Ama-capacitor e-ceramic kagesi aphezulu angasetshenziswa njengama-decoupling capacitor. Lawa ma-capacitor aklanyelwe ukusebenza ngama-voltage aphezulu futhi angasetshenziswa ukulawula izinguquko zamanje kagesi kumjikelezo wedrayivu ukuvimbela ukuphazanyiswa okuhlanganyelwe kanye nokunciphisa ukuvinjelwa kokuphazamisa kwe-high-frequency. Kodwa-ke, izinhlobo ezithile namamodeli we-voltage ephezulu ye-ceramic capacitor kufanele kukhethwe ngokusekelwe ezidingweni zesekhethi kanye nezilinganiso zamandla kagesi/zamanje zezingxenye ezisetshenziswa kusekethe. Kunconywa ukuthi uthintane nomkhiqizi u-www.hv-caps.com noma umsabalalisi ukuze uqinisekise ukuthi i-ceramic capacitor enamandla kagesi aphezulu ifanele ukusetshenziswa njenge-decoupling capacitor ohlelweni oluthile.
Nazi ezinye izibonelo zemidwebo yesifunda ebonisa ukusetshenziswa kwama-capacitor e-decoupling:
Kulo mdwebo wesifunda, i-capacitor (C) i-decoupling capacitor exhunywe phakathi kokunikezwa kwamandla nomhlabathi. Isiza ukususa umsindo wefrikhwensi ephezulu esignali yokokufaka ekhiqizwa ngenxa yokushintsha nezinye izici.
2. Isifunda sedijithali sisebenzisa ama-capacitor e-decoupling
Kulo mdwebo wesifunda, ama-capacitor amabili ahlukanisayo (i-C1 ne-C2) asetshenziswa, eyodwa ngaphesheya komshayeli futhi enye ngaphesheya komthwalo. Ama-capacitor asiza ukususa umsindo owenziwe ngenxa yokushintsha, ukunciphisa ukuhlanganisa nokuphazamiseka phakathi komshayeli nomthwalo.
3. Ukunikezwa kwamandla kwesekethe usebenzisa
Kulo mdwebo wesifunda, i-decoupling capacitor (C2) isetshenziselwa ukulawula ukuphuma kwamandla kagesi. Isiza ukuhlunga umsindo okhiqizwa kwisekethe yokuphakelwa kwamandla futhi inciphise ukuhlangana nokuphazamiseka phakathi kwesekethe namadivayisi asebenzisa ukunikezwa kwamandla.
Okulandelayo umbuzo ovame ukubuzwa mayelana "ne-decoupling capacitor"
1) Yini i-decoupling capacitor?
Ama-Decoupling capacitor ayizingxenye ze-elekthronikhi ezisiza ukuhlunga umsindo we-high-frequency kanye nokuguquguquka kwe-voltage. Exhunywe phakathi kukaloliwe wokuphakela amandla kanye nomhlabathi, asebenza njengendlela ephansi yokuvinjelwa kwamafrikhwensi aphezulu ukuya phansi, okunciphisa inani lomsindo ongena kusekethe.
2) Asebenza kanjani ama-decoupling capacitor?
Ama-Decoupling capacitor akha amandla esikhathi esifushane ukuze amasiginali wefrikhwensi ashintshe phakathi kukagesi nomzila ophansi. Ngokuvala amandla emvamisa ephezulu phansi, anganciphisa umsindo wokuphakelwa kwamandla futhi anciphise ukuhlangana kwamasignali ahlukene.
3) Asetshenziswa kuphi ama-decoupling capacitor?
Ama-Decoupling capacitor avame ukusetshenziswa kumishini kagesi njengama-microprocessors, amasekhethi ahlanganisiwe, ama-amplifiers, namandla kagesi. Ziphinde zisetshenziswe ezinhlelweni zemvamisa ephezulu nalapho isilinganiso esiphansi sesignali-kuya-nomsindo sibalulekile.
4) Yini i-capacitor shunting?
I-Capacitor shunting iyisenzo sokuxhuma i-capacitor phakathi kwama-node amabili kusekethe ye-elekthronikhi ukunciphisa umsindo noma ukuhlangana kwesignali phakathi kwawo. Ivamise ukusetshenziswa kuma-decoupling capacitor njengendlela yokuthuthukisa ikhwalithi yokuphakelwa kwamandla kanye nokucindezela i-EMI.
5) I-decoupling capacitor iwunciphisa kanjani umsindo ophansi?
Ama-capacitor e-Decoupling anciphisa umsindo ophansi ngokunikeza indlela ephansi yokuvinjelwa kwamasignali amaza aphezulu ukuya phansi. I-capacitor isebenza njengomthombo wamandla wesikhashana futhi isiza ukukhawulela inani lamandla elingahamba endizeni yaphansi.
Yebo, ama-decoupling capacitor angacindezela i-EMI ngokunciphisa inani lomsindo we-high-frequency ongena kusekethe. Banikeza indlela ene-impedance ephansi yamasiginali wemvamisa ephezulu ukuya phansi, okukhawulela inani lomsindo olahlekile ongabhangqa kwamanye amasiginali.
7) Kungani i-decoupling capacitor ibalulekile kumasekethe kagesi?
Ama-Decoupling capacitor adlala indima ebalulekile ekwakhiweni kwesekethe ye-elekthronikhi ngokunciphisa umsindo nokushintshashintsha kwamandla kagesi okungaba nomthelela ekusebenzeni kwesistimu. Zisiza ukugcina ubuqotho besignali, ukunciphisa i-EMI nomsindo waphansi, ukuvikela ekonakalisweni kokunikezwa kwamandla, nokuthuthukisa ukusebenza kwesekethe jikelele.
8) Ngabe umsindo we-high-frequency kanye nokuxhumana kwesignali kuwathinta kanjani amasekhethi kagesi?
Umsindo we-high-frequency kanye nokuxhumanisa isignali kungaholela ekusebenzeni okuncishisiwe nokuthembeka kumasekethe kagesi. Angabangela ukuphazamiseka kwesignali okungafunwa, anciphise imingcele yomsindo, futhi andise ingozi yokwehluleka kwesistimu.
9）Uwakhetha kanjani ama-capacitor alungile wohlelo lwakho lokusebenza?
Ukukhethwa kwama-decoupling capacitor kuncike ezidingweni ezithile zohlelo lokusebenza njengobubanzi befrikhwensi, isilinganiso se-voltage, nevelu ye-capacitance. Kuphinde kuncike ezingeni lomsindo okhona ohlelweni kanye nemikhawulo yesabelomali.
10) Yiziphi izinzuzo zokusebenzisa ama-decoupling capacitor kudivayisi ye-elekthronikhi?
Izinzuzo zokusebenzisa ama-decoupling capacitor kumadivayisi kagesi zifaka ikhwalithi yesiginali engcono, ukuzinza kwesekethe okuthuthukisiwe, umsindo oncishisiwe wokuphakelwa kwamandla, nokuvikelwa ku-EMI. Zingasiza futhi ukunciphisa umsindo ophansi futhi zithuthukise ukwethembeka okuphelele kwesistimu.
Lezi yizibonelo ezimbalwa zemidwebo yesifunda esebenzisa ama-decoupling capacitor. I-circuit ethize kanye namanani e-decoupling capacitor asetshenzisiwe azohluka kuye ngokuthi isicelo kanye nezidingo zesekethe.
