Yuav ua li cas koj xa ib 12 volt LED?
Yuav ua li cas koj xa ib 12 volt LED?

Video: Yuav ua li cas koj xa ib 12 volt LED?

Video: Yuav ua li cas koj xa ib 12 volt LED?
Video: Yuav ua li cas thiaj khiav dim lub ntiajteb no 2024, Kaum ib hlis
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Txuas qhov zoo davhlau ya nyob twg 12 volt fais fab mov rau ib sab ntawm tus tiv thaiv. Txuas lwm sab ntawm lub resistor mus rau lub anode ntawm lub LED . Txheeb xyuas LED cov ntaub ntawv los txheeb xyuas anode thiab cathode. Lub cathode feem ntau yog cov hlau lead luv thiab nyob ze tshaj plaws ntawm ib sab ntawm lub tiaj tus LED.

Raws li, muaj pes tsawg LEDs tuaj yeem khiav ntawm 12v?

Yog li yog tias koj lub hauv paus yog 12v, thiab koj cov LEDs muaj qhov poob qis ntawm 3.5, 12/3.5v, muab rau koj 3 LEDs . Yog tias qhov kev poob qis rau pem hauv ntej ntawm LEDs yog qhov tseeb 3 volts, koj tuaj yeem tuaj yeem tsav 4 ntawm lawv, thiab yuav tsis xav tau qhov txwv tam sim no.

Tsis tas li ntawd, kuv puas xav tau relay rau LED teeb? A relay yog qhov hloov hluav taws xob uas tso cai rau cov hluav taws xob tsawg hauv lub Circuit Court tswj lub siab tam sim no xws li qhov loj LED lub teeb bar. Yog tias koj siv lub teeb ci uas tsis muaj qhov kos loj heev, koj yuav tsis ua xav tau ib tug relay hloov, tab sis yog tias koj siv qhov loj dua LED lub teeb bar, lawv yuav tsum muaj.

Ib qho ntxiv, yuav tsum LEDs txuas rau hauv kab lossis sib luag?

Hauv ntej, thaiv nyob rau hauv series faib cov hwj huam tag nrho ntawm cov LEDs . Kev xaim lawv hauv thaum uas tig mus txhais tau tias txhua tus LED yuav tau txais tag nrho cov voltage uas lub hwj huam mov yog outputting.

Muaj pes tsawg LEDs tuaj yeem muaj lub roj teeb 9v?

Yog hais tias koj txuas lawv nyob rau hauv series nrog ib tug resistor ntawm lub taub hau ntawm txoj hlua lub voltages ntxiv ces siv ib daim duab ntawm 3 volts ib LED nyob rau nruab nrab koj. ua tau coj 3 LED. Lub teeb pom kev ntawm LED nyob rau hauv parallel yuav tsum muaj ib qho resistor rau txhua LED tab sis cov amps ntxiv. Yog li koj ua tau teeb ntau dua LEDS. Raug 9V roj teeb muab 500-800 mA.

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