Yakadhindwa redunhu bhodhi (PCB) is the support of circuit components and components in electronic products. It provides the electrical connection between circuit components and components. It is the most basic component of various electronic equipment, and its performance is directly related to the quality of electronic equipment. Nekuvandudzwa kwesosaiti yeruzivo, ese marudzi emagetsi zvigadzirwa anowanzo shanda pamwe, uye kupindira pakati pavo kwakanyanya uye kwakanyanya. Naizvozvo, kusangana kwemagetsi nemagetsi kunova kiyi kune yakajairika mashandiro emagetsi system. Saizvozvo, pamwe nekuvandudzwa kwemagetsi tekinoroji, kuwanda kwePCB kuri kuwedzera nekukwira. Hunhu hwePCB dhizaini ine simba rakakura pakuvhiringidza uye anti-kupindira kugona kwedunhu. Pamusoro pekusarudzwa kwezvikamu uye dhizaini dhizaini, yakanaka pcb wiring zvakare yakakosha chinhu mukubatana kwemagetsi ekugadzirisa kuita kwakakwana mashandiro emagetsi maseketi.

Since the PCB is an inherent component of the system, enhancing electromagnetic compatibility in the PCB wiring does not incur additional costs to the final product completion. Nekudaro, mune yakadhindwa redunhu bhodhi dhizaini, zvigadzirwa vagadziri kazhinji vanongoteerera kunatsiridza kuwanda, kudzikisira kugara kwenzvimbo, kugadzirwa kuri nyore, kana kutsvaga kwekutsvinda, yunifomu dhizaini, tichiregeredza kukanganisa kwegadziriro yedunhu pane inoenderana nemagetsi, zvekuti hombe huwandu hweanoratidzira mwaranzi munzvimbo yekuumba kushungurudzwa. Yevarombo pcb wiring inogona kukonzera matambudziko emc akawanda kupfuura zvainogona kubvisa. Muzviitiko zvakawanda, kunyangwe kuwedzera mafirita uye zvinhu hazvigadzirise matambudziko aya. Pakupedzisira, bhodhi rese raifanirwa kudzoreredzwa. Naizvozvo, kuvandudza yakanaka pcb wiring maitiro ndiyo inodhura-inoshanda nzira yekutanga.

Chinhu chimwe chete chekucherechedza ndechekuti hapana mitemo yakasimba yePCB wiring uye hapana mimwe mitemo inovhara wiring yese yePCB. Yakawanda pcb wiring inogumirwa nehukuru hwedunhu bhodhi uye nhamba yematare-akapfeka matanda. Dzimwe nzira dze wiring dzinogona kushandiswa kune rimwe dunhu asi kwete kune imwe dzinoenderana neruzivo rweinjiniya wiring. Iko kune, zvisinei, mimwe yakajairwa mitemo, iyo ichakurukurwa pazasi.

Kune yakanaka dhizaini mhando. Pcb nemutengo wakaderera unofanirwa kutevera zvinotevera zvirevo zvinotevera:

2. Kurongeka kwezvikamu paPCBB

Chekutanga pane zvese, zvakafanira kufunga nezvePCB saizi yakakura kwazvo. Kana saizi pcb yakanyanyisa kukura, mutsetse wakadhindwa wakareba, iyo impedance inowedzera, kugona kurwisa ruzha kunoderera, uye mutengo unowedzera. Zvidiki kwazvo, kupisa kupisa hakuna kunaka, uye mitsara iri padhuze inogona kupindirwa. Mushure mekuona saizi pcb. Wobva watsvaga izvo zvakakosha zvikamu. Chekupedzisira, zvinoenderana neyunoshanda unit redunhu, zvese zvikamu zvedunhu zvakaiswa.

