Kodi gwero la chitetezo cha PCB ndi chiyani?

Sinthani mphamvu zamagetsi ndi zotayirira
Mphamvu yolowera ndi kutulutsa magetsi ikadutsa 36V AC ndi 42V DC, vuto lamagetsi lamagetsi liyenera kuganiziridwa. Malamulo achitetezo: kutayikira pakati pa magawo awiri aliwonse omwe angapezeke kapena gawo lililonse lomwe lingafikiridwe ndi mtengo umodzi wamagetsi sikuyenera kupitirira mapu 0.7 kapena DC 2mA.
Mphamvu yamagetsi ikakhala 220V yosinthira magetsi, mtunda wolowerera pakati pa malo ozizira ndi otentha sudzakhala ochepera 6mm, ndipo malo pakati pa mizere ya doko kumapeto onse awiri ayenera kukhala okulirapo kuposa 3mm.
Mphamvu yolimbana pakati pazigawo zoyambirira zosinthira izikhala 3000V AC, ndipo kutayikira kwapafupifupi kudzakhala 10mA. Kutayikira kwamakono kuyenera kukhala kochepera 10mA pambuyo poyesa miniti imodzi
Mapeto olowera pakusinthira magetsi azitha kupirira magetsi pansi (chipolopolo) ndi AC 1500V, ikani kutayikira kwaposachedwa ngati 10mA, ndikuyendetsa mayeso oyeserera kwa mphindi 1, ndipo kutayikira kwanthawi kuyenera kukhala kochepera 10mA.
DC 500V imagwiritsidwa ntchito poyimitsa mphamvu yamagetsi kumapeto kwa magetsi osunthira pansi (chipolopolo), ndipo kutulutsa kwakanthawi kumayikidwa ngati 10mA. Chitani zoyeserera zamagetsi pamphindi 1, ndipo kutayikira pakadali pano kuyenera kukhala kochepera 10mA.
Zofunikira kuti mtunda wosinthana ukhale wotetezeka
Mtunda wachitetezo pakati pa mbali ndi mbali yachiwiri ya mizere iwiri: 6mm, kuphatikiza 1mm, slotting iyeneranso kukhala 4.5mm.
Mtunda wachitetezo pakati pa mbali ndi mbali yachiwiri pamzere wachitatu: 6mm, kuphatikiza 1mm, slotting iyeneranso kukhala 4.5mm.
Chitetezo pakati pa zingwe ziwiri zamkuwa zamagetsi> 2.5mm. Onjezani 1mm, ndipo malowo adzakhalanso 1.5mm.
Mtunda pakati pa LN, l-gnd ndi n-gnd ndi wokulirapo kuposa 3.5mm.
Pulayimale fyuluta capacitor pini cm> 4mm.
Chitetezo pakati pa magawo oyambira> 6mm.
Kusintha zofunikira zamagetsi zamagetsi za PCB
Pakati zojambulazo mkuwa ndi zojambulazo zamkuwa: 0.5mm
Pakati zojambulazo mkuwa ndi solder olowa: 0.75mm
Pakati pa mfundo za solder: 1.0mm
Pakati pa zojambulazo zamkuwa ndi m’mphepete mwa mbale: 0.25mm
Pakati m’mphepete mwa dzenje ndi m’mphepete mwa dzenje: 1.0mm
Pakati m’mphepete mwa dzenje ndi m’mphepete mwa mbale: 1.0mm
Mkuwa zojambulazo mzere m’lifupi> 0.3mm.
Kutembenukira ngodya 45 °
Kusiyanitsa kofanana kumafunikira kulumikizana pakati pa mizere yofananira.
