Ha e fihla ho PCB moralo, meeli e hlahisitsoeng ke matla a hona joale a wiring ea PCB e bohlokoa.

Bokhoni ba hona joale ba wiring ho PCB bo khethoa ke mekhahlelo e joalo ka bophara ba wiring, botenya ba wiring, mocheso o phahameng o hlokahalang, hore na wiring e ka hare kapa kantle, le hore na e koahetsoe ke ts’ireletso ea ts’ebetsong.

Sehloohong sena, re tla tšohla tse latelang:

e ‘ngoe PCB bophara ke eng?

Wiring ea PCB kapa mokhanni oa koporo ho PCB, a ka tsamaisa lets’oao holim’a PCB. The etching leaves a narrow section of copper foil, and the current flowing through the copper wire generates a lot of heat. E lekantsoe ka nepo bophara le likhoele tsa PCB li thusa ho fokotsa mocheso ho kenella ka sekepeng. Ha bophara ba mola e le bophara, ho hana ho hanyetsa hona joale, le ho bokellana ha mocheso hanyane. PCB wiring bophara ke teba tshekaletseng le botenya ke teba paatsepama.

Moralo oa PCB o lula o qala ka bophara ba mohala oa mantlha. Leha ho le joalo, bophara ba mola ona oa kamehla ha se kamehla bo loketseng PCB e batlang. Lebaka ke hore o hloka ho nahana ka matla a hona joale a wiring ho tseba bophara ba wiring.

Ha u khetha bophara ba mola o nepahetseng, nahana ka lintlha tse ‘maloa:

1. Botenya ba koporo – Botenya ba koporo ke botenya ba nnete ba wiring ho PCB. Botenya ba koporo ba mantlha bakeng sa li-PCBS tsa morao-rao ke ounce (1 micron) ho isa ho 35 ounce (2 micron).

2. Sebaka se tsamaeang ka mahlakore a mabeli sa mokhanni – Ho ba le matla a phahameng a PCB, ho hlokahala hore ho be le sebaka se seholo sa likarolo tsa mokhanni, se lekanang le bophara ba mokhanni.

3. Sebaka sa trace – tlase kapa holimo kapa kahare.

‘meli Tsela ea ho meralo phahameng hona joale PCB?

Digital circuits, RF circuits and power circuits mainly process or transmit low power signals. The copper in these circuits weighs 1-2Oz and carries a current of 1A or 2A. Liketsong tse ling, joalo ka taolo ea makoloi, hona joale ho hlokahala 50-XNUMX, e tla hloka koporo e ngata ho PCB le bophara ba terata.

Mokhoa oa moralo bakeng sa litlhoko tse phahameng tsa hona joale ke ho holisa likhoele tsa koporo le ho eketsa botenya ba wiring ho 2OZ. Sena se tla eketsa sebaka ka sekepeng kapa se eketse palo ea likarolo tsa PCB.

3. Mekhoa e phahameng ea hona joale ea moralo oa PCB:

Reduce the length of high-current cabling

Mehala e melelele e na le khanyetso e phahameng ebile e na le ea hajoale e phahameng, e lebisang ho tahlehelo e phahameng ea motlakase. Hobane tahlehelo ea motlakase e hlahisa mocheso, bophelo ba boto ea potoloho bo khutsufalitsoe.

Bala bophara ba wiring ha mocheso o loketseng o phahama le ho oa

Bophara ba mola ke mosebetsi oa mefuta-futa e kang ho hanyetsa le hona joale ho phalla ka eona le mocheso o lumelloang. Ka kakaretso, mocheso o nyolohang ka 10 ℃ o lumelloa maemong a leholimo a fetang 25 ℃. If the material and design of the plate allow, even a temperature rise of 20°C can be allowed.

Qoba likarolo tse hlokolosi ho tsoa maemong a phahameng a mocheso

Lisebelisoa tse ling tsa elektroniki, joalo ka lits’oants’o tsa motlakase, li-converter tsa analog-to-dijithale le li-amplifiers tse sebetsang, li nahanela liphetoho tsa mocheso. Ha likarolo tsena li futhumetse, matšoao a tsona a fetoha.

Lipoleiti tse phahameng tsa hajoale li tsejoa li hlahisa mocheso, kahoo likarolo li hloka ho bolokoa hole le libaka tse nang le mocheso o phahameng. U ka etsa sena ka ho etsa masoba ka har’a boto le ho fana ka mocheso oa mocheso.

Tlosa lera la ho hanyetsa solder

Ho eketsa phallo ea ha joale ea terata, lera la mokoallo oa solder le ka tlosoa mme koporo e ka tlasa lona ea pepesoa. Solder e ngoe e kanna ea eketsoa terateng, e tla eketsa botenya ba terata le ho fokotsa boleng ba ho hanyetsa. Sena se tla lumella hore hajoale ho phalla ka terata ntle le ho eketsa bophara ba terata kapa ho eketsa botenya ba koporo.

Lera le ka hare le sebelisetsoa likhoele tsa morao-rao

Ha lera le ka ntle la PCB ha le na sebaka se lekaneng bakeng sa wiring e tenya, wiring e ka tlatsoa ka lera le ka hare la PCB. Ka mor’a moo, o ka sebelisa khokahano ea lesoba ho sesebelisoa sa kantle se phahameng.

Kenya mabanta a koporo bakeng sa hajoale

Bakeng sa likoloi tsa motlakase le li-inverters tse nang le matla a phahameng tse nang le 100A ea hajoale e fetang, koporo ea koporo e kanna ea se be eona tsela e ntle ea ho fetisa matla le matšoao. Tabeng ena, o ka sebelisa mekoallo ea koporo e ka rekisoang ho pad ea PCB. Mokoallo oa koporo o motenya haholo ho feta terata mme o ka tsamaisa maqhubu a maholo kamoo ho hlokahalang ntle le mathata a ho futhumatsa.

Sebelisa suture e phunyang ka masoba ho tsamaisa lithapo tse ngata holima likarolo tse ngata tsa hajoale tse phahameng

Ha cabling e sa khone ho jara ha joale e lakatsehang ka lera le le leng, cabling e ka fetisoa ka mekhahlelo e mengata ebe e phekoloa ka ho kopanya likarolo hammoho. Tabeng ea botenya bo ts’oanang ba mekhahlelo e ‘meli, sena se tla eketsa bokhoni ba hona joale.

bofello

Ho na le lintlha tse ngata tse rarahaneng tse khethollang matla a hona joale a wiring. Leha ho le joalo, baqapi ba PCB ba ka ts’epa ho ts’epahala ha li-calculator tsa botenya ba line ho thusa ho rala liboto tsa bona hantle. Ha o rala PCBS e ts’epahallang le e sebetsang hantle, boemo bo nepahetseng ba bophara ba mohala le matla a hona joale a ho tsamaisa li ka tsamaea hole.