74FCT3807DQGI8 ic cihp yakabatanidzwa dunhu remagetsi inopisa kutengesa nyowani uye yepakutanga nzvimbo imwe chete kutenga bom sevhisi.

1.LED imhando nyowani inoshanda zvakanyanya uye inoshamwaridzana semiconductor mwenje sosi mudziyo.Kuenzaniswa nemamwe magetsi, LED ine mabhenefiti makuru mukuvhenekesa mota uye ine tarisiro yakakura yekushandisa.Nzira dzakasiyana dzekubatanidza maLED munhevedzano uye dzakafanana kuti dzigadzire ma LED arrays anoshandiswa kusangana nezvinodiwa zvemoto mwenje wemagetsi.

Nekuvandudzwa kwetekinoroji uye nekukurumidza kukura kwehupfumi hwevanhu, zvigadzirwa zve LED zvakashandiswa zvakanyanya muhupenyu hwevanhu.21 zana, kugadzirwa kweLED uye chiyero chemusika chasvika padanho risati ramboitika, musika wakanyanya kukosha wekushandisa weLED inzvimbo dzakasiyana dzekuratidzira, mhando dzakasiyana dzenharembozha, zvichingodaro.Mukuwedzera, ma LED anoita basa rakakosha mumigwagwa, magetsi ekuvaka, kushongedza kwemukati, uye dzimwe nzvimbo dzakawanda.Nekukurumidza kusimukira kweindasitiri yemotokari, maseketi ekutyaira e LED ave achishandiswa zvakanyanya mumagetsi emazuva ano emotokari, uye magetsi ekare emotokari senge mwenje ari kutsiviwa nawo zvishoma nezvishoma.Panguva imwecheteyo, LED ine yakanyanya kupenya kupenya, nguva pfupi yekupindura (yekukurumidza mhinduro), compact chimiro (diki saizi), hupenyu hwesevhisi hurefu, uye humwe hunhu, ichashandiswa mumagetsi emota uye zvakare ine rusarura rwakasimba rwemavara uye anti. -kupenya maitiro.Nekudaro, nekuda kwekugumira kwezvinhu zvakasiyana-siyana, LED ichine humwe hurema, inoda kuramba ichivandudza tekinoroji ye LED, kuita zvirinani zvinodiwa zvemagetsi emotokari.

2.LED ndeye semiconductor mudziyo chiedza emitting diode, iyo inogadzirwa nemamwe makomboni semiconductors.LED inzvimbo yechiedza ine kumira kwakanaka kwekudedera uye kuvhunduka, inodzivirirwa ne epoxy resin cap, iyo core idiki kwazvo, uye musimboti iPN junction core, saka ine hunhu hwePN junction, kureva kumberi. , reverse cut-off uye overvoltage breakdown, etc. Mune zvimwe zvakakosha Pasi pemamwe mamiriro anokosha, inogonawo kuonekwa sechiedza emitter.

3.LED dhiraivha maseketi akakamurwa kuva marudzi maviri ekutyaira: anogara ari voltage drive uye anogara aripo ano dhiraivha.Nekuda kweiyo inogara iripo yedhiraivha yemhando ye LED, muchimiro chePN junction-yakavakirwa, inogona kuve hukama hweexponential kumiririra LED voltage uye shanduko dzazvino, saka ndiyo inonyanya kushandiswa.Constant-voltage yekutyaira nzira kazhinji iko kushandiswa kweresissive capacitance nhanho-pasi kana transformer nhanho-pasi kusefa, kushandiswa kwevoltage regulator diode kana kushandura nzira yemagetsi, kune magetsi eLED, asi mwenje we LED uchange uri mune yazvino. inogara ichichinja pasi pesimba rinoenderana.Iyo linear regulator mune inogara iripo dhiraivha nzira ine marudzi maviri: parallel uye akateedzana, musimboti isimba retatu kana MOSFET inoshanda mumutsara zone seyakasimba inogadziriswa resistor kudzora mutoro.iyo voltage uye yazvino pamigumo yese ye LED haisi hukama hwemutsara, haigone kufambiswa zvakananga nemagetsi sosi, uye inoda kudzikiswa nekudzikamisa ikozvino kudzivirira yakawandisa ikozvino uye kudzivirira kukuvadzwa kwe LED.iyo LED inopenya inoyerera uye yazvino haisi Iyo inopenya inoyerera haina kuenzana neyazvino, iyo inopenya inoyerera inowedzera neyazvino, inotakura madhigirii akasiyana emagetsi emagetsi, kupikisa kwemukati, uye zvipingamupinyi zvingangofanana, saka hazvigone kushandiswa. zvakananga mukuenderana.Sarudza iyo chaiyo uye inonzwisisika dhiraivha modhi inofanirwa kufunga nezve mashandisirwo uye mashandiro ayo, kune chero mhando yemodhi, inodiwa kusarudza mukuchinja magetsi emagetsi ekudzora modhi, iyo application yakajairika ndeye PFM, PWM modhi, uye inotsvedza firimu kutonga, iyo iri nyore uye inochinjika PWM control mode chimiro, inogona kuchengetedza yakagadzikana frequency mukushanda, asi zvakare inofanirwa kufunga kubva kune inochengetedza simba-nzvimbo yekuona uye mamwe mafambiro, kuvandudza LED pakarepo kupenya, uye kuderedza LED simba rekushandisa.