Samsung LM561C strips. Please help with power supply

V

VegasWinner

Well-Known Member
DarthPlagueis said:
Cree has had their 3030 mid power smd for years now though, last time I checked they were at 120lumens per watt, but that was years back. Man oh man the options coming out are getting crazy, how many smds does that light bar hold? Only problem I see with the design is that it's 49v which can be tricky getting to fit onto drivers.

Why not 36-40v? Spread the chips along the 560mm a bit more and get a lower v rating.

Perhaps, a 18" double staggered led strip would be a good design as well.
Click to expand...
49v x 2 = 98v x 2 = 196vF enough for a hlg-C-1050A/B driver with a Vf of 186vF
 
goanrg

goanrg

Member
@VegasWinner
I plan to use 4 strings 3500K and 2 strings 5000K.
Should I worry about thermal runaways? The strip doesn't have any rezistors. Maybe I should add them.
What would you suggest?
 
welight

welight

Well-Known Member
DarthPlagueis said:
Cree has had their 3030 mid power smd for years now though, last time I checked they were at 120lumens per watt, but that was years back. Man oh man the options coming out are getting crazy, how many smds does that light bar hold? Only problem I see with the design is that it's 49v which can be tricky getting to fit onto drivers.

Why not 36-40v? Spread the chips along the 560mm a bit more and get a lower v rating.

Perhaps, a 18" double staggered led strip would be a good design as well.
Click to expand...
Cree has a brand new Mid Power range coming, totally different to their existing range, if you look at the drive details back in thread board at 1,2 amp only hits 45v
Cheers
Mark
 
welight

welight

Well-Known Member
goanrg said:
@VegasWinner
I plan to use 4 strings 3500K and 2 strings 5000K.
Should I worry about thermal runaways? The strip doesn't have any rezistors. Maybe I should add them.
What would you suggest?
Click to expand...
Here we ran banks of 9 strips on 400 watt ZPE drivers, no issues, we used the board heat to cure conformal coating on the boards to make them waterproof, turned our production white like a scene outa willie wonka

cheers
Mark
 
V

VegasWinner

Well-Known Member
goanrg said:
@VegasWinner
I plan to use 4 strings 3500K and 2 strings 5000K.
Should I worry about thermal runaways? The strip doesn't have any rezistors. Maybe I should add them.
What would you suggest?
Click to expand...
As hard strips they are already balanced circuits. Connecting them in parallel will be fine. You are going to enjoy the color. You can always customize it with more options or more or less of the same colors
 
K

kony brado

Well-Known Member
welight said:
Your might like our new 560mm hard strip, 48V, Nichia 210 Lumens per watt, bit better than LM561C. comes in 2000k to 6500k, in stock in 3 weeks


Cheers
Mark
Click to expand...
hi there
it appears that these "210 lumen/watt " diode stripes are 186 lumen/watt at 24.8 watt. (you didn't provide data on color temp)
Samsung f stripes 3500k 2 feet singel raw at 24w are 181 lumen/watt and cost 14.4$ for one ,10.7$ per 25 etc.

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

If you go with double raw 2 feet you'r at 196 lumen/watt and it will cost you 26.5$ for one, 20.4 for 25 etc.

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8U521560WW/1510-2222-ND/6624006

Did i mentioned free shipping world wide on orders over 100$ with digikey ?
samsung is in the game and wins easy with lower price.
pice:peace:
 
welight

welight

Well-Known Member
kony brado said:
hi there
it appears that these "210 lumen/watt " diode stripes are 186 lumen/watt at 24.8 watt. (you didn't provide data on color temp)
Samsung f stripes 3500k 2 feet singel raw at 24w are 181 lumen/watt and cost 14.4$ for one ,10.7$ per 25 etc.

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

If you go with double raw 2 feet you'r at 196 lumen/watt and it will cost you 26.5$ for one, 20.4 for 25 etc.

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8U521560WW/1510-2222-ND/6624006

Did i mentioned free shipping world wide on orders over 100$ with digikey ?
samsung is in the game and wins easy with lower price.
pice:peace:
Click to expand...
So to summarise, if Im less than 26.50 for 1 and 20.4 for 25 Im competitive, Im up for that and if we compare to https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8U521560WW/1510-2222-ND/6624006 we are at 9000+lumens at 1.19A so good comparsion
Cheers
Mark
 
DarthPlagueis

DarthPlagueis

Well-Known Member
welight said:
Cree has a brand new Mid Power range coming, totally different to their existing range, if you look at the drive details back in thread board at 1,2 amp only hits 45v
Cheers
Mark
Click to expand...
My apology Mark, so @1.2 A these push 45v, that leaves us with

Hlg-120-1050= 3 Boards
Hlg-185-1050= 4 Boards
Hlg-240-1050= 5 Boards

What's the spread on these from the side? Everytime I'm about to build something, something comes along that's better. I was gonna do the Wavy boards but I guess I'll wait to see the PAR output on these babies. Would like to have 4 boards on a 1050 driver, giving me 24k LUX and just under 200 watts.

Are you gonna add solderless connections on the boards? Are these 29$ AUS?
 
InTheValley

InTheValley

Well-Known Member
i had an idea of a wavy panel, with Strips,or cobs and mono 5W diodes with lenses

If you put the strips on a wavy board, they HAVE to have optics, otherwise its useless,

JMO, thats my thinking anyways, lol.
 

Attachments

nc208

nc208

Well-Known Member
goanrg said:
Ok guys, Thanks for the help! Now everything is getting crystallized in my head :)

I will go with HLG-120H-C1050A , 6 strings with 48 leds each
This will drive the strip soft at 175mA per string at max power.

