Yakadhindwa Circuit Board (PCB), inozivikanwawo sePrinted Circuit Board (PCB), inoshandiswa kubatanidza nekushanda zvinhu zvemagetsi uye chikamu chakakosha chesimba Circuit dhizaini. Ichi chinyorwa chichaunza iyo yakakosha mitemo yePBB dhizaini uye wiring.

Tsanangura zvakadzama mitemo yepcbc bhodhi dhizaini uye wiring

Mitemo yakakosha yegadziriro yechikamu

1. Maererano nekugadzirisa kwema modules emagetsi, dunhu rakabatana kuti riite basa rimwechete rinonzi module, zvikamu mumodhi yedunhu inofanira kutora musimboti wehutano huri pedyo, uye dhijiti yedhijiti uye analog circuit inofanira kuparadzaniswa;

2. Zvikamu, zvishandiso uye screws hazvifanirwe kuiswa mukati me3.5mm (yeM2.5) uye 4mm (yeM3) yakatenderedza maburi asingakwire akadai semaburi ekumisa uye maburi akajairika mukati me1.27mm;

3. Horizontal kuramba, inductor (plug-in), electrolytic capacitor uye zvimwe zvinoriumba pasi jira gomba, kuitira kudzivisa wave soldering gomba uye chikamu goko pfupi redunhu;

4. Chikamu chekunze chechikamu chiri 5mm kubva pamucheto weplate;

5. Nhambwe iri pakati perutivi rwekunze rwepadhi yechinhu chinosungirirwa uye rutivi rwekunze rwechinhu chiri pedyo chekuisa chinopfuura 2mm;

6. Metal shell components uye metal parts (shielding boxes, etc.) haigoni kubata zvimwe zvikamu, haigoni kuva pedyo nemutsara wakadhindwa, pad, nzvimbo yacho inofanira kuva yakakura kudarika 2mm. Hukuru hwekuisa maburi, maburi ekumisikidza, maburi e elliptic uye mamwe maburi akaenzana mundiro akakura kupfuura 3mm kubva padivi replate;

7. Zvinhu zvinopisa hazvifaniri kuva pedyo netambo uye zvinhu zvinopisa; Zvigadzirwa zvekupisa zvakanyanya zvinofanira kugoverwa zvakaenzana;

8. Chigadziko chemagetsi chinofanira kurongedzerwa zvakapoteredza bhodhi rakadhindwa sezvinobvira, uye wiring terminal yemagetsi emagetsi uye busbar yakabatanidzwa nayo inofanira kurongwa kune rumwe rutivi. Kunyanya, usaise zvigadziko zvemagetsi uye zvimwe zvinongedzo zvekubatanidza pakati pezvikoni kuti zvifambise kukwenenzverwa kwezvigadziko izvi uye zvibatanidza uye dhizaini uye wiring yetambo dzemagetsi. Kupatsanurwa kwezvigadziko zvemagetsi uye welding zvinobatanidza zvinofanirwa kutariswa kufambisa kuiswa uye kubviswa kwemapulagi emagetsi;

9. Kurongwa kwezvimwe zvinhu:

Zvese IC zvikamu zvinofanirwa kuenderana unilaterally, uye polarity mamaki epolar zvinhu zvinofanirwa kuve zvakajeka. Polarity marks pabhodhi rakadhindwa rimwechete harifanire kunge richidarika mativi maviri. Kana mativi maviri achinge aonekwa, iwo maviri mafambiro anofanira kunge ari perpendicular kune mumwe nemumwe.

10, iyo wiring yepamusoro inofanirwa kunge yakaoma, kana density mutsauko wakakura kwazvo unofanirwa kuzadzwa nemamesh copper foil, iyo grid yakakura kupfuura 8mil (kana 0.2mm);

11, iyo chigamba padhi haigone kuburikidza nemaburi, kuitira kudzivirira kurasikirwa kweiyo solder kunoguma mune chaiyo yekutengesa zvinhu. Mutsara wakakosha wechiratidzo haubvumirwi kupfuura netsoka yesocket;

12, chigamba unilateral kurongeka, inopindirana hunhu kutungamira, inopindirana yekurongedza nzira;

13. Zvishandiso zvePolar zvinofanirwa kuiswa mucherechedzo munzira imwechete sezvinobvira pabhodhi rimwechete.

Chechipiri, chikamu chemutemo wiring

1. Dhirowa nzvimbo ye wiring mukati menharaunda ≤1mm kubva kuPCB board kumucheto, uye mukati me1mm kumativi egomba rinosungirirwa, uye kurambidza wiring;

2. Mutsara wemagetsi wakafara sezvinobvira, haufaniri kuva pasi pe18mil; Chiratidzo mutsara wakafara haufanire kunge uri pasi pe12mil; CPU inopinda uye inobuda mitsetse haifanirwe kunge iri pasi pe10mil (kana 8mil); Line spacing isiri pasi pe10mil;

3. Gomba rakajairwa harisi pasi pe30mil;

4. Kaviri mutsara kuisa: pad 60mil, aperture 40mil;

1/4W kushorwa: 51 * 55mil (0805 pepa); Yakananga pinza padhi 62mil, aperture 42mil;

Non-polar capacitor: 51 * 55mil (0805 sheet); Yakananga pinza padhi 50mil, aperture 28mil;

5. Cherechedza kuti tambo dzemagetsi uye tambo dzepasi dzinofanira kunge dziri radial sezvinobvira, uye tambo dzechiratidzo hadzifaniri kuvharwa.