A digital circuit in an electronic device. Analog wedunhu uye emagetsi wedunhu zvinhu dhizaini uye wiring hunhu hwakasiyana, ivo vanogadzira kupindira uye kupindira nzira dzvanyirira dzakasiyana. Also high frequency. Nekuda kweakawandisa akasiyana mafambiro, kukanganiswa kwenzvimbo dzakaderera frequency uye nzira yekudzvinyirira kukanganiswa zvakasiyana. Saka mukumisikidzwa kwechinhu, dhijitari redhiyo inofanirwa kuve. The analog circuit and the power supply circuit are placed separately to separate the high frequency circuit from the low frequency circuit. Kana paine mamiriro, ivo vanofanirwa kusarudzika kana kugadzirwa kuita redunhu bhodhi zvakasiyana. Uye zvakare, iyo dhizaini inofanira zvakare kubhadhara zvakanyanya kune yakasimba. Weak signal device distribution and signal transmission direction.

In printed board layout high speed. Kune epakati-anomhanyisa uye akaderera-anomhanya maseketi emagetsi, izvo zvinongedzo zvinofanirwa kurongedzwa nenzira inoratidzwa muMufananidzo 1-1.

Sezvimwe nezvimwe zvine musoro maseketi, izvo zvinongedzo zvinofanirwa kuiswa padhuze nepazvinogona kune mumwe nemumwe kuti uwane zvirinani kurwisa ruzha mhedzisiro. The position of components on the PRINTED circuit board should take full account of emi. Imwe yemisimboti ndeyekuchengeta iyo inotungamira pakati pezvinhu ipfupi sezvinobvira. Panyaya yemarongerwo, chikamu chechiratidzo cheanalogog, chikamu chedhijitari yedhijitari, uye chikamu chemheremhere (senge relay, switch yepamusoro yazvino, nezvimwewo) inofanirwa kunyatsopatsanurwa kudzikisira coupling yechiratidzo pakati pavo, sezvakaratidzwa mumufananidzo 1 -②.

Clock generator. Crystal oscillator and CPU clock input are prone to noise, to be closer to each other. Noisy devices. Low current circuit. Masekete makuru aripo anofanirwa kuchengetedzwa kure nematanho epfungwa kusvika pazvinogoneka. Izvo zvakakosha kuti uite rakasiyana redunhu bhodhi kana zvichibvira.

2.1 The following principles shall be observed when determining the location of special components: (1) Shorten the connection between high-frequency components as far as possible, and try to reduce their distribution parameters and electromagnetic interference between each other. Zvinhu zvinokanganisa zviri nyore hazvifanirwe kunge zviri padhuze nepadhuze, uye zvekuisa uye zvinobuda zvinofanirwa kunge zviri kure sezvinobvira.

(2) Panogona kuve nemusiyano wepamusoro pakati pezvimwe zvinhu kana mawaya, saka daro pakati pawo rinofanira kuwedzerwa kudzivirira tsaona pfupi redunhu rinokonzerwa nekubuda. Midziyo ine yakakwira voltage inofanirwa kuve isingaite sezvinobvira kuiswa munzvimbo dzisingasvikike nyore neruoko panguva yekugadzirisa.

(3) Zvikamu zvine huremu hunopfuura 15g. Inofanira kunge yakasungwa uye yobva yaiswa simbi. Izvo zvakakura uye zvinorema. Izvo zvinhu zvine yakakwira calorific kukosha hazvifanire kuiswa pane yakadhindwa bhodhi, asi pane chassis yemuchina wese, uye dambudziko rekupisa kupisa rinofanira kutariswa. Zvinhu zvinopisa zvinofanirwa kuchengetedzwa kure nezvinodziya.

(4) ye potentiometer. Adjustable inductor coil. Shanduka capacitor. Kurongeka kwezvinhu zvinogadziriswa zvakaita se microswitch inofanirwa kufunga nezve zvimiro zvemuchina wese. Kana iyo muchina kugadzirisa, inofanirwa kuiswa pane yakadhindwa bhodhi pamusoro zviri nyore kugadzirisa nzvimbo; Kana muchina ukagadziridzwa kunze, chinzvimbo chayo chinofanirwa kuchinjiswa kune chinzvimbo chekugadzirisa pfundo pane chassis pani.