My grow space is tiny and I think this setup will nail it.

Thank everybody again! I will give back to this community as soon as I get some more experience :)
Click to expand...
Use this, if you haven't already ordered.
http://www.samsung.com/global/business/led/calculator_pkg/calculator.html

Plug in your specs i.e. cct cri, s# and a# and # of LED's being used. You can determine best driver for your strips.
I just ordered a pwm-120-24 to run my strips, its a 120w 24v 5A, my strips have 96 leds on a 400mm by 25mm hard strip they have 12 groups of 8 leds so Im going to run them at .10416a each led, I chose CV because I'll wire them parallel because 5A \ 4 strips so 1250 ma per strip \ 12 groups per strip 104.16 ma each. This will be approx 5384 lumens per strip so 120w will do 21,536 lm, the calculator shows me this will drive them at 183.8 lm/w which is right where i want it.
 
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nfhiggs

nfhiggs

Well-Known Member
Doctor Derp said:
Rudeness? Really? Hey pot, meet kettle.

You must not remember what I said to you a couple weeks ago in your own thread here. That's fine. I was clearly wrong to compliment you and your work. I shouldn't be suprised, really.. when so many say negative things about you they can't all be wrong. I should have known that even children can create. But you didn't create, did you? You saw an excellent idea and decided you wanted to steal it to 'stick it to the man'. Certainly not illegal in any way, but for sure a dirtbag move.

You say you want nothing to do with certain groups but insist on using their ideas and claiming originality.

Nobody here buys that crap.

You say you want nothing to do with certain group but insist on chasing down their posts and making your rude insistence that they leave *you* alone, when in fact you seek out this conflict at every turn.

I don't even think this is about lighting with you anymore. This is nothing short of a small person trying to make waves so people will show you attention and give you ill-deserved sympathy.

I, for one, hope you one day grow up and put away your toolbox of troll antics. Until then, go fuck yourself.
Click to expand...
I've learned this guy turns fucking psycho if you try to correct him when he is wrong about something. Then complains people are bullying him and goes to pout in a corner for a while. Guy has serious mental issues IMO.
 
nfhiggs

nfhiggs

Well-Known Member
welight said:
Your might like our new 560mm hard strip, 48V, Nichia 210 Lumens per watt, bit better than LM561C. comes in 2000k to 6500k, in stock in 3 weeks


Cheers
Mark
Click to expand...
Nice, but I don't see the big advantage other than the available lower CCT. Samsung F series 560mm strips in 3000K are 4400 L at ~26W for $14 each. Comparable performance for half the cost. No offense, but I think the price point is just too high.
 
welight

welight

Well-Known Member
nfhiggs said:
Nice, but I don't see the big advantage other than the available lower CCT. Samsung F series 560mm strips in 3000K are 4400 L at ~26W for $14 each. Comparable performance for half the cost. No offense, but I think the price point is just too high.
Click to expand...
actually it was pointed out earlier in the thread these are comparable to the denser F strip at USD26.00
Cheers
Mark
 
welight

welight

Well-Known Member
DarthPlagueis said:
My apology Mark, so @1.2 A these push 45v, that leaves us with

Hlg-120-1050= 3 Boards
Hlg-185-1050= 4 Boards
Hlg-240-1050= 5 Boards

What's the spread on these from the side? Everytime I'm about to build something, something comes along that's better. I was gonna do the Wavy boards but I guess I'll wait to see the PAR output on these babies. Would like to have 4 boards on a 1050 driver, giving me 24k LUX and just under 200 watts.

Are you gonna add solderless connections on the boards? Are these 29$ AUS?
Click to expand...
These will spread the light wide as leds are 120 degrees unless you choose to collimate with an optic, they will be AUD32.99, they will come pre soldered with wires in what ever length you would like
Cheers
Mark
 
nfhiggs

nfhiggs

Well-Known Member
welight said:
actually it was pointed out earlier in the thread these are comparable to the denser F strip at USD26.00
Cheers
Mark
Click to expand...
If you want to run them at 50W, yes - but at 25W they have virtually the same performance as the $14 dollar Samsung 22 inch strips. The max current on the Samsung strips, based in the specs of the LM561C is 1800 mA, so the smaller strips won't quite reach 50W but close.

What is the diode count on your strips and what is their max current?
 
welight

welight

Well-Known Member
nfhiggs said:
If you want to run them at 50W, yes - but at 25W they have virtually the same performance as the $14 dollar Samsung 22 inch strips. The max current on the Samsung strips, based in the specs of the LM561C is 1800 mA, so the smaller strips won't quite reach 50W but close.

What is the diode count on your strips and what is their max current?
Click to expand...
Totally agree, but we did not design them to run at 25 watts, if we did we would have halved the chip density and the price, so the same argument applies to the denser Samsung strip. These have 112 leds on them and Nichia Chip is max 180ma so max drive on these could be 2.8Amp
Cheers
Mark
 
nfhiggs

nfhiggs

Well-Known Member
welight said:
Totally agree, but we did not design them to run at 25 watts, if we did we would have halved the chip density and the price, so the same argument applies to the denser Samsung strip. These have 112 leds on them and Nichia Chip is max 180ma so max drive on these could be 2.8Amp
Cheers
Mark
Click to expand...
So yours is actually midway between the two Samsung configurations - 72 diodes for the smaller single row strip and 144 diodes for the double row. It does not really directly compare to either to be fair.

Samsung also makes this beast - 288 diodes for $48 bucks. Basically a 44" x 1.5" Quantum Board. If I had a few hundred bucks to spare I'd grab 6 of these and two 46" x 4.85" heatsinks.
 
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