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LED bulb
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<blockquote data-quote="pavithra_uk" data-source="post: 16811854" data-attributes="member: 242676"><p>godak un 5mm led ena bulb wala heat sink nathi nisa evage heat loss eka na kiyala hithanne eth aththataa evath heat wenawa. </p><p></p><p>anyway CFL ekak 50-65 lm/w (calculated with circuit)</p><p>LED wala 100-120 lm/w calculate karala thiyenne without circuit loss. e nisa led bulb ekak haduwama led driver loss + optics loss nisa 80lm/w wage ganak enne. china led wala 100lm enne na machan. rated lumen gana enne honda quality led wala (cree, osram, philips, samsung wage)</p><p></p><p>mama 7w (1x7 1w leds + 7w driver) dala hadapu bulb ekaka power eka watt meter ekakin check kala. 6.9w e kiyanne driver eka 90% efficient unoth 6.2w thamai led walata yanne. man hithanne 6w wage ganak thamai led walata ganne.</p></blockquote><p></p>
[QUOTE="pavithra_uk, post: 16811854, member: 242676"] godak un 5mm led ena bulb wala heat sink nathi nisa evage heat loss eka na kiyala hithanne eth aththataa evath heat wenawa. anyway CFL ekak 50-65 lm/w (calculated with circuit) LED wala 100-120 lm/w calculate karala thiyenne without circuit loss. e nisa led bulb ekak haduwama led driver loss + optics loss nisa 80lm/w wage ganak enne. china led wala 100lm enne na machan. rated lumen gana enne honda quality led wala (cree, osram, philips, samsung wage) mama 7w (1x7 1w leds + 7w driver) dala hadapu bulb ekaka power eka watt meter ekakin check kala. 6.9w e kiyanne driver eka 90% efficient unoth 6.2w thamai led walata yanne. man hithanne 6w wage ganak thamai led walata ganne. [/QUOTE]
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