{"id":190,"date":"2017-02-09T05:59:29","date_gmt":"2017-02-09T07:59:29","guid":{"rendered":"http:\/\/vejas.defas.lt\/?p=190"},"modified":"2017-02-09T08:26:12","modified_gmt":"2017-02-09T10:26:12","slug":"galvaniskai-atskirto-maitinimo-saltinio-projektavimas-dc-12v-dc-12v","status":"publish","type":"post","link":"http:\/\/vejas.defas.lt\/?p=190","title":{"rendered":"Galvani\u0161kai atskirto maitinimo \u0161altinio projektavimas DC 12V – DC 12V"},"content":{"rendered":"

Tikslas – apr\u016bpinti maitinimo \u012ftampa generatoriaus temperat\u016bros matuokl\u012f. Galvani\u0161kai atskirtas tod\u0117l, kad generatoriuje indukuojasi didel\u0117s \u012ftampos, be to atskitu atveju jis gali b\u016bti suri\u0161tas su 220V tinklu per inverter\u012f.<\/p>\n

Schema:<\/p>\n

\"\"<\/p>\n

\u012e Q6 baz\u0119 paduodamas signalas i\u0161 NE555 pagrindu sumontuoto generatoriaus. Jo schema ir satelitini\u0173 element\u0173 reik\u0161mi\u0173 skai\u010diavimas parodytas sekan\u010diame paveiksle:<\/p>\n

\"\"<\/p>\n

Ir \u010dia visas gra\u017eumas: generatorius generuoja – transformatorius netransformuoja.<\/p>\n

Klausimas. Kod\u0117l tranzistoriaus kolektoriuje impulso \u017eemas lygis nepasiekia ‘\u017dem\u0117s’. \u017dr. 1 2 ir 3 ta\u0161k\u0173 oscilogramas:<\/p>\n

\"\"\"\"\"\"<\/p>\n

\"\"\"\"<\/p>\n

Pastaba: 3-\u010dios oscilogramos vertikalios a\u0161ies vert\u0117: 0,2V\/cm(langelis). Pirm\u0173 dvej\u0173, kaip parodyta ranken\u0117li\u0173 foto. 2V\/cm ir 5us\/cm<\/p>\n

I\u0161\u0117jime apkrovus 910Om var\u017ea gaunama 4V 5tampa. Galia: P=4*4\/910=17.5mW. Pageidautina 1W galia. Transformatorius paimtas i\u0161 budin\u010dio maitinimo dalies Codegen 300W ATX maitinimo bloke. Visos apvijos nuimtos, suvyniota 70-80 pirmin\u0117 ir antrin\u0117 apvijos ~0,5mm laidu.<\/p>\n

Kaip rodo 3-\u010dia oscilograma tranzistorius komutuoja 1A srov\u0119 impulso metu. Prie 12V maitinimo ir\u00a0 K=3,5\/2,5 = 58% generatoriaus impuls\u0173 skverbties sunaudojamas galingumas=U*I*K=12*1*0.58=6.96W. Toks galingumas tur\u0117t\u0173 b\u016bti paduodamas \u012f traf\u0105. I\u0161einantis galingumas 17,5mW. naudingumo koeficientas 0,017\/6,96=0.24% !!!!???<\/p>\n

K\u0105 daryti?<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Tikslas – apr\u016bpinti maitinimo \u012ftampa generatoriaus temperat\u016bros matuokl\u012f. Galvani\u0161kai atskirtas tod\u0117l, kad generatoriuje indukuojasi didel\u0117s \u012ftampos, be to atskitu atveju jis gali b\u016bti suri\u0161tas su 220V tinklu per inverter\u012f. Schema: \u012e Q6 baz\u0119 paduodamas signalas i\u0161 NE555 pagrindu sumontuoto generatoriaus. Jo schema ir satelitini\u0173 element\u0173 reik\u0161mi\u0173 skai\u010diavimas parodytas sekan\u010diame paveiksle: Ir \u010dia visas gra\u017eumas: generatorius … Skaityti toliau: Galvani\u0161kai atskirto maitinimo \u0161altinio projektavimas DC 12V – DC 12V<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-190","post","type-post","status-publish","format-standard","hentry","category-be-kategorijos"],"acf":[],"_links":{"self":[{"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=\/wp\/v2\/posts\/190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=190"}],"version-history":[{"count":5,"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=\/wp\/v2\/posts\/190\/revisions"}],"predecessor-version":[{"id":203,"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=\/wp\/v2\/posts\/190\/revisions\/203"}],"wp:attachment":[{"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=190"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/vejas.defas.lt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}