Me yasa yake da mahimmanci a kiyaye tsaftar PCB naka?

Lokacin warware matsalar da'irori marasa aiki ko rashin aiki mara kyau, injiniyoyi galibi suna iya gudanar da siminti ko wasu kayan aikin bincike don yin la'akari da kewaye a matakin ƙira. Idan waɗannan hanyoyin ba su magance matsalar ba, hatta ƙwararrun injiniyoyi za su iya yin tuntuɓe, takaici, ko ruɗe. Ni ma na fuskanci wannan zafin. Don guje wa bugun matattu irin wannan, bari in gabatar muku da wata hanya mai sauƙi amma mai mahimmanci: kiyaye shi a tsabta!

Me nake nufi da hakan? Wannan ya ce, wasu kayan da aka yi amfani da su yayin taron PCB ko gyare-gyare na iya haifar da matsalolin ayyuka masu tsanani idan PCB ba a kiyaye shi da tsabta ba. Ɗaya daga cikin matsalolin da aka fi sani da wannan al'amari shine juyi.

 

Hoto na 1 yana nuna PCB tare da ragowar juzu'i masu yawa.

Flux wani sinadari ne da ake amfani da shi don taimakawa wajen siyar da kayan aikin zuwa PCB. Abin baƙin ciki ko da yake, idan ba a cire ba bayan sayar da, juyi na iya ƙasƙantar da juriya na PCB, haifar da mummunar lalacewa a cikin aikin da'ira a cikin tsari!

siffa 2

Hoto na 2 da'irar gwaji ce da na yi amfani da ita don nuna sakamakon gurɓataccen ruwa. Daidaitaccen hanyar sadarwar gada ta Wheatstone wanda aka kunna ta hanyar wutar lantarki ta 2.5V tana kwaikwayi firikwensin gada mai ƙarfi. Ana iya haɗa firikwensin gada daban-daban VIN + - VIN- zuwa INA333 tare da samun 101V/V. A cikin kyakkyawar duniya, tunda gadar tana cikin daidaito, VIN + - VIN- = 0V. Amma gurɓataccen yanayi na iya haifar da ainihin ƙarfin firikwensin gada don yin shuɗi a hankali akan lokaci.

A cikin wannan gwajin, bayan taro, na kuma rubuta canje-canje a cikin VIN- da VOUT na awa ɗaya bayan matakan tsaftacewa daban-daban:

1.Ba mai tsabta;

2.Clean da hannu da bushe iska;

3.Ultrasonic tsaftacewa, iska bushewa, yin burodi.

siffa 3

Kamar yadda ake iya gani a cikin Hoto na 3, gurɓataccen ruwa yana da tasiri mai tsanani akan aikin fitarwa na firikwensin gada. Ba tare da tsaftacewa ko tsaftace hannu ba, ƙarfin firikwensin gada bai taɓa kaiwa ga ƙarfin da ake tsammani na kusan VREF/2 ba, koda bayan lokacin daidaitawa na sa'a ɗaya. Bugu da kari, allunan da'ira da ba su da tsabta suma suna nuna gagarumin tarin hayaniyar waje. Bayan tsaftacewa tare da wanka na ultrasonic da bushewa gaba ɗaya, ƙarfin firikwensin gada ya kasance mai ƙarfi.

siffa 4

Duban ƙarfin fitarwa na INA333, muna ci gaba da ganin lalacewar aikin da ya haifar da tsaftacewa mara kyau.

1.Alamomin da ba su da tsabta sun nuna kurakuran DC, tsawon lokacin daidaitawa, da kuma ɗaukar hayaniya mai tsanani;

2.Manual tsabtace kewaye allon nuna m sosai low mita amo. A ƙarshe na sami dalilin - madauki na kwandishan ne a cikin wurin gwaji!

3.Kamar yadda aka sa ran, busassun allunan da aka tsabtace da kyau sun yi kyau sosai, ba tare da wani drift da ke faruwa a kowane lokaci yayin gwajin ba.

 

A taƙaice, tsaftacewar juzu'i mara kyau na iya haifar da ɓarna mai tsanani, musamman a madaidaicin da'irori na DC. Kamar yadda yake tare da duk PCBs na hannu ko gyara, tabbatar da amfani da wanka na ultrasonic (ko irin wannan hanya) don tsaftacewa ta ƙarshe. Gasa PCB ɗin da aka haɗa tare da tsaftacewa a ɗan ƙaramin zafin jiki don cire duk wani ɗanshi da ya rage bayan bushewar iska ta amfani da kwampreso na iska. Kullum muna yin gasa a 70 ° C na minti 10.

Wannan sauki "tsaftace shi" tukwici ya kamata ya taimaka muku rage ƙarancin lokaci don magance matsala da ƙarin lokacin ƙira mafi girma, daidaitattun da'irori!

 

Xuange Electronicsya himmatu wajen zama jagorar masana'antar abubuwan maganadisu a duniya, yana ba da samfuran daidaitattun samfuran ba kawai har ma da ayyukan ƙira na musamman don baiwa abokan ciniki damar cimma kyakkyawan sakamako. Duk kayan da aka yi amfani da su a cikin samfuran sun wuce UL/CEtakardar shaidakuma sun yi tsauraran gwaji da dubawa kafin jigilar kaya don tabbatar da ingantaccen inganci da tabbatar da abokan ciniki. Amintaccen abokin tarayya ne na dogon lokaci na manyan masana'antun samar da wutar lantarki na yau da kullun!
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William (General Manager Sales)

186 8873 0868 (Whats app/We-Chat)

E-Mail: sales@xuangedz.com liwei202305@gmail.com

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E-Mail: sales01@xuangedz.com

(Mai sarrafa kasuwanci)

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