(\"answer\"); ansD.value = 1 \/ (2 * Math.PI * Math.sqrt(val1 * val2)); }\n\/\/ ]]><\/script><\/p>\n<p>Talpa Faradais:<\/p>\n<p><input id=\"value1\" type=\"text\" name=\"value1\" value=\"0.0001\" \/><\/p>\n<p>Induktyvumas Henriais:<\/p>\n<p><input id=\"value2\" type=\"text\" name=\"value2\" value=\"0.0002\" \/> <input onclick=\"javascript:addNumbers()\" type=\"button\" name=\"Sumbit\" value=\"Skai\u010diuoti\" \/><\/p>\n<p>Da\u017enis Hercais:<\/p>\n<p><input id=\"answer\" type=\"text\" name=\"answer\" value=\"\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Tranzistoriaus parinkimas gana paprastas. \u0160rote radus koki\u0173 IGBT arba MOSFET&#8217;u &#8211; puiku, jei ne &#8211; teks pirkti&#8230; Kas geriau &#8211; IGBT ar MSOFET ? Saky\u010diau geriausiai rinktis pagal da\u017en\u012f &#8211; iki 50 KHz jamt IGBT, vir\u0161 300 KHz jamt MOSFET&#8217;us. \u012e tarp\u0105 tiks abu. Bendru atveju \u0161i\u0173 tranzistori\u0173 pasirinkimas apsprend\u017eiamas pagal \u012frenginio parametrus:<\/p>\n<p>IGBT naudoti, kai:<\/p>\n<ul>\n<li>Trumpas darbo ciklas;<\/li>\n<li>Ma\u017eas da\u017enis (iki 20 KHz);<\/li>\n<li>Pastovi aukrova, \u017eemas da\u017enis, didel\u0117 srov\u0117;<\/li>\n<li>Auk\u0161ta \u012ftampa (vir\u0161 1000V);<\/li>\n<li>Darbas auk\u0161toje temperat\u016broje (sand\u016bros vir\u0161 100\u00b0 C);<\/li>\n<li>Galingumai vir\u0161 5 KW.<\/li>\n<\/ul>\n<p>MOSFET naudoti, kai:<\/p>\n<ul>\n<li>Auk\u0161tas darbinis da\u017enis (vir\u0161 2000 KHz);<\/li>\n<li>Kintama apkrova, didelis da\u017enis, didel\u0117 srov\u0117;<\/li>\n<li>\u017dema \u012ftampa (iki 250V);<\/li>\n<li>Galia iki 500W.<\/li>\n<\/ul>\n<p>K\u0105 naudoti vienu ar kitu atveju &#8211; vienareik\u0161mi\u0161ko atsakymo n\u0117ra &#8211; parametrai persidengia, priklausomai nuo schemos galima naudoti abu variantus ir puikiai dirbs. \u0160ituo konkre\u010diu atveju &#8211; reikia, kad santakos\/i\u0161takos \u012ftampa b\u016bt\u0173 bent tris kartus didesn\u0117, nei maitinimo \u012ftampa, jei ne &#8211; i\u0161keps. Tranzai kaip ir galingi \u017eaisliukai, gali p\u016bsti dideles sroves ir da\u017enius, bet per didel\u0117s \u012ftampos nem\u0117gsta. Kadangi srov\u0117s vaik\u0161to didel\u0117s, tai d\u0117d\u0117s Omo formul\u0117 pla\u010diai \u0161ypsosi ir kaitina tranzistorius. Tod\u0117l reikia kuo ma\u017eesn\u0117s var\u017eos tarp Santakos ir I\u0161takos (R(DS)on parametras). Diodai &#8211; tokios pat \u012ftampos kaip ir tranzistoriai, greiti (Fast, Ultra Fast). Zeneriai gali b\u016bti nuo 12 iki 18 V, galima bandyti didinti nuo 12 V ir tikrinti, kaip pasikeis veikimas, naudojau 0,5W galios. Rezistoriai&#8230; Nu o k\u0105 apie juos&#8230; Nominalai para\u0161yti, nu nebent kad tiks 0,5W galios. Rit\u0117s gamybai galima pasitelkti fantazija arba \u0161rot\u0105 \ud83d\ude00 A\u0161 susukau storu, 2mm skersmens variniu lakuotu laidu ant senovinio vielinio rezistoriaus (\u017eali tokie b\u016bdavo, keramikinis vamzdelis apvyniotas viela ir aplieta stiklu). Nichromas su stiklo padengimu puikiai at\u0161oko pertraukus acetileniniu suvirinimo aparatu&#8230; \u0160tai ir viskas \ud83d\ude42 Toliau foto.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9490.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-439\" title=\"IMG_9490\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9490-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9490-300x200.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9490.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9492.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-440\" title=\"IMG_9492\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9492-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9492-300x200.