Kuti uwane kushanda kwakanakisisa kwemagetsi emagetsi, kurongeka kwezvikamu uye kutenderera kwetambo zvakakosha zvikuru.Kuti kugadzira aPCBnehutano hwakanaka uye nemutengo wakaderera.Mamiriro ezvinhu anotevera anofanira kuteverwa:
layout
Kutanga, funga saizi yePCB.Kana saizi yePCB yakakura kwazvo, mitsetse yakadhindwa ichave yakareba, iyo impedance ichawedzera, iyo anti-ruzha kugona ichaderera, uye mutengo uchawedzerawo;kana iri duku, kupisa kwekushisa hakuzove kwakanaka, uye mitsetse iri pedyo ichavhiringidzika nyore nyore.Mushure mekuona saizi yePCB, sarudza nzvimbo yezvikamu zvakakosha.Pakupedzisira, maererano nesangano rinoshanda redunhu, zvose zvikamu zvedunhu zvakaiswa.
Pakusarudza nzvimbo yezvikamu zvakakosha, zvinotevera zvinofanirwa kucherechedzwa:
① Pfupisa chinongedzo pakati pepamusoro-frequency zvikamu zvakanyanya sezvinobvira, uye edza kudzikisa maparamendi avo ekugovera uye kupindirana kwemagetsi.Zvikamu zvinokonzeresa kukanganisa hazvigone kunge zviri padhuze kune mumwe nemumwe, uye zvinopinda uye zvinobuda zvinofanirwa kuchengetwa zviri kure sezvinobvira.
② Panogona kunge paine mutsauko mukuru pakati pezvimwe zvikamu kana waya, uye chinhambwe chiri pakati pazvo chinofanira kuwedzerwa kudzivirira netsaona pfupi yedunhu inokonzerwa nekubuda.Zvikamu zvine high voltage zvinofanirwa kurongeka munzvimbo dzisingasvikike nyore nemaoko panguva yedebugging.
③ Zvikamu zvinorema kupfuura 15 g zvinofanirwa kugadziriswa nemabhuraketi uye zvobva zvasungwa.Izvo zvikamu zvakakura, zvinorema, uye zvinogadzira kupisa kwakawanda hazvifanirwe kuiswa pabhodhi rakadhindwa, asi zvinofanirwa kuiswa pachesi yepasi ndiro yemuchina wese, uye dambudziko rekupisa kupisa rinofanira kutariswa.Thermal components zvinofanira kuchengetwa kure nezvinopisa zvikamu.
④ Pakurongeka kwezvinhu zvinogadziriswa senge potentiometers, inogadziriswa inductance coil, inochinja capacitor, uye micro switch, izvo zvinodikanwa zvemuchina wese zvinofanirwa kutariswa.Kana iyo yakagadziriswa mukati memuchina, inofanira kuiswa pabhodhi rakadhindwa pazvinenge zvakakodzera kugadzirisa;kana yakagadziriswa kunze kwemuchina, chinzvimbo chayo chinofanirwa kuchinjirwa kune chinzvimbo chekugadzirisa knob pane chassis panel.
Zvinoenderana neiyo inoshanda unit yedunhu, kana uchiisa kunze zvese zvikamu zvedunhu, zvinotevera zvimiso zvinofanirwa kuteedzerwa:
① Ronga nzvimbo yeimwe neimwe inoshanda yedunhu unit zvinoenderana nekuyerera kwedunhu, kuitira kuti marongerwo ave nyore kutenderera kwechiratidzo, uye kutungamira kwechiratidzo kunochengetwa sekuenderana sezvinobvira.
② Tora izvo zvakakosha zveseseti inoshanda sepakati uye gadzira marongero akaitenderedza.Zvikamu zvinofanirwa kuve zvakaenzana, zvakatsvinda uye zvakabatanidzwa paPCB, kuderedza uye kupfupisa zvinotungamira uye kubatana pakati pezvikamu.
③ Kune maseketi anoshanda pamhepo huru, iyo yekugovera paramita pakati pezvikamu inofanirwa kutariswa.Kazhinji, dunhu rinofanira kuronga zvikamu zvakaenzana sezvinobvira.Nenzira iyi, haina kungonaka chete, asiwo iri nyore kuunganidza uye weld, uye nyore kugadzira kuwanda.
④Zvikamu zviri pamucheto webhodhi redunhu kazhinji hazvisi pasi pe2 mm kubva kumucheto kwebhodhi redunhu.Chimiro chakanakisisa chebhodhi redunhu ndiro rectangle.Aspect ratio i3:2 kana 4:3.Kana saizi yedare redunhu inopfuura 200 mm✖150 mm, iyo mechanic simba redunhu bhodhi inofanirwa kutariswa.
wiring
Mitemo yacho ndeiyi:
① Waya dzinoshandiswa pakupinza uye kuburitsa zviteshi zvinofanirwa kudzivirira kuva padhuze uye kuenderana kune imwe neimwe sezvinobvira.Zvakanakisisa kuwedzera tambo yepasi pakati pemitsetse kudzivirira kubatanidza mhinduro.
② Hupamhi hudiki hweakadhindwa redunhu bhodhi waya inonyanya kutsanangurwa nesimba rekunamatira pakati pewaya uye insulating substrate uye kukosha kwazvino kuyerera kuburikidza navo.
Kana kukora kwefoiri yemhangura kuri 0.05 mm uye hupamhi huri 1 kusvika 15 mm, tembiricha haizove yakakwira kupfuura 3 ° C kuburikidza neizvino ye2 A, saka hupamhi hwewaya 1.5 mm kuzadzisa zvinodiwa.Kwemasekete akabatanidzwa, kunyanya madhijitari edhijitari, waya wakafara we 0.02-0.3 mm inowanzosarudzwa.Zvechokwadi, sezvinobvira, shandisa waya dzakafara, kunyanya simba uye waya dzepasi.
Iyo yakaderera spacing yemakondukita inonyanya kutariswa neakaipisisa-kesi insulation kuramba pakati pemitsara uye kuparara kwemagetsi.Kwemaseketi akabatanidzwa, kunyanya maseketi edhijitari, chero bedzi maitiro achibvumira, gomba rinogona kunge diki se5-8 um.
③ Makona ewaya dzakadhindwa anowanzo kuumbwa-arc, nepo kona dzekurudyi kana makona akasanganisirwa anozokanganisa kushanda kwemagetsi mumaseketi akakwira-frequency.Mukuwedzera, edza kudzivisa kushandisa nzvimbo yakakura yemhangura foil, kana zvisina kudaro, kana inopisa kwenguva yakareba, zviri nyore kukonzera foil yemhangura kuwedzera uye kudonha.Kana nzvimbo yakakura yefoil yemhangura inofanirwa kushandiswa, zviri nani kushandisa chimiro chegidhi, iyo inobatsira kubvisa gasi rinoputika rinogadzirwa neadhesive pakati pefoiri yemhangura uye substrate kana yapisa.
Pad
Gomba repakati pepedhi rakati kurei pane dhayamita yemudziyo unotungamira.Kana iyo padhi yakakura kwazvo, zviri nyore kuumba virtual solder joint.Iyo yekunze dhayamita D yepedhi kazhinji haisi pasi pe d+1.2 mm, apo d ndiyo dhayamita yegomba rekutungamirira.Kune yakakwirira-density dhijitari maseketi, iyo shoma dhayamita yepedhi inogona kuve d+1.0 mm.
PCB bhodhi software kugadzirisa
Nguva yekutumira: Mar-13-2023