samsung LM561C vs LM301B
Posted: Wed Feb 28, 2018 7:06 pm
hello. back after a 10 year break from indoor growing
. last time was with CFL and 600W HPS. i quit growing because i stopped smoking weed (and didn't wanna continue and sell it because it would hurt other people's lungs, and because it's illegal of course).
now i intend to grow a few different plants from seed in a 60cm x 60cm (2' x 2'), some of which i want to migrate to the balcony as soon as it's warm enough outside.
(in the future i might also start to use my other tent again which is 120cm x 120cm (4' x 4') and use it as a flowering room. but for this purpose i would then design another LED-strip fixture).
but for now i intend to power a few strips using a constant current mean well driver HLG-185H-24A. i understood that it's possible to set the current limit between 3.9A and 7.8A in order to drive some 22V or 23V strips "softly". please correct me if i'm wrong.
UPDATE April 3rd: added PAR curve to the spectral graphs now I am not sure if i should go with the longer (560mm) F-series F562B / SI-B8T261560WW @ 4000K
or with the shorter (275mm) Q-series Q282A / SI-B8T051280US *where i get a discount at digikey for ordering 25pcs*
10x F562B cost about the same as 25x Q282A.
this equals 45000 lm vs 25000 lm.
i like that the Q are shorter, which makes them more flexible for DIY-use. and i certainly like the Q's higher efficiency , but would a softly driven F get more efficient than 175 Lm/w? is the q-series really that more efficient? or is it almost like a softly driven F-series with fewer LED's?
and how to interpret the "temperature test" difference between the two? the F-series gets to 65° at 1120mA while q-series gets to 40° @ 450mA?
COMPARISON:
![Smile :)](./images/smilies/icon_e_smile.gif)
now i intend to grow a few different plants from seed in a 60cm x 60cm (2' x 2'), some of which i want to migrate to the balcony as soon as it's warm enough outside.
(in the future i might also start to use my other tent again which is 120cm x 120cm (4' x 4') and use it as a flowering room. but for this purpose i would then design another LED-strip fixture).
but for now i intend to power a few strips using a constant current mean well driver HLG-185H-24A. i understood that it's possible to set the current limit between 3.9A and 7.8A in order to drive some 22V or 23V strips "softly". please correct me if i'm wrong.
UPDATE April 3rd: added PAR curve to the spectral graphs now I am not sure if i should go with the longer (560mm) F-series F562B / SI-B8T261560WW @ 4000K
or with the shorter (275mm) Q-series Q282A / SI-B8T051280US *where i get a discount at digikey for ordering 25pcs*
10x F562B cost about the same as 25x Q282A.
this equals 45000 lm vs 25000 lm.
i like that the Q are shorter, which makes them more flexible for DIY-use. and i certainly like the Q's higher efficiency , but would a softly driven F get more efficient than 175 Lm/w? is the q-series really that more efficient? or is it almost like a softly driven F-series with fewer LED's?
and how to interpret the "temperature test" difference between the two? the F-series gets to 65° at 1120mA while q-series gets to 40° @ 450mA?
COMPARISON: