Ntsuas qhov tam sim no ntawm ib qho LED module

Txhawm rau xam cov khoom siv hluav taws xob hloov pauv uas yuav tsum tau ua rau LED zaub, koj yuav tsum ntsuas qhov tam sim no ntawm ib qho LED module, tom qab ntawd siv cov khoom siv hluav taws xob los xam cov naj npawb ntawm cov khoom siv hluav taws xob ib leeg tuaj yeem txhawb nqa, thiab thaum kawg txiav txim siab tus naj npawb ntawm cov khoom siv hluav taws xob raws li tag nrho cov khoom siv hluav taws xob. Cov kauj ruam tshwj xeeb yog raws li nram no:

Ntsuas qhov tam sim no ntawm ib qho LED module
Kev npaj cov khoom siv: Npaj lub LED zaub module yuav tsum tau kuaj (xws li P10-4S sab nraum zoov LED zaub module), ib tug multimeter muaj peev xwm ntsuas DC tam sim no nyob rau hauv 10A, ob peb nyob ntawm tej, hluav taws xob daim kab xev, hlau strippers, LED zaub tswj daim card, thiab ib tug LED zaub fais fab mov.

Kev xaim kom raug: Txuas lub multimeter hauv series rau hauv LED module txoj haujlwm ua haujlwm. Cov kab ke tshwj xeeb yog:
- Txuas AC 220V rau lub tswv yim ntawm LED fais fab mov.
- Txuas ib lub xov hlau los ntawm qhov zoo tso zis davhlau ya nyob twg mus rau lub multimeter's liab sojntsuam (zoo).
- Ntxig lub xov tooj liab rau hauv qhov liab "10A" chaw nres nkoj ntawm multimeter.
- Txuas cov kev sojntsuam dub mus rau cov xaim liab (zoo) ntawm cov kab hluav taws xob module.
- Txuas cov kab hluav taws xob module ib txwm rau lub module.
- Txuas cov xaim dub (tsis zoo) ntawm cov kab hluav taws xob module rov qab mus rau qhov tsis zoo tso tawm lub davhlau ya nyob twg ntawm LED fais fab mov.

Ntsuas cov ntawv nyeem: ntsaws rau hauv lub qhov hluav taws xob input thiab tig rau LED zaub. Tam sim no ntawm ib qho module yuav hloov pauv nrog cov ntsiab lus pom. Nias lub pob xeem ntawm daim npav tswj kom hloov lub xeev lub vijtsam, thiab sau cov ntaub ntawv tam sim no rau ntau lub xeev, piv txwv li:
- Qhov tam sim no siab tshaj plaws thaum pom cov xim dawb, kwv yees li 5.8A.
- Tam sim no yog 3.3A rau lub xeev liab thiab ntsuab.
- Tam sim no yog 2.0A rau lub xeev xiav.
- Thaum rov qab mus rau qhov kev ua si ib txwm muaj, qhov tam sim no hloov pauv ntawm 1–2A.

Xam cov naj npawb ntawm cov modules ib qho kev hloov hluav taws xob tuaj yeem txhawb nqa
Txiav txim siab qhov zoo ntawm lub hwj huam mov: Siv ib qho 200W hloov fais fab mov ua piv txwv. Cov chaw tsim khoom muab cov khoom thauj khoom raws li "Tswj 5V 40A" nrog rau kev hloov pauv zoo ntawm 88%. Xam lub zog siv tau los ntawm LED hloov hluav taws xob siv cov qauv:
$P = 88% × 200W = 176W$

Xam qhov siab tshaj plaws kev siv hluav taws xob ntawm ib qho module: Raws li tus qauv $P=UI$, nrog rau qhov paub module kev khiav hauj lwm voltage $U=5V$ thiab siab tshaj tam sim no $I=5.8A$ thaum tso saib tag nrho dawb, qhov siab tshaj plaws kev siv hluav taws xob ntawm ib qho LED module yog:
$P_1=UI=5V × 5.8A=29W$

Xam cov naj npawb ntawm cov modules txhawb: Faib lub zog zoo ntawm cov khoom siv hluav taws xob los ntawm kev siv lub zog siab tshaj plaws ntawm ib qho modules kom tau txais cov naj npawb ntawm cov modules ib zaug LED hloov hluav taws xob tuaj yeem txhawb nqa:
$n = P/P_1 = 176W / 29W ≈ 6.069$

Txij li thaum tus naj npawb ntawm cov modules yuav tsum yog ib tug integer, lub LED fais fab mov yuav tsis overloaded yog hais tias nws txhawb tsis ntau tshaj 6 modules. Tus lej txhawb siab tshaj plaws suav raws li qhov siab tshaj plaws tam sim no suav tias yog qhov kev nyab xeeb. Thaum lub sijhawm ua haujlwm ib txwm muaj, qhov ua haujlwm tam sim no feem ntau tsuas yog 1/3-1/2 ntawm qhov siab tshaj plaws tam sim no, tab sis kom muaj kev nyab xeeb thiab ruaj khov ntawm cov khoom siv hluav taws xob, qhov siab tshaj plaws tam sim no yog siv rau kev suav.