LED bulb

[kinkon]

phillips ekak 2500+ wenawa ban.

CFL 4ක විතර ලයිෆ් එකක් නේද LED වල තියෙන්නෙ..ඒවම හොඳා

 

[pavithra_uk]

SMD valin hadapu lamp valata 5mm LEDs walata wada current yanawa kiyanna ba. ekama watt gana yana vidiyata SMD, 5mm LED hari 1W LED hari daala hadanna puluwan. Individual LED rated power consumption X number of LEDs eka anuwa thamai. SMD LED walath type eka anuwa Lumens per watt wenas wenawa.

Thawath mehema wadakuth wenawa:
LED lamp/ lamp parts wikunana aya eg:7W kiayala dena lamp eke power consumption eka watt meter ekakin baluwahama attatama 4.5W. Ethakota ganna kena hithanawa LED lamp wala CFL tharam eliya naha kiyala.

CFL wala dena light eka 54 lumens per watt wage LED wala 100-120 lumens per watt. CFL 11W bulb wenuwata LED 7W ati . Habai kiyana watt gaana hariata thiyanawada kiyala balanna one.

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.

 

[pavithra_uk]

CFL 4ක විතර ලයිෆ් එකක් නේද LED වල තියෙන්නෙ..ඒවම හොඳා

50000 hours to 70% of light output at rated operating conditions. LED only.
driver < 50000 hours

man hithanne 25000 to 35000 hours athi original evage. china evage nam 1000-5000 hours thamai.

 

[SHAPE_SHIFTER_007]

බම්ප්

 

[kinkon]

50000 hours to 70% of light output at rated operating conditions. LED only.
driver < 50000 hours

man hithanne 25000 to 35000 hours athi original evage. china evage nam 1000-5000 hours thamai.

CFL pestiye gahala thiyenne 8000 hours keyala..

 

[monson]

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.

Thanks for info. Mata arawage wedak una. Pettah walin parts genawahama un kiyana watt gana nemei ara podi SMD chips paassalama thiyana ewage thiyenne. passe mama e type SMD google karala baluwahama power consumption eka hari arun boru watta ganang kiyala wikunanne.