(5) Chinzvimbo chinogarwa nenzvimbo yekumisikidza uye kugadzirisa bracket yebhodhi rakadhindwa rinofanira kuiswa parutivi.

2.2 Kurongeka kwezvinhu zvese zvedunhu zvinoenderana nezvikamu zvinoshanda zvedunhu zvinoenderana nemisimboti inotevera:

(1) Ronga chinzvimbo chega chega chinoshanda wedunhu unit zvinoenderana nedanho, kuitira kuti marongero acho ave nyore pakuyerera kwechiratidzo uye chiratidzo chinochengeta iwo iwo iwo madireko kusvika pazvinogona.

(2) Kune epakati zvikamu zveimwe dunhu rinoshanda senzvimbo, kutenderedza kuitisa marongerwo. Zvikamu zvinofanirwa kunge zvakafanana. Uye yakachena. Yakarongeka compact paPCB kudzikisira uye kupfupisa inotungamira uye kubatana pakati pezvinhu. (3) Kune macircuit anoshanda kumatunhu akakwirira, miganho yakaparadzirwa pakati pezvinhu inofanirwa kutariswa. Mune maseketi akajairika, zvikamu zvinofanirwa kurongedzwa zvakafanana sezvinobvira. Nenzira iyi, kwete yakanaka chete, uye yakapfava kuisa kutenderera, iri nyore kugadzirwa kwemazhinji.

(4) Zvikamu zviri kumucheto kwebhodhi redunhu, kazhinji hazvisi pasi pe2mm kubva kumucheto webhodhi redunhu. Chimiro chakanakisa chebhodhi redunhu itswere. Kureba kusvika paupamhi reshiyo 3: 2 kana 4: 3. Saizi yebhodhi redunhu yakakura kudarika 200x150mm. Kufungirwa kunofanirwa kupihwa kune iyo michina simba redunhu bhodhi.

2.3 General marongero anodikanwa ezvePCB zvinhu:

Maseketi zvinhu uye nzira dzemasaini dzinofanirwa kuiswa kuti kudzikise kubatanidzwa kwemasaini asingadiwe:

(1) Iyo yakaderera magetsi chiratidzo chiteshi haifanire kunge iri padhuze neiyo yepamusoro nhanho chiratidzo chiteshi uye tambo yemagetsi isina kusefa, kusanganisira iyo dunhu inogona kuburitsa inopfuura maitiro.

(2) Patsanura yakaderera nhanho analoginen redunhu kubva kudigital wedunhu kudzivirira analoginog redunhu. Dhijitari redunhu uye yakajairika chiuno chemagetsi chinogadzira zvakajairika impedance yekubatanidza.

(3) kukwirira. Mu. Yakaderera kumhanya zvine musoro masekete anoshandisa nzvimbo dzakasiyana paPCB.

(4) Kureba kwetambo yechiratidzo kunofanira kudzikiswa panorongwa dunhu

(5) Iva nechokwadi pakati pemahwendefa ari pedyo. Pakati pezvikamu zvakatarisana zvebhodhi rimwe chete. Hauna tambo dzakareba dzakaenzana dzakatarisana pakati petambo dzepedyo panzvimbo imwechete.

(6) Electromagnetic kupindira (EMI) firita inofanirwa kunge iri padhuze ne EMI sosi sezvinobvira uye iiswe pane imwechete wedunhu bhodhi.

(7) DC / DC inoshandura. Kuchinja zvinhu uye zvigadziriso zvinofanirwa kuiswa padhuze neshanduko sezvinobvira kudzikisa kureba kwetambo dzavo

(8) Isa iyo voltage inodzora chinhu uye sefa capacitor padyo padyo sezvinobvira kune inogadzirisa diode.

(9) Bhodhi rakadhindwa rakakamurwa zvinoenderana neyakawandisa uye yazvino switching hunhu, uye ruzha chinhu uye isiri ruzha chinhu chinofanira kunge chiri kure kure.

(10) Iyo wiring-inonzwika wiring haifanire kunge ichienderana neiyo yepamusoro-yazvino, yepamusoro-yekumhanyisa switch switch.