Chinja unomira voltage uye leakage zvinodiwa
Kana iyo yekuisa uye yekubuda voltage yekuchinja magetsi inopfuura 36V AC uye 42V DC, dambudziko remagetsi kuvhunduka rinofanirwa kutariswa. Mitemo yekuchengetedza: kuvhuvhuta pakati pezvikamu zviviri zvinopinda kana chimwe chikamu chinowanikwa uye chidimbu chimwe chemagetsi hachifanirwe kudarika 0.7map kana DC 2mA.
Kana iyo yekuisa magetsi iri 220V yekuchinja magetsi, iyo nzvimbo yekukwira pakati pechando neinopisa ivhu haifanire kunge iri pasi pe6mm, uye nzvimbo pakati pemitsara yemachiteshi kumagumo ese ari maviri inofanira kuve yakakura kudarika 3mm.
Iyo inomira voltage pakati pematanho ekutanga eiyo switching transformer ichave 3000V AC, uye iyo yenjuzu yazvino ichave 10mA. Ikozvino kuburitswa kunofanira kunge kuri pasi pe10mA mushure memubvunzo mumwe weminiti
Mugumo wekupinda wekushandura magetsi unokwanisa kumira kumagetsi pasi (goko) ne AC 1500V, seta iyo leakage yazvino se10mA, uye kuitisa kumira nemagetsi bvunzo kweminiti imwe, uye yazvino yekudonha inofanira kunge iri pasi pe1mA.
DC 500V inoshandiswa kumisikidza voltage yemhedzisiro yekubuda kwesimba rekuchinja pasi (goko), uye yazvino yekudonha yakaiswa se10mA. Kuitisa muyedzo wemagetsi bvunzo kwemineti imwe, uye iyo yenjuzu yazvino inofanira kunge iri pasi pe1mA.
Zvinodikanwa zvechepe yakachengeteka chinhambwe chinja
Iyo yekudaro chinhambwe pakati perutivi nerutivi rwechipiri rwemitsetse miviri: 6mm, uyezve 1mm, iyo slotting inofanira zvakare kuve 4.5mm.
Iyo yekuchengetedza nzvimbo pakati peiyo divi uye yechipiri divi mumutsara wechitatu: 6mm, pamwe 1mm, iyo slotting inofanira zvakare kuve 4.5mm.
Kuchengetedza kureba pakati pemapepa maviri emhangura efiyuzi> 2.5mm. Wedzera 1mm, uye iyo slotting ichavewo 1.5mm.
Iyo nzvimbo iri pakati peLN, l-gnd uye n-gnd yakakura kudarika 3.5mm.
Primary Sefa capacitor pini nzvimbo> 4mm.
Kuchengetedza kureba pakati pezvikamu zvekutanga> 6mm.
Kugadziridza magetsi pcb wiring zvinodiwa
Pakati pemhangura foil uye yemhangura foil: 0.5mm
Pakati pemhangura foil uye solder mubatanidzwa: 0.75mm
Pakati pezvisungo zve solder: 1.0mm
Pakati pemhangura foil uye ndiro kumucheto: 0.25mm
Pakati pegomba kumucheto uye gomba kumucheto: 1.0mm
Pakati pegomba kumucheto uye ndiro kumucheto: 1.0mm
Mhangura foil mutsara upamhi> 0.3mm.
Kutendeuka kona 45 °
Nzvimbo yakaenzana inodiwa kune wiring pakati pemitsara yakafanana.
