Yog tias koj nyob hauv kev ua lag luam rau lub teeb pom kev tshiab, koj yuav xav paub ntau npaum li cas wattage koj xav tau kom ua tiav qhov xav tau ci. Tshwj xeeb, koj yuav xav paub ntau npaum li cas watts koj xav tau los tsim 300 lumens ntawm lub teeb. Cia peb ua tib zoo saib cov lus nug no thiab nws txhais li cas rau koj qhov kev xav tau teeb pom kev zoo.
Ua ntej, cia peb txhais cov lumen yog dab tsi. Lumens yog ib qho kev ntsuas ntawm tag nrho cov teeb pom kev zoo uas lub teeb tsim. Qhov ntau lumens ib lub teeb tsim, qhov ci dua nws yuav tshwm sim. Wattage, ntawm qhov tod tes, yog ib qho kev ntsuas ntawm lub zog uas lub teeb siv. Feem ntau hais lus, qhov siab dua lub wattage, lub zog ntau lub teeb siv.
Yog li, nws siv pes tsawg watts los tsim 300 lumens ntawm lub teeb? Cov lus teb yog nyob ntawm hom teeb uas koj siv. Incandescent qhov muag teev, uas tau raug txiav tawm hauv ntau lub tebchaws vim lawv tsis muaj peev xwm, feem ntau tsim tawm txog 15 lumens ib watt. Qhov no txhais tau hais tias kom tsim tau 300 lumens ntawm lub teeb, koj xav tau ib lub teeb incandescent nrog ib lub wattage ntawm txog 20 (300 lumens / 15 lumens ib watt).
Txawm li cas los xij, yog tias koj siv lub teeb pom kev zoo dua, xws li LED lossis CFL qhov muag teev, wattage xav tau los tsim 300 lumens yuav qis dua. Piv txwv li, LED qhov muag teev muaj peev xwm tsim tau txog li 100 lumens ib watt, uas txhais tau hais tias ib tug 300 lumen LED qhov muag teev tsuas yog yuav tsum tau siv li ntawm 3 watts ntawm lub hwj chim (300 lumens / 100 lumens ib watt). CFL qhov muag teev, uas tseem muaj txiaj ntsig zoo, feem ntau tsim tawm txog 60-80 lumens ib watt, uas txhais tau hais tias 300 lumen CFL noob yuav xav tau siv li ntawm 4-5 watts ntawm lub zog.
Hauv luv luv, tus naj npawb ntawm watts xav tau los tsim 300 lumens ntawm lub teeb nyob ntawm seb hom teeb uas koj siv. Yog tias koj siv lub teeb ci, koj yuav xav tau txog 20 watts los tsim 300 lumens. Txawm li cas los xij, yog tias koj siv lub teeb ci LED lossis CFL, koj tsuas yog xav tau ib feem ntawm qhov nyiaj ntawd - ib ncig ntawm 3-5 watts. Thaum mus yuav khoom rau qhov muag teev, nco ntsoov xyuas cov lumens thiab watts kom ntseeg tau tias koj tau txais qhov zoo ntawm qhov ci rau koj cov kev xav tau thaum tseem muaj zog.
