Samsung Q-series strips

[Randomblame]

Only 134w net. in a 2x 2' tent sounds really good, especially with +850μMol/s ppfd...
Have not thought that they are so fast available..

 

[Serva]

Looks like the Q's are 20% more expensive than the F's, per diode. I didn't compare the double row models. At my scale it's worth the extra money to save a lot of hassle trying to get even coverage in my odd sized space.

How does my math look?

A 1 foot Q strip is a 4s5p array of LM301B's, 2 foot is 8s5p, etc... because 11V / 4 and 22V / 8 = 2.75V
At 500mA, each diode is in a 5p array is getting 100mA of current
According to the datasheet, a LM301B puts out 150% of the flux at 100mA as at 65mA, 150% / (100mA / 65mA) = 0.975 * 2.772 µmol/J = 2.7027 µmol/J @ 100mA and 25C, i.e. 2.5% current droop at 100mA
At 500Ma, the Vf of the LM301B is about 2.79, * 4 = 11.16V per foot of Q series strip
11.16V * 0.5mA = 5.58W * 2.7027 µmol/J = 15.081 µmol/s per foot of Q series strip at 500mA and 25C

I'm planning on running 24 feet of Q strips, eight bars each with a two foot and a one foot strip. My flowering chamber is 0.3952 m^2. 24 * 15.081 µmol/s / 0.3952 m^2 = average 916 µmol/s/m^2 PPFD. That's an based on an unrealistic 25C Tj pulsed measurement, actual output will probably be somewhere north of 870 (5% temp droop at 80C Tj) It'll be over the average in the middle and below it on the edges of course.

You could adjust the design, to have a complete uniform light. Run the sides harder, than the middle, for example. I am planing to have atleast two driver, for different color channels (even in flower 3k+5k) to adjust from 50-100%. I really love these small 1‘ strips (using eb series myself), they are soo handy. And with these diffusor sheet randomblame posted lately, I can imagine some easy water proof construction, and some awesome uniform light!

 

[Observe & Report]

You could adjust the design, to have a complete uniform light. Run the sides harder, than the middle, for example. I am planing to have atleast two driver, for different color channels (even in flower 3k+5k) to adjust from 50-100%. I really love these small 1‘ strips (using eb series myself), they are soo handy. And with these diffusor sheet randomblame posted lately, I can imagine some easy water proof construction, and some awesome uniform light!

I think it's easier to space the strips a bit more in the center than try to adjust the current.

What are these diffusor sheets randomblame posted? I couldn't find them.

 

[Randomblame]

P

I think it's easier to space the strips a bit more in the center than try to adjust the current.

What are these diffusor sheets randomblame posted? I couldn't find them.

Hey, brother O'n R.
They are called LightShapingDiffusers and are is nothing else as a fresnel lens, you can get in different beam-angles.

They are already used in a few lights for instance in Grownotherns Holographic Series.

They are moslty used by Dutch Passions forum users and are 75w LED lights(blurple+white LED mix, 64 brand diodes) with 3 different diffuser(40, 60 und 90°, for different areas and heights).

@Tang opens up a few threads a few years ago. Heres a vid with two of them over a blueberry kush:

And this is the link to the LSD's:

http://www.acalbfi.com/de/Photonik/Light-Shaping-Diffuser/p/LSD-Light-Shaping-Diffuser-Bogen/0000001W0G

 

[CobKits]

lol far out

 

[Dave455]

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8U101560US/1510-2286-ND/7562244

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8U261560WW/1510-2218-ND/6624002

they are actually cheaper than f strips in the 2 feet.

@StonerCol ,what is the best option ,and why?
@tomate ,where did you find QER,LER data for the 301b,pleas?
thanks

The f strip is a double strip and produces twice the lumens ? correct ?

 

[Danielson999]

The f strip is a double strip and produces twice the lumens ? correct ?

F-series strips come in both single and double rows of diodes.

 

[PSUAGRO.]

P


Hey, brother O'n R.
They are called LightShapingDiffusers and are is nothing else as a fresnel lens, you can get in different beam-angles.

They are already used in a few lights for instance in Grownotherns Holographic Series.

They are moslty used by Dutch Passions forum users and are 75w LED lights(blurple+white LED mix, 64 brand diodes) with 3 different diffuser(40, 60 und 90°, for different areas and heights).

