Idan an tambaye ku ko wane launi ne allon kewayawa, na yi imani da farko martanin kowa kore ne. Tabbas, yawancin samfuran da aka gama a cikin masana'antar PCB kore ne. Amma tare da haɓaka fasahar fasaha da bukatun abokan ciniki, launuka iri-iri sun fito. Komawa tushen, me yasa allunan galibi kore ne? Bari mu yi magana game da shi a yau!
Bangaren kore ana kiransa shingen siyarwa. Wadannan sinadarai sune resins da pigments, ɓangaren kore shine kore pigments, amma tare da haɓaka fasahar zamani, an ƙara zuwa wasu launuka masu yawa. Ba shi da bambanci da fenti na ado. Kafin a buga soldering a kan allon kewayawa, juriya na solder yana manna kuma yana gudana. Bayan an buga a allon da’ira, resin yana taurare saboda zafi kuma a ƙarshe “yana warkarwa.” Manufar juriya waldi ne don hana kewaye hukumar daga danshi, hadawan abu da iskar shaka da ƙura. Wurin da ba a rufe shi da shingen saida galibi ana kiransa pad kuma ana amfani da shi don manna.
Gabaɗaya, muna zaɓar kore saboda ba ya fusatar da idanu, kuma ba shi da sauƙi ga samarwa da ma'aikatan kulawa su kalli PCB na dogon lokaci. A cikin zane, launukan da aka saba amfani da su sune rawaya, baki da ja. Ana fentin launuka a saman bayan an yi shi.
Wani dalili kuma shi ne, launin da aka fi amfani da shi shi ne kore, don haka masana’anta ke da filaye da koren fenti, don haka farashin mai ya yi kadan. Wannan kuma saboda lokacin yin hidimar allon PCB, wayoyi daban-daban suna da sauƙin bambanta da fari, yayin da baki da fari suna da wahalar gani. Domin bambance maki samfurinsa, kowace masana'anta tana amfani da launuka biyu don bambance babban silsilar daga jerin ƙananan ƙarshen. Misali, Asus, kamfanin motherboard na kwamfuta, allon rawaya yana da ƙarancin ƙarewa, allo mai tsayi. Komawar Yintai yana da tsayi, kuma koren allo ba shi da ƙaranci.
1. Akwai alamomi akan allon kewayawa: farkon R shine resistor, farkon L shine inductor coil (yawanci ana raunata coil a kusa da zoben ƙarfe na ƙarfe, an rufe wasu gidaje), farkon C shine capacitor (tsawo mai tsayi, wanda aka nannade da filastik, masu ƙarfin lantarki tare da giciye indentation, flat chip capacitors), sauran ƙafafu biyun diodes ne, ƙafafu uku transistor ne, kuma ƙafafu da yawa sun haɗa da da'irori.
2, thyristor mai gyara UR; Da'irar sarrafawa yana da mai gyara wutar lantarki VC; Mai juyawa UF; Mai canzawa UC; Inverter UI; Motoci M; Motar Asynchronous MA; Motar aiki tare MS; Injin MD; Rauni-rotor induction motor MW; Squirrel keji motor MC; Wutar lantarki YM; Solenoid bawul YV, da dai sauransu.
3, tsawaita karantawa a haɗe sashin zane akan babban allon allon da'irar sunan bayanin bayanin.
Lokacin aikawa: Afrilu-16-2024