Kuchengetedza zvinodiwa zvekuchinja magetsi
Tsvaga iyo fiyuzi inodiwa nemitemo yekuchengetedza kubva kune izvo zvikamu zvemitemo yekuchengetedza, uye chinhambwe chinofamba pakati pemapadhi maviri iri> 3.0mm (min). Mukana wepashure padanho pfupi wedunhu, iwo ma capacitors X uye Y anofanirwa kunge ari mune yekuchengetedza mutemo. Inotarisa kumira nemagetsi uye inobvumidzwa leakage yazvino. Munzvimbo dzinodzika tembiricha, izvo zvinoyerera zvemidziyo zvichave zvisingasviki 0.7ma, izvo zvekushandisa zvinoshanda munzvimbo yakadzikama zvichave zviri pasi pe0.35ma, uye iyo y capacitance haizopfuure 4700pf. Discharge kuramba ichawedzerwa kune x capacitor ine chinzvimbo> 0.1uF. Mushure mekushandisa kwese kwekushandisa, magetsi ari pakati pemapulagi haazove akakura kupfuura 42V mukati me1s.
Kuchinja magetsi ekuchengetedza zvinodiwa
Kana huwandu hwesimba rekuburitsa simba rekuchinja magetsi hwapfuura 15W, bvunzo pfupi redunhu ichaitwa.
Kana chinobuda chinogumira chapfupiswa kutenderera, hapazove nekupisa kana moto mudunhu, kana nguva yekupisa ichave iri mukati me3.
Kana chinhambwe pakati pemitsara iri padhuze chiri pasi pe0.2mm, inogona kutariswa sedunhu pfupi.
Pfupi redunhu bvunzo ichaitirwa ye electrolytic capacitor. Panguva ino, nekuti electrolytic capacitor iri nyore kutadza, kutariswa kuchabhadharwa kumidziyo panguva pfupi yedunhu bvunzo yekudzivirira moto.
Simbi mbiri dzine dzakasiyana zvivakwa hazvigone kushandiswa sezvinobatanidza nekuti zvinozogadzira ngura yemagetsi.
Iyo yekudyidzana nzvimbo pakati peiyo solder mubatanidzwa uye yechinongedzo pini ichave yakakura kupfuura iyo yekuyambuka-chikamu chikamu chenzvimbo yechinhu pini. Zvikasadaro, inoonekwa seyakaipa simbi.
Chigadzirwa chinokanganisa switching magetsi – electrolytic capacitor
Electrolytic capacitor chishandiso chisina kuchengetedzeka mukuchinja magetsi uye ine chekuita nenguva inorehwa pakati pekukundikana (MBTF) yekuchinja magetsi.
Mushure mekunge iyo electrolytic capacitor yashandiswa kwenguva yakati, iyo capacitance inoderera uye iyo ripple voltage ichawedzera, saka zviri nyore kupisa uye kutadza.
Kana iyo-yemagetsi-emagetsi electrolytic capacitor ikatadza kuburitsa kupisa, inowanzo kukonzera kuputika. Naizvozvo, iyo electrolytic capacitor ine dhayamita yakakura kupfuura 10mm ichave nebasa rekuputika-chiratidzo. Kune iyo electrolytic capacitor ine kuputika-chiratidzo chebasa, muchinjikwa groove unovhurwa kumusoro kweiyo capacitor goko, uye gomba rekudzimisa rasara pazasi peiyo pini.
Hupenyu hwebasa hweiyo capacitor inonyanya kugadziriswa nemukati tembiricha yeiyo capacitor, uye iyo tembiricha inomuka yeiyo capacitor inonyanya kuenderana neanokukura iyezvino uye magetsi emagetsi. Naizvozvo, iro ripple razvino uye ripple voltage parameter yakapihwa neakajairika electrolytic capacitors ndiwo akaremara zvazvino kukosha pasi pemamiriro ehumwe kushanda tembiricha (85 ℃ kana 105 ℃) uye yakatarwa hupenyu hwebasa (2000 maawa), Ndiko kuti, pasi pemamiriro ekuputika yazvino uye yakaputika voltage, iyo sevhisi hupenyu ye electrolytic capacitor ingori maawa 2000 chete. Kana hupenyu hwebasa hweiyo capacitor ichidikanwa kuti ive inopfuura maawa 2000, hupenyu hwebasa hweiyo capacitor huchagadzirwa maererano neiyo inotevera fomula.