一, The capacitance na LED nuni kewaye allon ya lalace
Rashin lalacewa ta hanyar lalacewar capacitor shine mafi girma a cikin kayan lantarki, musamman lalacewar wutar lantarki.Lalacewar Capacitor yana bayyana kamar: 1. rage ƙarfin aiki;2. Cikakken asarar iya aiki;3. Yale;4. Gajeren kewayawa.
二, Lalacewar juriya
Ya zama ruwan dare ganin yawancin masu farawa suna firgita da resistors yayin gyaran allunan da'ira, ko dai suna wargajewa ko kuma sayar da su.A zahiri, tare da ƙarin gyare-gyare, muddin kun fahimci halayen lalacewar resistors, ba kwa buƙatar damuwa da yawa.Juriya ita ce mafi girma a cikin kayan lantarki, amma ba shine bangaren da ke da mafi girman lalacewa ba.Lalacewar juriya ya fi zama ruwan dare a buɗaɗɗen da'irori, tare da haɓaka ƙimar juriya yana da wuya kuma rage ƙimar juriya ba kasafai ba ne.Nau'o'in gama gari sun haɗa da resistors na fim ɗin carbon, resistors film resistors, waya rauni resistors, da fuse resistors.Za mu iya fara lura idan akwai alamun ƙona baƙar fata akan ƙarancin juriya akan allon kewayawa.Dangane da halaye na mafi yawan buɗaɗɗen da'irori ko haɓaka juriya lokacin da juriya ta lalace, kazalika da yanayin juriya mai ƙarfi don samun sauƙin lalacewa, zamu iya amfani da multimeter don auna ƙimar juriya kai tsaye a ƙarshen duka ƙarshen juriya mai tsayi akan. da kewaye allon.Idan ƙimar juriya da aka auna ta fi ƙimar juriya na ƙima, Idan juriya ta lalace tabbas (ya kamata a lura da jira har sai ƙimar juriya ta nuna kwanciyar hankali kafin yanke hukunci, saboda ana iya samun tsarin caji da fitarwa a layi daya tare da capacitor). abubuwan da ke cikin kewaye), idan ƙimar juriya da aka auna ta yi ƙasa da ƙimar juriya na ƙima, gabaɗaya ana yin watsi da shi.Ta haka ne ake auna duk wani resistor da ke jikin allo sau daya, kuma ko da gangan ka kashe dubu, ba za ka rasa ko daya ba.
三、 Hanya don Yin Hukunci Ingantattun Amplifiers Aiki
Amplifiers suna da sifofin "gajeren gani" da "karshe mai kama-da-wane", waɗanda ke da amfani sosai don nazarin da'irar ƙararrawa mai aiki ta madaidaiciya.Don tabbatar da aikace-aikacen linzamin kwamfuta, amplifier mai aiki dole ne yayi aiki a cikin rufaffiyar madauki (mara kyau ra'ayi).Idan babu ra'ayi mara kyau, amplifier na aiki a ƙarƙashin buɗaɗɗen madauki ya zama kwatancen.Idan kuna son tantance ingancin na'urar, yakamata ku fara bambance ko ana amfani da na'urar azaman amplifier ko comparator a cikin kewaye.Bisa ga ka'idar amplifier kama-da-wane, wato, idan amplifier mai aiki yana aiki yadda ya kamata, ƙarfin lantarki a cikin shigarwa iri ɗaya da tashoshi na baya dole ne su kasance daidai, koda kuwa akwai bambanci, har yanzu yana kan matakin mv. .Tabbas, a wasu manyan hanyoyin shigar da impedance, juriya na ciki na multimeter na iya samun ɗan tasiri akan gwajin ƙarfin lantarki, amma gabaɗaya baya wuce 0.2V.Idan akwai bambanci na 0.5V ko fiye, babu shakka amplifier zai gaza!Idan an yi amfani da na'urar azaman kwatancen, ana ba ta damar samun tashoshi masu shigar da basu daidaita ba a hanya ɗaya kuma a juya kwatance.Idan irin ƙarfin lantarki ɗaya ya fi ƙarfin juzu'i, ƙarfin fitarwa yana kusa da matsakaicin ƙimar inganci;Idan irin ƙarfin lantarki
四, Tukwici don gwada abubuwan SMT tare da multimeter
Wasu abubuwan SMD suna da ƙanƙanta, yana sa ya zama da wahala a yi amfani da bincike na multimeter na yau da kullun don gwaji da kiyayewa.Da fari dai, suna iya haifar da gajeriyar kewayawa cikin sauƙi, na biyu kuma, ba shi da kyau a ga allunan da aka lulluɓe da suturta su shiga cikin sassan ƙarfe na fil ɗin.Anan akwai hanya mai sauƙi wanda zai kawo sauƙi mai yawa don gwaji.Ɗauki biyu daga cikin ƙananan alluran ɗinki, (Deep Industrial Control Maintenance Technology Column) kuma sanya su tam a kan alƙalamin multimeter.Sa'an nan kuma, ɗauki siririyar waya ta jan ƙarfe daga igiyoyi masu yawa, ɗaure alƙalami da allurar ɗinki tare da lallausan wayar tagulla, sannan a sayar da su da ƙarfi.Ta wannan hanyar, lokacin da ake auna abubuwan SMT tare da stylus tare da ƙaramin titin allura, babu sauran haɗarin gajerun da'irori, kuma tip ɗin allura na iya huda murfin rufewa kuma ya buga mahimman sassa kai tsaye, yana kawar da buƙatar damuwa da goge fim ɗin.
