Electrolytic Capacitors ndicho Chikonzero Chikuru cheHupenyu Hupfupi hweMarambi e LED
Inowanzonzwika kuti hupenyu hupfupi hwemarambi e LED hunonyanya kukonzerwa nehupenyu hupfupi hwemagetsi, uye hupenyu hupfupi hwemagetsi hunokonzerwa nehupenyu hupfupi hwe electrolytic capacitor. Zvikumbiro izvi zvakare zvine musoro. Nekuti musika wakazara nenhamba huru yenguva pfupi uye yakaderera electrolytic capacitors, pamwe nekuti ivo zvino vari kurwisa mutengo, vamwe vanogadzira vanoshandisa aya akaderera-akararama mapfupi electrolytic capacitors zvisinei nemhando.
Kutanga, hupenyu hwe electrolytic capacitor hunoenderana nekupisa kwemukati.
Hupenyu hwe electrolytic capacitor hunotsanangurwa sei? Zvechokwadi, inotsanangurwa mumaawa. Zvisinei, kana indekisi yehupenyu ye electrolytic capacitor iri maawa 1 000, hazvirevi kuti electrolytic capacitor yakaputsika mushure memaawa ane chiuru, kwete, asi chete kuti kukwanisa kwe electrolytic capacitor kunoderedzwa nehafu mushure memaawa 1 000, iyo yaiva. pakutanga 20uF. Iko zvino yava 10uF chete.
Uye zvakare, iyo indekisi yehupenyu ye electrolytic capacitors zvakare ine hunhu hunofanirwa kutaurwa mune mangani madhigirii ehupenyu hwekushanda nharaunda tembiricha. Uye inowanzotsanangurwa sehupenyu huri pa105 ° C ambient tembiricha.
Izvi zvinodaro nekuti ma electrolytic capacitor atinowanzo kushandisa nhasi ma electrolytic capacitors anoshandisa mvura electrolyte. Ehe, kana iyo electrolyte yakaoma, iyo capacitance ichave yaenda. Kana tembiricha yakakwira, zvinoita nyore kuti electrolyte inofema. Naizvozvo, iyo indekisi yehupenyu ye electrolytic capacitor inofanira kuratidza hupenyu pasi peiyo ambient tembiricha.
Saka zvose electrolytic capacitors ikozvino yakanyorwa pa 105 ° C. Somuenzaniso, iyo yakawanda electrolytic capacitor ine hupenyu hwemaawa 1 000 chete pa 105 ° C. Asi kana iwe uchifunga kuti hupenyu hwese electrolytic capacitors inongova maawa 1 000 chete. Izvozvo zvinenge zvisina kunaka.
Zvichitaurwa zviri nyore, kana ambient tembiricha yakakwira kupfuura 105 ° C, hupenyu hwayo huchave huri pasi pe1,000 maawa, uye kana ambient tembiricha yakaderera pane 105 ° C, hupenyu hwayo huchave hwakareba kupfuura maawa 1,000. Saka pane rough quantitative hukama pakati pehupenyu netembiricha? Ehe!
Imwe yehukama hwakareruka uye huri nyore kuverenga ndeyekuti kune yega yega 10 madhigirii ekuwedzera tembiricha ye ambient, nguva yehupenyu inoderedzwa nehafu; Ukuwo, kune yega yega 10 dhigirii inodzikira mu ambient tembiricha, nguva yehupenyu inopetwa kaviri. Hongu, iyi ingori fungidziro yakapusa, asi zvakare ndeyechokwadi.
Nekuti iyo electrolytic capacitors inoshandiswa ku LED kutyaira simba inoiswa mukati meiyo LED mwenje imba, isu tinongoda kuziva tembiricha mukati memwenje we LED kuti tizive hupenyu hwekushanda hwe electrolytic capacitor.
Nekuti mumarambi mazhinji maLED uye electrolytic capacitors akaiswa mubhokisi rimwe chete, tembiricha yezvakatipoteredza yezviviri zvakangofanana. Uye iyi ambient tembiricha inonyanya kutsanangurwa nekudziya uye kutonhora chiyero che LED uye magetsi ekupa. Uye iyo yekudziya uye kutonhora mamiriro ega ega mwenje we LED akasiyana.
Nzira yekuwedzera electrolytic capacitor hupenyu
① Rebesa hupenyu hwayo nekugadzira
Kutaura zvazviri, nzira yekuwedzera hupenyu hwe electrolytic capacitors iri nyore kwazvo, nokuti kuguma kwayo kwehupenyu kunonyanya kukonzerwa nekuputika kwemvura electrolyte. Kana chisimbiso chayo chikavandudzwa uye chisingabvumirwi kubuda mhepo, hupenyu hwayo hunozowedzerwa.
Mukuwedzera, kuburikidza nekutora phenolic plastiki chivharo ne electrode yakaipoteredza yose, uye kaviri yakakosha gasket yakanyatsobatanidzwa neganda realuminium, kurasikirwa kwe electrolyte kunogonawo kuderedzwa zvikuru.
② Rebesa hupenyu hwayo kubva pakushandisa
Kuderedza ripple ikozvino kunogonawo kuwedzera hupenyu hwayo hwesevhisi. Kana ripple ikozvino yakakura zvikuru, inogona kuderedzwa nekushandisa maviri capacitor mune zvakafanana.
Kudzivirira electrolytic capacitors
Dzimwe nguva kunyange kana hupenyu hurefu hwe electrolytic capacitor inoshandiswa, inowanzoonekwa kuti electrolytic capacitor yakaputsika. Chii chiri chikonzero cheizvi? Zvechokwadi, hazvina kunaka kufunga kuti kunaka kwe electrolytic capacitor hakuna kukwana.
Nekuti isu tinoziva kuti pane AC magetsi gidhi reguta simba, panowanzove nekukasira kwakakwira voltage kukwira nekuda kwekurova kwemheni. Kunyange zvazvo matanho akawanda ekudzivirira mheni akashandiswa nokuda kwekurova kwemheni pamagetsi makuru emagetsi, zvichiri kusingadzivisiki kuti pachava nekudonha kwemambure kune vagari Pamba.
Kune ma LED luminaires, kana achifambiswa ne mains, iwe unofanirwa kuwedzera matanho ekudzivirira-kukwira kune mains ekuisa zviteshi mumagetsi emagetsi eruminaire, kusanganisira fuse uye overvoltage kudzivirira resistors, anowanzo kunzi varistors. Chengetedza zvinotevera zvikamu, zvikasadaro iyo refu-yehupenyu electrolytic capacitors ichave yakabaiwa neiyo surge voltage.