301B strips - Kingbrite 1280 pcs (0.45watt) Vs Umol/Meijiu 2400 pcs (0.25watt) which is best

C

CBS2020

Active Member
I have spent hours and hours researching and reading, learning so much from people on this forum.

One thing i dont understand is how two manufactures can use the same chip, driver and have similar PPFD (at least in the center) yet one has almost twice the amount of leds

Umol KLZ-650W 8 bar - 80watt per bar with 300pcs (total 8 bar 2400pcs) LM301B = 0.25 watt per chip
Meanwell HLG-600

Kingbright 600W 5 bar - 70watt per bar with 256pcs (total 5 bar 1280pcs) LM301H = 0.45 watt per chip
Meanwell HLG-600

Meijiu A8 650W is similar with 1920pcs and 0.31watt

How can two bars use the 'same' chip and the same driver, both around 1200 PPFD (in the centre) have two complete different watt per chips?

What is actually happening with the two boards, with one running almost double? Is the umol over driving the leds or the kingbright really inefficient ?

Thank you for the wisdom !
 
C

CBS2020

Active Member
A LM301B chip that samsung says uses 0.2watt then 600watt driver can really run 2880 pcs (based on 96% efficiency using meanwell spec for HLG-600)

So if you only use 1920 pcs like meijiu, then is each chip getting 0.31 watt or 0.45watt for the kingbrite and using 600watt while at 100% ?
If this is the case is the life span reduced of the led and does create a higher PPFD spead ?


Maybe it comes down to cost as its expensive to run more leds (umol runs the highest amount 2400 pcs on a HLG-600 that i see so far)

KLZ-"650" 8 bar 2400pcs is ~530USD
Kingbrite 600w 5 bar 1280 pcs ~470-515USD depending on 301B or H
Meijiu 650watt 8 bar 1920 pcs $~490USD

All have similar PPFD in the center (1200) but the KLZ is better at the edges

With Kingbrite i can customize the bars they send me and add separate 730 and UV bars to use at different stages that can be on/off as needed.
 
Y

ypbiscuit

Member
Star Dog said:
What the difference between Lm301B, H, etc?

Thanks SD
Click to expand...
CBS2020 said:
A LM301B chip that samsung says uses 0.2watt then 600watt driver can really run 2880 pcs (based on 96% efficiency using meanwell spec for HLG-600)

So if you only use 1920 pcs like meijiu, then is each chip getting 0.31 watt or 0.45watt for the kingbrite and using 600watt while at 100% ?
If this is the case is the life span reduced of the led and does create a higher PPFD spead ?


Maybe it comes down to cost as its expensive to run more leds (umol runs the highest amount 2400 pcs on a HLG-600 that i see so far)

KLZ-"650" 8 bar 2400pcs is ~530USD
Kingbrite 600w 5 bar 1280 pcs ~470-515USD depending on 301B or H
Meijiu 650watt 8 bar 1920 pcs $~490USD

All have similar PPFD in the center (1200) but the KLZ is better at the edges

With Kingbrite i can customize the bars they send me and add separate 730 and UV bars to use at different stages that can be on/off as needed.
Click to expand...
The 8 bar is 1000w. Talking to a rep now

1000w 8 bars, each bar has 306 lm301b + 12 osram 660nm.

650w 6 bars , each has 204 lm301b + 8 osram 660nm
 
C

CBS2020

Active Member
ypbiscuit said:
The 8 bar is 1000w. Talking to a rep now

1000w 8 bars, each bar has 306 lm301b + 12 osram 660nm.

650w 6 bars , each has 204 lm301b + 8 osram 660nm
Click to expand...
Thanks for the reply.
umol have a 650w 8 bar and 1000w 8 bar light - im quoting the 650w 8 bar specs, here is the link :)

This product is no longer available.

This product is no longer available.
www.alibaba.com

So ultimately is this correct.
600W / 0.2w (samsungs rating on how many watts the LM-301B runs at) = 3000 potential led can be run (once you factor in ~4% loss its a little less but is this how they can run 2400 led and other companies just use less leds like 1280 but this means more watts are run through them and therefore they are less efficient ?
 
C

CBS2020

Active Member
p0opstlnksal0t said:
The meijiu F8 lights appear to be the best spec'd china lights I've seen so far. @bk78 is running some. Check out his grow log
Click to expand...
Thanks for the reply.

The Meijiu A8/F8 650W is runs 1920 LM301B chips which means each is running at 0.31 watt (the higher the watt the less efficient).