@Tang opens up a few threads a few years ago. Heres a vid with two of them over a blueberry kush:

View attachment 4040879

And this is the link to the LSD's:

http://www.acalbfi.com/de/Photonik/Light-Shaping-Diffuser/p/LSD-Light-Shaping-Diffuser-Bogen/0000001W0G

Every other grower that used those panels had mediocre results, tang getting those numbers he did with 9.6w per sq ft in flower threw up a lot of red flags in here, he bounced soon after.........his runs weren't replicable by other skilled auto guys, ever......hmmmmm.

lol far out

View attachment 4040909

nice catch..............turn on, tune in, drop out

 

[VegasWinner]

These are newly available strips based on the LM301B chip and available in 1, 2, and 4 foot lengths. All three lengths have the same number of chips in parallel. This makes it easy mix different lengths by hooking them up in series to a constant current driver and cover odd spaces like three or five feet. Other strips like the H-series have the same forward voltage among the different lengths, so each strip length requires a different current in order to mix them with even output.

http://www.samsung.com/global/business/led/products/led-engine/ambient-light-engine/q-series
http://www.samsung.com/global/business/led/products/led-component/mid-power/lm301b

For drivers I'm looking at using one MeanWell LDD-H 500mA per four feet of LT-Q. Four feet of LT-Q at the max Vf adds up to a bit under 45 volts which is under the 3-Volt drop out of the LLD on a 48V power supply. The LDD-H's are cheap ($5), dimmable, and clean/easy when plugged into a one of the rapidled PCBs. You can use one big driver like the HLG too if you're OK with the high voltage.

The claimed efficiency on these things is great but I don't know how honest Samsung has been in the past with their numbers. Anyone have any insight?

here is a report from one of my suppliers with testing of the LM301B diode. I had considered designing a board to use with the LM301B but the numbers were not there for me.

The numbers show 212lm/w fr LM301B compared to 200lm/w for LM561C at a cost increase of 33% over the LM561C.

I stayed with the LM561C until prices drop considerably.

 

[Randomblame]

Every other grower that used those panels had mediocre results, tang getting those numbers he did with 9.6w per sq ft in flower threw up a lot of red flags in here, he bounced soon after.........his runs weren't replicable by other skilled auto guys, ever......hmmmmm.




nice catch..............turn on, tune in, drop out

Yes I know!
I saw his threads back then as he tried to impress us with his results. It did not take long before he had painted his sails and pulled off, LOL!
Just wanted to make clear what diffuser it is.
I do not think they are helpful with stripes or qboards, because the light is already very diffuse. No need to make diffuse light even diffuser and lose another 6 or 8% PPF, better use some 2" wide reflector sheets along the 4 sides and increase your PPFD by a few %. IMO, of course...!

 

[PSUAGRO.]

Yes I know!
I saw his threads back then as he tried to impress us with his results. It did not take long before he had painted his sails and pulled off, LOL!
Just wanted to make clear what diffuser it is.
I do not think they are helpful with stripes or qboards, because the light is already very diffuse. No need to make diffuse light even diffuser and lose another 6 or 8% PPF, better use some 2" wide reflector sheets along the 4 sides and increase your PPFD by a few %. IMO, of course...!

Ah, forgot you where here for the tang show and tell; ).......... yes diffuse light, just being dramatic, ha ha. I don't think cannabis benefits from it, imagine growing corn under diffusers!? Take all the light they can get, heavy nitrogen feeders, much like our ladies.

 

[The Dawg]

Ah, forgot you where here for the tang show and tell; ).......... yes diffuse light, just being dramatic, ha ha. I don't think cannabis benefits from it, imagine growing corn under diffusers!? Take all the light they can get, heavy nitrogen feeders, much like our ladies.

Damn Brother P Saying Corn Doesn't Grows Well Under Diffuser's Is A False Statement !! What Do You Call Cloud's?? I Rest My Case

 

[Randomblame]

here is a report from one of my suppliers with testing of the LM301B diode. I had considered designing a board to use with the LM301B but the numbers were not there for me.

The numbers show 212lm/w fr LM301B compared to 200lm/w for LM561C at a cost increase of 33% over the LM561C.

I stayed with the LM561C until prices drop considerably.

So, actually even only 8,2lm / w difference at 65mA...

Ah, forgot you where here for the tang show and tell; ).......... yes diffuse light, just being dramatic, ha ha. I don't think cannabis benefits from it, imagine growing corn under diffusers!? Take all the light they can get, heavy nitrogen feeders, much like our ladies.

I agree to the first and last, but I firmly believe that all plants benefit from diffused light, simply because it can penetrate in deeper areas and shade is largely avoided.
But there is no need to make already diffused light even diffuser. IMO, QB's and strips offer already diffuse light because of the multiple diodes/angles and plants would not benefit with an additional diffusor.

Damn Brother P Saying Corn Doesn't Grows Well Under Diffuser's Is A False Statement !! What Do You Call Cloud's?? I Rest My Case

Agreed!
Back in the 80's I have hidden many beautiful ladies in milky foil greenhouses and they've always done better as my outdoor plants.

 

[PSUAGRO.]