Zofunikira pachitetezo pakusintha magetsi
Pezani lama fuyusi ofunidwa ndi malamulo achitetezo kuchokera kuzinthu za malamulo achitetezo, ndipo mtunda pakati pa mapaketi awiriwa ndi> 3.0mm (min). Pakadutsa gawo lalifupi posachedwa, ma capacitors X ndi Y azikhala mu chitetezo. Ikuwona kupirira kwamagetsi ndi kutseguka kwololeza kwamakono. M’malo otentha, zida zapompopompo zidzakhala zosakwana 0.7ma, zida zogwirira ntchito m’malo ocheperako zidzakhala zosakwana 0.35ma, ndipo mphamvu yayikulu siyikhala yoposa 4700pf. Kutuluka kukana kudzawonjezedwa ku x capacitor yokhala ndi mphamvu> 0.1uF. Zida zogwirira ntchito zikazimitsidwa, mphamvu yamagetsi pakati pa mapulagi siyikhala yayikulu kuposa 42V mkati mwa 1s.
Kusintha zofunikira zoteteza magetsi
Mphamvu yathunthu yakusinthira magetsi ikaposa 15W, kuyesa kwakanthawi kochepa kudzachitika.
Pomwe chotsulacho chimafupikitsidwa, sipadzakhala kutentha kapena moto kuzungulira, kapena nthawi yoyaka idzakhala mkati mwa 3.
Mtunda wapakati pa mizere yoyandikana ndi wochepera 0.2mm, ukhoza kuonedwa ngati dera lalifupi.
Kuyesa kwakanthawi kochepa kudzachitika kwa electrolytic capacitor. Pakadali pano, chifukwa ma electrolytic capacitor ndiosavuta kulephera, chidwi chimaperekedwa kuzida pazoyesa zazifupi kuti zisawope moto.
Zitsulo ziwiri zokhala ndi zinthu zosiyanasiyana sizingagwiritsidwe ntchito ngati zolumikizira chifukwa zimapanga dzimbiri lamagetsi.
Malo olumikizirana pakati pa cholumikizira cha solder ndi pini yamagawo azikhala okulirapo kuposa gawo lopingasa la piniyo. Kupanda kutero, imawonedwa ngati kuwotcherera kolakwika.
Chipangizo chokhudzira magetsi – electrolytic capacitor
Electrolytic capacitor ndichida chosavomerezeka pakusintha magetsi ndipo chimakhudza nthawi yayitali pakati pamavuto (MBTF) pakusintha magetsi.
Pambuyo pakugwiritsa ntchito ma electrolytic capacitor kwakanthawi, mphamvu yamagetsi imachepa ndipo mphamvu yamagetsi idzawonjezeka, chifukwa chake ndikosavuta kutentha ndikulephera.
Mphamvu yamagetsi yamagetsi yamagetsi ikamalephera kupanga kutentha, nthawi zambiri imayambitsa kuphulika. Chifukwa chake, ma electrolytic capacitor okhala ndi m’mimba mwake wopitilira 10mm adzakhala ndi ntchito yophulika. Kwa electrolytic capacitor yokhala ndi ntchito yophulika, poyambira pamtanda imatsegulidwa pamwamba pa chipolopolo cha capacitor, ndipo dzenje lotsalira limatsalira pansi pa pini.
Moyo wautumiki wa capacitor umadziwika makamaka ndi kutentha kwamkati kwa capacitor, ndipo kutentha kwakukwera kwa capacitor kumayenderana kwambiri ndi ma ripple omwe ali pano komanso magetsi. Chifukwa chake, ma ripple omwe alipo pakali pano komanso ma ripple voltage omwe amaperekedwa ndi ma electrolytic capacitors ndizomwe zimayambira pakatenthedwe kantchito (85 ℃ kapena 105 ℃) ndi moyo wautumiki wapadera (maola 2000), ndiye kuti, pansi pa kugundana Mpweya wamakono komanso wolimba, moyo wautumiki wa electrolytic capacitor ndi maola 2000 okha. Pamene moyo wa capacitor ukuyenera kukhala wopitilira maola 2000, moyo wamtundu wa capacitor udapangidwa molingana ndi ndondomekoyi.