CCL (Copper Clad Laminate) shine ɗaukar sararin sarari akan PCB azaman matakin tunani, sannan a cika shi da tagulla mai ƙarfi, wanda kuma aka sani da zubar da tagulla.
Muhimmancin CCL kamar haka:
- rage kasa impedance da inganta anti-tsangwama ikon
- rage raguwar wutar lantarki da inganta ƙarfin wutar lantarki
- haɗa zuwa ƙasa kuma yana iya rage yankin madauki.
Kamar yadda wani muhimmin mahada na PCB zane, ba tare da la'akari da gida Qingyue Feng PCB zane software, kuma wasu kasashen waje Protel, PowerPCB sun bayar da fasaha tagulla aiki, don haka yadda za a yi amfani da kyau jan karfe, Zan raba wasu na kaina ra'ayoyi tare da ku, fatan kawo. amfani ga masana'antu.
Yanzu don yin walda na PCB kamar yadda zai yiwu ba tare da nakasawa ba, yawancin masana'antun PCB kuma za su buƙaci mai tsara PCB ya cika buɗaɗɗen wurin PCB da tagulla ko waya ta ƙasa kamar grid. Idan ba a kula da CCL da kyau ba, zai haifar da ƙarin sakamako mara kyau. Shin CCL "ya fi kyau fiye da cutarwa" ko "ya fi kyau fiye da kyau"?
A karkashin yanayin high mita, zai yi aiki a kan buga kewaye hukumar wayoyi capacitance, lokacin da tsawon ne fiye da 1/20 na amo mita m wavelength, sa'an nan zai iya samar da eriya sakamako, da amo zai kaddamar da fita ta hanyar wayoyi, idan akwai mummunan grounding CCL a cikin PCB, CCL ya zama kayan aiki na watsa amo, sabili da haka, a cikin babban mita mita, kada ku yi imani cewa idan kun haɗa waya ta ƙasa zuwa ƙasa a wani wuri, wannan shine "ƙasa", A gaskiya ma. , Dole ne ya zama ƙasa da tazarar λ/20, buga rami a cikin cabling da multilayer ƙasa jirgin "ƙasa sosai". Idan an kula da CCL da kyau, ba zai iya ƙara yawan halin yanzu ba, amma kuma yana taka rawa biyu na tsoma baki.
Akwai hanyoyi guda biyu na asali na CCL, wato babban yanki na jan karfe da tagulla, sau da yawa kuma ana tambaya, wanne ne mafi kyau, yana da wuya a faɗi. Me yasa? Babban yanki na CCL, tare da karuwa na halin yanzu da garkuwa dual rawar, amma akwai babban yanki na CCL, hukumar na iya zama warped, ko da kumfa idan ta hanyar igiyar ruwa soldering.Saboda haka, kullum za ta bude ƴan ramummuka don rage rage. bubbling jan karfe, A raga CCL ne yafi garkuwa, ƙara da rawa na halin yanzu an rage, Daga hangen zaman gaba zafi dissipation, grid yana da amfani (yana rage dumama surface na jan karfe) da kuma taka wani rawa na electromagnetic garkuwa. Amma ya kamata a nuna cewa grid da aka yi ta hanyar alternating shugabanci na Gudu, mun sani ga layin nisa ga aikin mita na kewaye hukumar yana da m "lantarki" tsawon (ainihin girman raba da aiki mita na daidai dijital. mita, kankare littattafai), lokacin da mitar aiki ba ta da yawa, watakila rawar da layin grid ba a bayyane yake ba, da zarar tsayin wutar lantarki da daidaita mitar aiki, ya yi muni sosai, za ku ga cewa kewaye ba za ta yi aiki yadda ya kamata ba, Tsarin tsangwama siginar watsi yana aiki a ko'ina.Saboda haka, ga waɗanda ke amfani da grid, shawarata ita ce zabar bisa ga yanayin aiki na ƙirar allon kewayawa, maimakon riƙe da abu ɗaya. grid mai amfani da yawa, ƙananan mitar da'ira tare da babban da'irar yanzu da sauran cikakken jan ƙarfe na wucin gadi da aka saba amfani da shi.
A kan CCL, domin mu bar shi don cimma tasirin da ake sa ran, to, sassan CCL suna buƙatar kula da irin matsalolin:
1. Idan ƙasa na PCB ne mafi, da SGND, AGND, GND, da dai sauransu, za a dogara ne a kan matsayi na PCB hukumar fuska, bi da bi don yin babban "ƙasa" a matsayin tunani batu ga m CCL, zuwa dijital da kuma analog don raba jan karfe, kafin samar da CCL, da farko, m m m ikon igiyoyin: 5.0 V, 3.3 V, da dai sauransu, ta wannan hanya, da dama daban-daban siffofi da aka kafa more nakasawa tsarin.
2. Don haɗin batu guda ɗaya na wurare daban-daban, hanyar ita ce haɗi ta hanyar 0 ohm juriya ko ƙwanƙwasa magnetic ko inductance;
3. CCL kusa da oscillator crystal. The crystal oscillator a cikin da'irar shi ne babban mitar watsi. Hanyar ita ce a kewaye kristal oscillator da jan karfe sannan a niƙa harsashin oscillator na crystal daban.
4.Matsalar matattu zone, idan ji yana da girma sosai, to ƙara ƙasa via a kai.
5. A farkon wiring, ya kamata a bi da shi daidai da na'ura mai ba da hanya tsakanin hanyoyin sadarwa, ya kamata mu yi amfani da ƙasa da kyau a lokacin da ake amfani da wayoyi, ba za a iya dogara da ƙara vias ba lokacin da aka gama CCL don kawar da fil ɗin ƙasa don haɗin gwiwa, wannan sakamako yana da kyau sosai. mara kyau.
6. Zai fi kyau kada a sami kusurwa mai kaifi a kan jirgi (= 180 °), saboda daga ra'ayi na electromagnetism, wannan zai samar da eriya mai watsawa, don haka ina ba da shawarar yin amfani da gefuna na arc.
7. Multilayer tsakiyar Layer wiring spare area, kar a tagulla, domin yana da wuya a yi CCL zuwa "ƙasa"
8.karfe da ke cikin kayan aiki, irin su radiator na ƙarfe, shingen ƙarfafa ƙarfe, dole ne a cimma "ƙasa mai kyau".
9.The sanyaya karfe block na uku m ƙarfin lantarki stabilizer da grounding kadaici bel kusa da crystal oscillator dole ne a da kyau grounded. A cikin kalma: CCL akan PCB, idan an magance matsalar ƙasa da kyau, dole ne ya zama “mafi kyau fiye da mara kyau”, yana iya rage siginar dawo da layin siginar, rage tsangwama na siginar waje.