Maitiro ekuvandudza anti-kupindira kugona uye electromagnetic kuenderana?

Maitiro ekuvandudza anti-kupindirana kugona uye yemagetsi kuenderana kana uchigadzira zvigadzirwa zvemagetsi ne processor?

1. Mamwe eanotevera masisitimu anofanirwa kutarisisa kune anti-electromagnetic kukanganiswa:

(1) microcontroller wachi frequency inonyanya kukwirira, bhazi kutenderera kwakanyanya kukurumidza system.

(2) Iyo sisitimu ine yakakwira-simba, yakakwira-ikozvino yekutyaira, senge spark inogadzira relay, yakakwira-ikozvino switch, nezvimwe.

(3) system ine isina simba analog chiratidzo wedunhu uye yakanyanya kunyatsoita A / D kutendeuka wedunhu.

2. Matanho anotevera anotorwa kuwedzera anti-electromagnetic kupindira kugona kweiyo system:

(1) Sarudza microcontroller ine yakaderera frequency:

Iyo microcontroller ine yakaderera yekunze wachi frequency inogona kunyatso kudzora ruzha uye kugadzirisa iyo inopesana-nekukanganisa kugona kweiyo system. Square wave uye sine wave ine frequency yakafanana, iyo yakakwira frequency chikamu chesquare wave yakawanda kupfuura sine wave. Kunyangwe ukuru hweiyo yakakwira frequency chikamu chechikwiriso wave chiri chidiki pane icho chakakosha chinozunguzirwa, iko kukwirira kweiyo frequency, zviri nyore kwazvo kuburitsa uye kuva ruzha sosi. Iyo yakanyanya kupesvedzera yakakwirira frequency ruzha inogadzirwa neiyo microcontroller ingangoita 3 nguva dzewachi frequency.

(2) Deredza kukanganisa mukufambiswa kwechiratidzo

Microcontrollers inonyanya kugadzirwa nepamusoro-kumhanya CMOS tekinoroji. Static yekupinda ikozvino chiratidzo chekuisa panenge 1 ma, yakatenderedza gumi pf mune yekuisa capacitance, yakakwira yekupinza impedance, yakakwira yekumhanyisa CMOS dunhu zvinobuda zvakaringana pamutoro wekutakura, kureva kukosha kwakawanda kwekubuda, kupera kwegonhi kuburikidza nekurebesa kutungamira. kune yakakwira yekupinza, iyo yekupinza impedance yekuratidzira dambudziko rakanyanya, rinokonzeresa kukanganisa chiratidzo, Wedzera ruzha rwehurongwa. Kana Tpd “Tr”, inova dambudziko rekutapurirana, inofanirwa kufunga nezvechiratidzo chiratidzo, impedance inoenderana uye zvichingodaro.

Iyo nguva yekunonoka yechiratidzo pabhodhi rakadhindwa inoenderana nehunhu hwekudzivirira kwekutungamira, ndiko kuti, kune dielectric inongogara yeakadhindwa bhodhi zvinhu. Zviratidzo zvinogona kufungidzirwa kufamba pakati pe1/3 uye 1/2 kumhanya kwechiedza pamusoro pePCB inotungamira. Iyo Tr (yakajairwa kunonoka nguva) yezvinhu zvefoni zvine musoro zvinowanzoshandiswa mumasisitimu anogadzirwa ne microcontrollers iri pakati pe3 ne18ns.

Pane rakadhindwa redunhu bhodhi, iyo chiratidzo inopfuura ne7W resistor uye 25cm lead, iine pa-line kunonoka kweinenge 4 kusvika 20ns. Ndokureva kuti, chiratidzo pamutsara wakadhindwa unotungamira kupfupika sezvinobvira, kureba hakufanirwe kudarika 25cm. Uye huwandu hwemakomba hunofanirwa kunge hushoma sezvinobvira, zvakanyanya kwete kupfuura maviri.

Kana nguva yekusimuka kwechiratidzo ichikurumidza kupfuura nguva yekunonoka kwechiratidzo, magetsi ekukurumidza anoiswa. Panguva ino, iyo impedance inoenderana netambo yekufambisa inofanirwa kutariswa. Zvekufambisa masaini pakati penzvimbo dzakabatanidzwa pane PRINTED redunhu bhodhi, Td Trd inofanirwa kudzivirirwa. Iyo yakakura iyo yakadhindwa redunhu bhodhi, iyo inokurumidza sisitimu haigone kukurumidza.