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Fim Capacitor Parameter Description - nau'ikan nau'ikan dielectric daban-daban guda uku Share

Ƙarfe ya bambanta da tsarin tsarin tsarin fim din. Koyar da ku yadda za a zabi a nan. Domin karafa na bakin ciki na fim capacitors, aluminum ana fesa a cikin dielectric fim ta fim vacuum ajiya. Ƙarfafawa ya fi ƙarami fiye da capacitor wanda aka yi da takarda daban da membrane Layer, nauyin ya fi sauƙi, kuma farashin naúrar Fala yana da ƙasa, kuma yana warkarwa. Amma kuma yana haifar da ƙarancin ƙarfin halin yanzu. Ƙananan girma da ƙananan farashi suna da ban sha'awa musamman a cikin babban ƙarfin iko

 

Warkar da kai yana nufin gajeriyar da'ira ta ciki ko lahani a cikin membrane daga wuce gona da iri da za a cire a cikin 'yan microfarad. Wannan ƙaramin kuskure ne a cikin wutar lantarki na waje, amma capacitor ba shi da lahani na dindindin don guje wa raguwar ƙarfin da ba ya da kyau. Wannan fa'idar ta sa HVC mai ƙarfin fim ɗin ƙarfe ya zama babban zaɓi na daidaitaccen zaɓi a cikin aikace-aikacen, amma ban da shari'o'i huɗu masu zuwa:

1) Ƙananan ƙarfin ƙasa da 0.01 μF, wanda girman girman girman ba shi da mahimmanci, kuma kayan fim ɗin foil ya fi karami.
2) Kamar babban ci gaba mai gudana a cikin da'irar maras tabbas,
3) Kamar babban halin yanzu a cikin madauki mai ban tsoro,
4) ƙaramar amo, akwai matsala a cikin wannan tsaftacewar kai, kodayake kaɗan yana tare da ƙarfin amo.

 

Polyester dielectric: kamar yadda metallization yawanci zaɓi na HVC Tsarin, da kuma polyester ne yawanci zaɓi na dielectric film kayan. A cikin HVC dielectrics guda uku, polyester yana da mafi girman dielectric akai-akai, yana ba da mafi ƙarancin farashi mafi ƙarancin capacitor, da fa'idar aiki a zafin jiki na har zuwa 125 ° C a rabin ƙimar ƙarfin lantarki. Duk da haka, yayin da lalata wutar lantarki ya hana zaɓinsa a matsayin babban ƙarfin wutar lantarki na AC na yanzu ko mai girma, ƙaddamar da wutar lantarki yana hana aikace-aikacensa a cikin babban halin yanzu ko babban ƙarfin AC; daga -55 ° C zuwa 0 ° a matsayin capacitance C kuma daga 50 ° C zuwa 125 ° C, polyester ba daidaitaccen capacitance ba ne a matsanancin yanayin zafi. Duk da haka, an lura cewa capacitance daga 0 ° C zuwa 50 ° C kawai canza don ± 1%.

 

Polypropylene dielectric dogara ne a kan ƙananan asarar kusurwar da HVC capacitor zai iya zama m ga DC high halin yanzu, AC high ƙarfin lantarki da kuma sadarwa high mita aikace-aikace. A lokaci guda, manyan masu hana insulating resistors da ƙarancin ƙarancin dielectric sun haɗu da madaidaicin capacitor na DC. A cikin aikace-aikace da yawa, zai maye gurbin polyester, sai dai ƙananan ƙarancin dielectric; saboda bakin ciki high rabo tsare fim ba a samu, girman ne babba kuma mafi girma. Yana da mummunan abu cewa matsakaicin zafin jiki na aiki shine 105 ° C. Polypropylene ya dace da aikace-aikace inda yawancin polyesters suka rasa. Yana iya ko da gyara da polyester za a iya amfani da a kan fadi da zazzabi: ta capacitor ne game da wannan kudi kamar yadda zafin jiki drop da aka ƙara. Saboda haka, da polypropylene capacitor a layi daya polyester capacitance samar da zazzabi diyya capacitor.

 

Ana amfani da sulfide na polyphenylene a daidai ƙarfin ƙarfin ƙarfi da zafin jiki mai faɗi. Yana iya aiki daga -55 ° C zuwa 125 ° C, mafi yawa damar da kasa da 1%, sai ga kewayon matsananci darajar. Polyphenylene sulfide shine mafi kyawun madaidaicin dielectric capacitor da fim ɗin dielectric capacitor na FCP.

 

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