As above

Umol KLZ-650W 8 bar - 80watt per bar with 300pcs (total 8 bar 2400pcs) LM301B = 0.25 watt per chip
Meanwell HLG-600

Kingbright 600W 5 bar - 70watt per bar with 256pcs (total 5 bar 1280pcs) LM301H = 0.45 watt per chip
Meanwell HLG-600

If either Meijiu added 2 more bars to their setup then they would also have 2400 pcs which = 0.25 watts. Seems to me the Umol is the most efficient or am i not understanding something ? Both Umol and Meijiu run the same detachable frame.

Kingbright uses a more basic frame but allows you to add more bars, ideally i would have 730nm bar and UV bar so they can be run only as needed.
Anyone know how the drivers work ? If less than 600w is used does it reduce overall power to the boards or just evenly distribute it ?
 
P

p0opstlnksal0t

Well-Known Member
CBS2020 said:
Thanks for the reply.

The Meijiu A8/F8 650W is runs 1920 LM301B chips which means each is running at 0.31 watt (the higher the watt the less efficient).

As above

Umol KLZ-650W 8 bar - 80watt per bar with 300pcs (total 8 bar 2400pcs) LM301B = 0.25 watt per chip
Meanwell HLG-600

Kingbright 600W 5 bar - 70watt per bar with 256pcs (total 5 bar 1280pcs) LM301H = 0.45 watt per chip
Meanwell HLG-600

If either Meijiu added 2 more bars to their setup then they would also have 2400 pcs which = 0.25 watts. Seems to me the Umol is the most efficient or am i not understanding something ? Both Umol and Meijiu run the same detachable frame.

Kingbright uses a more basic frame but allows you to add more bars, ideally i would have 730nm bar and UV bar so they can be run only as needed.
Anyone know how the drivers work ? If less than 600w is used does it reduce overall power to the boards or just evenly distribute it ?
Click to expand...
You're wrong The A8 is different from the F8. The F8 runs 2560 diodes
 
welight

welight

Well-Known Member
whats wrong with all this... WHAT IS THE FLUX BIN being used, if they dont tell you the flux bin its smoke and more smoke

if you laying out your hard earned you need flux bin data, 301 has big range of flux and price
cheers
 
C

CBS2020

Active Member
p0opstlnksal0t said:
You're wrong The A8 is different from the F8. The F8 runs 2560 diodes
Click to expand...
Ah yes i was mistaken, wow what a huge difference in leds !!!
Makes it 0.234 watts per chip which is great !

So no one has confirmed my theory that the less chips are used and the less the driver is loaded, the same 600 watts is spread through the number of leds and less efficient they become.

Now time to ask the companies if adding more bars to the driver will work or if there is some other reason stopping this
 
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C

CBS2020

Active Member
welight said:
whats wrong with all this... WHAT IS THE FLUX BIN being used, if they dont tell you the flux bin its smoke and more smoke

if you laying out your hard earned you need flux bin data, 301 has big range of flux and price
cheers
Click to expand...
Yes good point, i could go 301H and know im getting the highest bin 301H, but PPFD and efficiency of the driver / led ratio with correct spectrums is more important atm
 
Rocket Soul

Rocket Soul

Well-Known Member
Yes, It kinda goes without saying: higher wattage per chip the lower efficiency, usually to somewhere around 10% for doubling watts per chip. Leverage diode count
 
Star Dog

Star Dog

Well-Known Member
Rocket Soul said:
Yes, It kinda goes without saying: higher wattage per chip the lower efficiency, usually to somewhere around 10% for doubling watts per chip. Leverage diode count
Click to expand...
So if I bought another board of 301H I'd be able to wire it between my two other boards running from a 240w meanwell driver and make it more efficient?
 
Rocket Soul

Rocket Soul

Well-Known Member
Dont know what you mean. What board, with what specs? It depends on the board.
Also what driver, the 240 comes in many different versions.
 
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Cappuchino

Cappuchino

Well-Known Member
Star Dog said:
Lower wattage = more efficienct, so would one 240w driver running 3 boards be more efficient than the same driver running two boards with the same 240w.
Click to expand...
Current determines efficiency, not wattage. So depending on your driver EACH diode will be more efficient. Which will extend their life span. But overall you will have same PPFD.
 
Rocket Soul

Rocket Soul

Well-Known Member
Star Dog said:
Lower wattage = more efficienct, so would one 240w driver running 3 boards be more efficient than the same driver running two boards with the same 240w.
Click to expand...
Yes. By a few % and better spread. But not knowing which driver or board youre using and planning to add i cant say for sure if its going to work.
 
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