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9492.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><span><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9491.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-441\" title=\"IMG_9491\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9491-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9491-300x200.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/IMG_9491.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/span><\/p>\n<p>Didelis, negra\u017eus &#8211; bet veikia. PCB pai\u0161yta da\u017eais, po to \u0117sdinta, o kadangi nor\u0117jau tik pabandyt kaip \u010dia viskas veikia, tai per daug nesileidau \u012f meno bei ergonomikos sl\u0117pinius.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile0.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-444\" title=\"NewFile0\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile0-300x219.png\" alt=\"\" width=\"300\" height=\"219\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile0-300x219.png 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile0.png 320w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><span><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-445\" title=\"NewFile1\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile1-300x219.png\" alt=\"\" width=\"300\" height=\"219\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile1-300x219.png 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2011\/08\/NewFile1.png 320w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/span><\/p>\n<p>Pora oscilogram\u0173 nuo rit\u0117s (geltona ir melyna &#8211; viena rit\u0117s pus\u0117 ir kita) &#8211; kair\u0117je be apkrovos, de\u0161in\u0117je &#8211; \u012fki\u0161us \u012f rit\u0119 10 mm skersmens var\u017et\u0105. Maitinimas 12 VDC, tu\u0161\u010dia eiga valgo 4A, su min\u0117ta apkrova &#8211; 16A, tai 12\u00b716 = 192W. Jei gerai pamenu ka\u017ekur prie 20V maitinimo \u0161altinis pumpavo ribin\u0119 savo srov\u0119 &#8211; 20A. Tai gaunasi apie 400W. \u010cia dar ne riba, bet pabandymui u\u017etenka. Toliau didinant gali\u0105 reikt\u0173 pasir\u016bpinti rit\u0117s au\u0161inimu. Labai tikt\u0173 rit\u0117 i\u0161 varinio vamzdelio per kur\u012f teka vanduo. Ir truputis matematikos &#8211; talpa 4 \u00b5F (0,000004 F), tai rit\u0117s induktyvumas yra apie 0,363 mH (0.000363 H). Skai\u010diai ai\u0161ku apytiksliai&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Jau atrodo kokia i\u0161nagrin\u0117ta tema, bet vistiek \u012fdomu. Dar \u010dia tur\u0117damas laiko sukurpiau ir devaisiuk\u0105. Nelabai galingas, bet edukaciniams tikslams u\u017etenka. Kaip pagrindas panaudota Vladimiro Mazilli schema: Schema paprasta, bet leid\u017eia pumpuoti neblogus galingumus \u012f rit\u0119 ir laaaabai lengvai modifikuojama. O kitame rit\u0117s &#8222;gale&#8221; gali b\u016bti Tesla coil&#8217;as, Jok\u016bbo \ud83d\ude42 kop\u0117\u010dios, indukcinio kaitinimo dalis&#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-393","post","type-post","status-publish","format-standard","hentry","category-elektronika"],"_links":{"self":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/393","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=393"}],"version-history":[{"count":51,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/393\/revisions"}],"predecessor-version":[{"id":1983,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/393\/revisions\/1983"}],"wp:attachment":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/media?parent=393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/categories?post=393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/tags?post=393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}