The Chinese Quantum Board Knock Off Builds

EmeraldØsiris

EmeraldØsiris

Well-Known Member
BIANCAADA6 said:
i dont unders

I dont understand is this kit better?
Click to expand...
Yeah, they have the newest 301b chips. But they are a bit more expensive. But if they provide free shipping this might not be that big of a difference. Have a chat with Rita at Meijiu. She'll fill you in... I'm very satisfied with my purchase from them albeit I got the 561c's ... Would have gotten the 301b's tho in hindsight.
 
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butterfeet

Member
Hey, I'm new to LEDs and was looking at buying some Shenzhen Mufue 96ct LED sunboards from alibaba with the lm561c diodes.

I was wondering if someone can check my math as far as figuring out the correct driver.
The specs are: 22-24v
700-900mA per row (48 diodes per row, 2 rows per board)
44-48 watts per board
I would like to run 8 boards on 1 constant current driver.
So If I want to run my diodes at ~75% (700mA per row x2 at 23.5v) the watts should come out around 33w per board (?)
If I was to wire all 8 boards in series to the driver it would need a total of 23.5v x 8 = 188v
Amps would be 1400mA across all boards , total wattage would be 264w
So the driver I would use would be the HLG320-C1400 (specs. v114-v229, 1400mA, 320w)
If someone can let me know if I'm on the right track it would be much appreciated, I've been researching on my own but really don't want to buy the wrong parts.
thanks

 
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ApfelStrudel

Well-Known Member
butterfeet said:
Hey, I'm new to LEDs and was looking at buying some Shenzhen Mufue 96ct LED sunboards from alibaba with the lm561c diodes.

I was wondering if someone can check my math as far as figuring out the correct driver.
The specs are: 22-24v
700-900mA per row (48 diodes per row, 2 rows per board)
44-48 watts per board
I would like to run 8 boards on 1 constant current driver.
So If I want to run my diodes at ~75% (700mA per row x2 at 23.5v) the watts should come out around 33w per board (?)
If I was to wire all 8 boards in series to the driver it would need a total of 23.5v x 8 = 188v
Amps would be 1400mA across all boards , total wattage would be 264w
So the driver I would use would be the HLG320-C1400 (specs. v114-v229, 1400mA, 320w)
If someone can let me know if I'm on the right track it would be much appreciated, I've been researching on my own but really don't want to buy the wrong parts.
thanks

Click to expand...

Get a hlg 320h-c1050 driver and hook 12-13 boards in series. If you're buying Mufue boards minimum order is 50 so you'll have enough to build several lights. With 1400 driver you can run 9 boards and still have some overhead voltage.

I got 6 running on a hlg 120h-c1050b topping out at 146W
 
Rocket Soul

Rocket Soul

Well-Known Member
ApfelStrudel said:
Get a hlg 320h-c1050 driver and hook 12-13 boards in series. If you're buying Mufue boards minimum order is 50 so you'll have enough to build several lights. With 1400 driver you can run 9 boards and still have some overhead voltage.

I got 6 running on a hlg 120h-c1050b topping out at 146W
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Its a good idea to keep your voltage undrr 300V, the connectors are usually rated at 300V. Also generally safer tonuse lesser voltage
 
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ApfelStrudel

Well-Known Member
Rocket Soul said:
Its a good idea to keep your voltage undrr 300V, the connectors are usually rated at 300V. Also generally safer tonuse lesser voltage
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13 boards at 23.2V is 301.6V ;)

Regarding safety, we're talking DC here. It's the frequency with AC that kills most of the time. My buddy got hit with 30KV DC and survived with some heavy burn marks on his back ;) but nothing lethal. I have no problem touching those wires with 300V at 1.05A however I don't like the feeling of 220V AC on a 16A breaker.
 
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butterfeet

Member
Am I correct in thinking that driving the LEDs at 1400mA will be close to ~75% of total suggested amperage? It seems like that is pretty standard. Is there any disadvantage to driving more diodes at a lesser amperage?
 
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ApfelStrudel

Well-Known Member
butterfeet said:
Am I correct in thinking that driving the LEDs at 1400mA will be close to ~75% of total suggested amperage? It seems like that is pretty standard. Is there any disadvantage to driving more diodes at a lesser amperage?
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At 1400mA you are supplying each chip with 116.6mA or 0.34W. Chips are rated at 0.3W nominal. With less current and more chips your efficiency will rise some.