五, Hanyar Kulawa don Gajerun Laifin Wutar Wuta ta gama gari
A cikin kulawar allon kewayawa, idan akwai gajeriyar kewayawa zuwa gama garitushen wutan lantarki, galibi shine laifin da ya fi yawa, saboda yawancin na'urori suna raba wutar lantarki iri ɗaya, kuma kowace na'ura da ke amfani da wannan wutar lantarki ana zargin ta da ɗan gajeren zango.Idan babu abubuwa da yawa a kan allo, yin amfani da hanyar "hoe the earth" na iya samun gajeriyar wurin kewayawa.Idan akwai abubuwa da yawa da yawa, ko "ƙasa" za ta iya farkawa yanayin ya dogara da sa'a.Anan akwai shawarar hanyar da ke aiki da kyau.Ta amfani da wannan hanyar, zaku iya samun sakamakon sau biyu tare da rabin ƙoƙarin kuma sau da yawa da sauri sami ma'anar kuskure.Ya kamata a sami wutar lantarki mai daidaitacce irin ƙarfin lantarki da na yanzu, mai ƙarfin lantarki na 0-30V da na yanzu na 0-3A.Wannan wutar lantarki ba ta da tsada kuma tana kashe kusan yuan 300.Daidaita buɗaɗɗen wutar lantarki zuwa matakin na'urartushen wutan lantarkiƙarfin lantarki.Na farko, daidaita halin yanzu zuwa mafi ƙanƙanta.Aiwatar da wannan ƙarfin lantarki zuwa wuraren samar da wutar lantarki na kewaye, kamar tashoshi 5V da 0V na guntu 74.Dangane da matakin gajeriyar kewayawa, a hankali ƙara yawan halin yanzu.Taɓa na'urar da hannunka.Lokacin da wata na'ura ta yi zafi sosai, sau da yawa abin lalacewa ne.Kuna iya cire shi don ƙarin aunawa da tabbatarwa.Tabbas, wutar lantarki yayin aiki dole ne ya wuce ƙarfin aiki na na'urar, kuma kada a juya shi, in ba haka ba zai ƙone wasu na'urori masu kyau.
六, Karamin roba don magance manyan matsaloli
Adadin allunan da ake amfani da su wajen sarrafa masana'antu yana ƙaruwa, kuma alluna da yawa suna amfani da hanyar shigar da yatsun zinari cikin ramummuka.Saboda matsanancin yanayin masana'antu, wanda yake da ƙura, ɗanɗano, da lalata, yana da sauƙi ga allunan samun kuskuren tuntuɓar juna.Abokai da yawa sun iya magance matsalar ta hanyar maye gurbin allo, amma farashin sayan allon yana da yawa sosai, musamman ga wasu allunan kayan aikin da aka shigo da su.A haƙiƙa, kowa na iya amfani da gogewa don goge dattin da ke kan yatsan zinare akai-akai, a tsaftace shi, sannan a sake gwada na'urar.Wataƙila za a magance matsalar!Hanyar yana da sauƙi kuma mai amfani.
七, Binciken kurakuran lantarki tare da lokaci mai kyau da mara kyau
Dangane da yuwuwar, kurakuran lantarki daban-daban tare da lokuta masu kyau da mara kyau na iya haɗawa da yanayi masu zuwa:
1. Rashin mu'amala tsakanin allo da ramin, gazawar haɗawa lokacin da kebul ɗin ya karye a ciki, ƙarancin hulɗa tsakanin filogin waya da tashoshi, da rashin lalacewa na abubuwan duk suna cikin wannan rukunin;
2. Don da'irori na dijital, rashin aiki na faruwa ne kawai a ƙarƙashin takamaiman yanayi saboda tsangwama na sigina.Mai yiyuwa ne cewa tsangwama da yawa ya shafi tsarin sarrafawa kuma ya sa ya yi kuskure, kuma akwai canje-canje a cikin sigogin sassa na mutum ɗaya ko jimlar aikin da'irar, wanda ke haifar da wani muhimmin mahimmanci a cikin ikon hana tsangwama da kuma haifar da shi. rashin aiki;
3. Rashin kwanciyar hankali na thermal na abubuwan haɗin gwiwa Daga babban adadin ayyukan kiyayewa, kwanciyar hankali na thermal na farkon capacitor electrolytic ba shi da kyau, sannan sauran capacitors, triodes, diodes, ICs, resistors, da sauransu;
4. Akwai danshi, tara ƙura, da dai sauransu akan allon kewayawa.Danshi da ƙura za su gudanar da wutar lantarki tare da tasirin juriya, kuma ƙimar juriya za ta canza a lokacin haɓakar thermal.Wannan ƙimar juriya yana da tasiri mai kama da sauran sassa.Idan wannan tasirin ya yi ƙarfi, za a canza sigogin kewayawa, haifar da kuskure;
5. Software shima yana daya daga cikin abubuwan da yakamata ayi la'akari dasu.Yawancin sigogi a cikin da'irar ana daidaita su ta amfani da software, kuma gefen wasu sigogi an saita shi ƙasa sosai, wanda ke cikin kewayon mahimmanci.Lokacin da yanayin aiki na inji ya cika dalilin software don tantance laifin, ƙararrawa zai bayyana.
Lokacin aikawa: Juni-21-2023