Damn Brother P Saying Corn Doesn't Grows Well Under Diffuser's Is A False Statement !! What Do You Call Cloud's?? I Rest My Case

So, actually even only 8,2lm / w difference at 65mA...



I agree to the first and last, but I firmly believe that all plants benefit from diffused light, simply because it can penetrate in deeper areas and shade is largely avoided.
But there is no need to make already diffused light even diffuser. IMO, QB's and strips offer already diffuse light because of the multiple diodes/angles and plants would not benefit with an additional diffusor.



Agreed!
Back in the 80's I have hidden many beautiful ladies in milky foil greenhouses and they've always done better as my outdoor plants.

lol, clouds, good one.....................America is corn country for a reason lots of land, water, chems, sunlight. High DLI plants possibly performing "better" with diffuse light is due to other aspects=lower temps, higher moisture content imo. Indoors that's a solvable issue.

Show me the studies gentleman!====with cannabis. Lets see some 10+lb plants under diffuse glass,hoop house, high tunnel,etc. Plenty of them outdoors in full direct light.

Stick some diffusers on your cobs and get back to me how it compared to bare. Uniform light(strips/boards) does have it's benefits indoors IF it doesn't cut the ppf/w. I'm all for hanging reflective material because it doesn't affect the light source(s)output ....but diffuse lenses, filters, coatings do.

 

[Randomblame]

lol, clouds, good one.....................America is corn country for a reason lots of land, water, chems, sunlight. High DLI plants possibly performing "better" with diffuse light is due to other aspects=lower temps, higher moisture content imo. Indoors that's a solvable issue.

Show me the studies gentleman!====with cannabis. Lets see some 10+lb plants under diffuse glass,hoop house, high tunnel,etc. Plenty of them outdoors in full direct light.

Stick some diffusers on your cobs and get back to me how it compared to bare. Uniform light(strips/boards) does have it's benefits indoors IF it doesn't cut the ppf/w. I'm all for hanging reflective material because it doesn't affect the light source(s)output ....but diffuse lenses, filters, coatings do.

Like this...?

 

[PSUAGRO.]

Like this...?View attachment 4041504

Very Nice......... damn Google

The cannabis plants outside of the complex must be even bigger....... lol

 

[Rocket Soul]

Every other grower that used those panels had mediocre results, tang getting those numbers he did with 9.6w per sq ft in flower threw up a lot of red flags in here, he bounced soon after.........his runs weren't replicable by other skilled auto guys, ever......hmmmmm.




nice catch..............turn on, tune in, drop out

You have to remember that he runs his lights 20-4 so those 9.6 w/sq foot is like 16w/ sq foot at 12-12 in regards to DLI. With specialized spectrum and genetics on point, aswell as running the plants "individualized" instead of all your plants on the same schedule it is still possible but maybe not plausible.
Also a lot of people has bolted from RIU led section in the last year(s) as this place grown less enjoyable. Nobody here doubts Supra just cause he aint around here anymore...

 

[Randomblame]

You have to remember that he runs his lights 20-4 so those 9.6 w/sq foot is like 16w/ sq foot at 12-12 in regards to DLI. With specialized spectrum and genetics on point, aswell as running the plants "individualized" instead of all your plants on the same schedule it is still possible but maybe not plausible.
Also a lot of people has bolted from RIU led section in the last year(s) as this place grown less enjoyable. Nobody here doubts Supra just cause he aint around here anymore...

Did you know his older vids, where he used 300w Apollo LED lights with generic blurples?
I mean this 6 x18 LED-pucks in red housings, 180w from the wall, which you could buy also on Alibaba a few years back..? He changed two of the pucks with white Luxeon Rebel pucks and called this an ultimate upgrade.
He got nearly the same results using 2 of this 180w lights also in a 20-4 shedule. I belive, it was a AutoExtreme grow, Dutch Passion genetics, as always.
Later he switched from 2x 180w to 2x 75w and got nearly the same results..
TaNg, was of course payed from Dutch Passion, because we have a grow magazin, called THcene and there was an interview with him maybe 1-1,5 years ago. He described himself as a freelancer, product tester and as a long time friend. Unfortunately I disposed of it with the waste paper
but in summary, one can say he is a lying big-mouthed showman.
He only did advertising for the lamps, in whose development Dutch Passion by the way was also involved.

 

[Rocket Soul]

I agree, defo suspicious an unplausible but i dont think being involved with comercial interest is in it self discualifying, we have a lot of decent advertisers here on riu. Anyways, maybe get this thread back to q-strips

 

[Randomblame]

Many pictures from his plants are still used on DP's website. If he had said that he works for DP everything would have been okay. But so, I call him a liar.
But you're right, back to the Q-strips ..