Like I said, since you're looking at Mufue your minimum order will be 50 boards. Id drive them softer and up my board count. You will also have lower temps.

I got temp probe mounted behind a heatsink right behind where the row of chips is running and I'm reading 38°C with room temperature of 14-15°C. In summer temps were peaking at 42°C. I'm running my boards at 1050mA or 86mA/0.26W per chip.

IMG_20181214_212639.jpg
 
WeedSexWeightsShakes

WeedSexWeightsShakes

Well-Known Member
Anyone see these yet?

Here i introduce to you for full spectrum for indoor plant and Greenhouse .

Attach the spectrum for reference .

QB-272pcs 120W led grow board kit:

Dimension:165mm*185mm*1mm

PPF : 1100 µmol/s

Efficacy : 2.30 µmol/J

LED quantity:

LM301B 4000K: 160pcs;

LM301B 2700K:88pcs;

Cree XPE 660nm: 14pcs;

Cree XPE 730nm: 2pcs;

Epistar UV 380nm:8pcs.

Color:3000k;

CRI>80;

Warranty: 3 year.

Lumen: 160lm/w.
 
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butterfeet

Member
ApfelStrudel said:
At 1400mA you are supplying each chip with 116.6mA or 0.34W. Chips are rated at 0.3W nominal. With less current and more chips your efficiency will rise some.
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OK, that makes sense to me. I'm still trying to wrap my head around how these boards are wired and how to calculate something like that. Would a single 96 LED board be 12 groups of 8 diodes wired in series running at 116.6mA / 83mA , then all 12 wired together in parallel for a total of 1400mA / 1050mA? Your help is much appreciated.
 
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ApfelStrudel

Well-Known Member
butterfeet said:
OK, that makes sense to me. I'm still trying to wrap my head around how these boards are wired and how to calculate something like that. Would a single 96 LED board be 12 groups of 8 diodes wired in series running at 116.6mA / 83mA , then all 12 wired together in parallel for a total of 1400mA / 1050mA? Your help is much appreciated.
Click to expand...

They are wired 8S12P (24V nominal)
 
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ApfelStrudel

Well-Known Member
butterfeet said:
OK, that makes sense to me. I'm still trying to wrap my head around how these boards are wired and how to calculate something like that. Would a single 96 LED board be 12 groups of 8 diodes wired in series running at 116.6mA / 83mA , then all 12 wired together in parallel for a total of 1400mA / 1050mA? Your help is much appreciated.
Click to expand...

That all applies, yes. If you have a look at Samsungs datasheet for individual chip (561/301) and apply temperatures you can calculate everything pretty precise.
 
ChiefRunningPhist

ChiefRunningPhist

Well-Known Member
What's up guys, got a couple questions...

I've been told that you can't have a driver supply more voltage than what is being supplied by the wall???

Is this true? When I look at a 320h c700a it accepts 90 -305VAC but has an output VDC of 214v - 428v.
Screenshot_2018-12-31-02-19-00.png

This makes me think I've been given wrong information? Will I need 220vac wall to push 220vdc via the driver?

The driver in question is the 320h c1400a, and I'm wondering if I need 220vac to have it supply 224vdc? Thanks.
 
J

Jqwerty1

Well-Known Member
ChiefRunningPhist said:
What's up guys, got a couple questions...

I've been told that you can't have a driver supply more voltage than what is being supplied by the wall???

Is this true? When I look at a 320h c700a it accepts 90 -305VAC but has an output VDC of 214v - 428v.
View attachment 4257846

This makes me think I've been given wrong information? Will I need 220vac wall to push 220vdc via the driver?

The driver in question is the 320h c1400a, and I'm wondering if I need 220vac to have it supply 224vdc? Thanks.
Click to expand...
Never heard anything like that before. Im not an electrician but my meanwell drivers seem to run almost exactly the same on 110 or 220. The way i interpreted the data sheet is that it will supply whatever you set the pot to and what the Board will pull. Apparently, the QB288 Lm301b pulls slighly lower wattage than the Lm516c and Inputting 220v vs 110v only effects the efficiency of the driver. Thats my interpretation though, im no expert.
 
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