Tom qab txuas ob peb lub teeb LED hauv series rau lub tsheb fais fab tuaj yeem siv ncaj qha?

Txuas ob peb lub teeb LED hauv series rau lub tsheb hluav taws xob tsis tuaj yeem siv ncaj qha, uas yuav hlawv lub LED tam sim ntawd.

LED tuaj yeem ua haujlwm tau zoo los ntawm qhov tam sim no, ntau dhau los yog tsawg dhau los yuav cuam tshuam rau nws lub teeb thiab lub neej. Siv cov teeb pom kev zoo tam sim no 5050LED ua piv txwv, qhov ua haujlwm tam sim no yog 20mA, thiab qhov hluav taws xob poob yog li 3V. Yog tias teeb tsa nrog 30mA, nws tseem tuaj yeem tawm lub teeb, tab sis lub neej yuav luv heev; Yog tias 50mA raug teeb tsa, lub cuab yeej hlawv tam sim ntawd.

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LED series txoj kev yog qhov zoo thiab qhov tsis zoo sib txuas, ob qhov kawg tsuas yog ib qho kawg ntawm qhov zoo thiab qhov tsis zoo terminals txuas nrog rau qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob, qhov kev txwv tam sim no tuaj yeem ua txoj hlua nyob rau hauv txhua txoj hauj lwm ntawm pawg circuits, Yog hais tias tus naj npawb ntawm series thiab parallel ua ke, txhua txhua 3 series rau ib pab pawg, thiab ces muab txhua pab pawg neeg nyob rau hauv parallel, tus naj npawb ntawm parallel pawg raws li rated tam sim no ntawm lub hwj chim mov los txiav txim, qhov siab tshaj plaws tag nrho tam sim no nyob rau hauv parallel tsis tuaj yeem tshaj qhov ntsuas tam sim no ntawm cov khoom siv hluav taws xob.

General LED voltage yog hais txog 3V (tshwj tsis yog lub teeb liab) vim hais tias LED voltage thiab tam sim no cov yam ntxwv yuav tsum raug txwv nyob rau hauv kev siv, tam sim no loj heev ua rau LED tawg thiab lub teeb tsis ua hauj lwm, thiaj li yuav xyuas kom meej tias lub LED yuav ua hauj lwm nyob rau hauv lub qub. tam sim no ntau yam, yog li LED yuav tsum tau txuas nrog cov tswj fais fab mov thaum siv lub series tam sim no-limiting resistor, Lub luag hauj lwm ntawm lub tam sim no limiting kuj yog thaum lub hwj chim mov voltage siab los yog LED raug cuam tshuam los ntawm kub yam.