Samsung LM561C strips. Please help with power supply

goanrg

goanrg

Member
Hello everybody!

Lately, I've been reading a lot about quantum boards and analogs built on Samsung LM561C leds.
Start up costs are a major barrier to me. So, I've decided to give it a try by building a light fixture for my microgrow using led strips.

I've bought 5 meters of Samusng lm561c 3500K 120LEDs/m DC24V CRI80 Constant current. And 5 meters of 5000K.

I plan to wire it in Series/Parallel. 5 strings with 64 leds on each string.
If I will wire them to a HLG-185H-C1050B, will it work good or it it burn my strips?

Also if I use 3500K and 5000K in the same circuit will it be a issue?

Thank you all in advance! This forum is a goldmine for noobs like me trying to DIY :)
 
LED Light User

LED Light User

Active Member
U need min. 95 Vdc to max. 190 Vdc in Series in Use from the driver. Every 24 Vdc Stripe Part are 8 Emitter in Serie. Cut off every part and wire min. 4 to max. 7 parts in serie
4×24 Vdc = 96 Vdc
to 7×24 Vdc= 168 Vdc
To split the current use 6 to 10 Series parallel and it will work well.
Link for the stripes?
 
V

VegasWinner

Well-Known Member
Agreed but 8 segments work better each segment is 7 diodes at 2.9v total 20.3v/ segment. Use max volts closest to Vf max for driver.
For a 1050 driver 6 rows creates the optimum current draw per diode. 5 rows will drive the diodes at 200mA max current not max lumens.
For a 1400 driver use 8 rows of 7 segments for the same results. Don't forget to ground the fixture as cc needs a common ground use a wire from ground to frame
 
robincnn

robincnn

Well-Known Member
I agree with @LED Light User recommendations.


@VegasWinner
I think the circuit is already wired as 8 diodes per string to get 24V. this cannot be changed.

I recommend not try to push 200mA per string. lets say there is 10 strings x 8diodes each, if you push 10x200mA then the diodes near power entry will take more current than the once at end and will fry.
Also the running 561C at its max 200mA on a strip may not be a good idea.

Great idea if you plan on breaking into smaller sections. The voltage drops on these strips as they get longer.
Samsung or bridgelux Strips would have been a better choice as you know you getting original led. These hard strips have a much better electrical/thermal design.

also note that it is important to consider voltages. cannot just install any and as many of LED component in series to get to desired voltages.
just like you wont use a 100V rated wire on a 200V application. incase of strips the +ve and -ve traces need to be at a certain distance for a specific voltage. otherwise component may fail. voltage may arc and burn strip.

If i had 24V strips i would run them at 24V, may be 48V with 2 in series.
However this is DIY you can do anything you like :-D



nachooo said:
Hello, just a quick question...will this driver that apparently is designed to run led strips be able to power the strips you have mentioned above?
The 24V 10 amp 240 watts type cost only 20 euros that seems a very cheap way to power them...
http://www.ebay.es/itm/Universal-12...hash=item43cdf7a6f4:m:m0arTjGRJZgAIFw8y5BV4ZQ
Click to expand...
yes it will. Samsung or bridgelux Strips would be a better choice if you want higher wattage system
 
V

VegasWinner

Well-Known Member
robincnn said:
I agree with @LED Light User recommendations.


@VegasWinner
I think the circuit is already wired as 8 diodes per string to get 24V. this cannot be changed.

I recommend not try to push 200mA per string. lets say there is 10 strings x 8diodes each, if you push 10x200mA then the diodes near power entry will take more current than the once at end and will fry.
Also the running 561C at its max 200mA on a strip may not be a good idea.

Great idea if you plan on breaking into smaller sections. The voltage drops on these strips as they get longer.
Samsung or bridgelux Strips would have been a better choice as you know you getting original led. These hard strips have a much better electrical/thermal design.

also note that it is important to consider voltages. cannot just install any and as many of LED component in series to get to desired voltages.
just like you wont use a 100V rated wire on a 200V application. incase of strips the +ve and -ve traces need to be at a certain distance for a specific voltage. otherwise component may fail. voltage may arc and burn strip.

If i had 24V strips i would run them at 24V, may be 48V with 2 in series.
However this is DIY you can do anything you like :-D




yes it will. Samsung or bridgelux Strips would be a better choice if you want higher wattage system
Click to expand...
I believe the individual already explained he was using hard strips I don't need your explanation. I already understand. Select others I choose to avoid your group
 
goanrg

goanrg

Member
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 :)
 
V

VegasWinner

Well-Known Member
Doctor Derp said:
Well that was a rude and totally unnecessary post. Kinda like this one.
Click to expand...
Actually there is history with this group. You want to be rude and blame others go right ahead. That is what is wrong here. Did this person ask you to be rude on their behalf or do you do that to ruin threads or attack people for no reason.
How about you focus on your behavior not mine we both will do well. You do not know history I stand up not rude. Difference
 
V

VegasWinner

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...
That looks like a great choice
 
Doctor Derp

Doctor Derp

Well-Known Member
VegasWinner said:
You are on ignore for your rudeness so please don't waste any more time
Click to expand...
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.
 
DarthPlagueis

DarthPlagueis

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...
What's the price on these?

Nichia is such a leading institution of the LED world and they hardly get any praise on these forums. Every couple years they come out with a new product and crush the competition. I believe Nichia invented the first SMD and COB.
 
welight

welight

Well-Known Member
DarthPlagueis said:
What's the price on these?

Nichia is such a leading institution of the LED world and they hardly get any praise on these forums. Every couple years they come out with a new product and crush the competition. I believe Nichia invented the first SMD and COB.
Click to expand...
Going to be under USD29. Yes totally agree lots of focus on LM561C, but Nichia 757V2 shades it. They also have a wide CCT range ie 2000k and 2200k which should be kick arse for flowering. I think the other issue is that Samsungs latest 220LPW is a 3030 footprint and with the new Cree MID power release imminent with hi Eff 3030, 3030 is where its at moving forward, Nichia was the developer of the first blue led, need blue to get white so they are the innovators and they have more than twice the global market in mid power of their nearest competitors, they are players
Powered board, close pitch make for even light, lightsabre comes to mind

Cheers
Mark
 
Last edited:
P

PurpleBuz

Well-Known Member
welight said:
Going to be under USD29. Yes totally agree lots of focus on LM561C, but Nichia 757V2 shades it. They also have a wide CCT range ie 2000k and 2200k which should be kick arse for flowering. I think the other issue is that Samsungs latest 220LPW is a 3030 footprint and with the new Cree MID power release imminent with hi Eff 3030, 3030 is where its at moving forward, Nichia was the developer of the first blue led, need blue to get white so they are the innovators and they have more than twice the global market in mid power of their nearest competitors, they are players
Powered board, close pitch make for even light, lightsabre comes to mind

Cheers
Mark
Click to expand...
Are the strips custom made by you (cutter) using the nichia chips or is the hard strip made by nichia ?
 
DarthPlagueis

DarthPlagueis

Well-Known Member
welight said:
Going to be under USD29. Yes totally agree lots of focus on LM561C, but Nichia 757V2 shades it. They also have a wide CCT range ie 2000k and 2200k which should be kick arse for flowering. I think the other issue is that Samsungs latest 220LPW is a 3030 footprint and with the new Cree MID power release imminent with hi Eff 3030, 3030 is where its at moving forward, Nichia was the developer of the first blue led, need blue to get white so they are the innovators and they have more than twice the global market in mid power of their nearest competitors, they are players
Powered board, close pitch make for even light, lightsabre comes to mind

Cheers
Mark
Click to expand...
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.
 
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