Spuds Garden
- Thread starter ThatSpudGuy
- Start date
coreywebster
Well-Known Member
What are they EB strips? Not sure on the stats on them so don't know if they should be series, parallel or both.
@Randomblame will know.
ThatSpudGuy
Well-Known Member
as far as i know it should be wired in series
Randomblame
Well-Known Member
Its a constant current driver with 229v and 1400mA and you use 1ft. EB strips with 19,5v at 350mA nominal and 20,5v at 700mA maximal.
How to connect them depends on the degree of efficiency you want to reach. If efficiency is not so important I would drive them with their 700mA max current which means you need two parallel strings to split the current in half. To make use of the whole driver potential you need at least 11 strips in series(11x 20,5=225,5v). You could use only 10 but with 205v and 1,4A you get only ~290w.
So to use the whole 320w with the minimum amount of strips you need 22 EB 1footers connected in 11s2p(11 in series, two times in parallel).
To make it more efficient you meed more parallel strings to reduce the drive current. 1400mA :3 strings á 11 = ~467mA per strip, 4 parallel strings means 350mA per strip. But you still need 11 strips per string. So to reach datasheet efficiency you would need 44pcs.
EB gen2 has 175lm/w at 350mA and with 700mA it's still ~165lm/w.
To use this driver with only 10pcs 1ft. strips in series without the risk damaging them you need to turn the build in current regulator down to the minimum(~50%). The current flow would be reduced to ~700mA which is the maximum current of a single strip and you would be forced to leave the current flow right there. Maybe 150-160w max., makes no sense.
Do you need 320w? How much strips did you have? Can you order more and can you send the driver back to get another one?
These strips have a voltage limit cause their internal copper traces are not made for high voltage. A parallel setup fits much better. For 24 EBgen2 1 footers I would recommend to use an HLG-320H-42A or B. All strips connected in parallel and distributed across two of the frames above. Each frame needs ~20,5v and has 12 strips in parallel.
The two frames connected in series to the driver means they need a vf of ~41v and the current is divided evenly thru 12 parallel strings..
So the driver current of 7,65A would be splitted between 12 parallel strings of two strips in series so each strip gets ~637mA. Its probably ~650mA or more cause all these Meanwells usually have slightly higher max. current. With 8A max. it would be 666mA per strip and you would have 336w net and ~355w total(at the wall). And the driver would BTW also work in CC mode because its a CV/CC driver and 41v is already in its CC area.
The B version would make the light dimmable down to 0 output/off. You would not need an additional on/off switch. Only a cheap B100k potentiometer from ebay with at least 108k true resistance.(checked that with multimeter)
You can find 5 or 10 packs on e3ay/am4zon for 3 or 4 bucks.
If its too late to change the driver you are forced to use the first wiring example and create a 11s2p series-parallel circuit. But do not be disappointed if you only get 300w or less...
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ThatSpudGuy
Well-Known Member
damn thats a big wall o text haha, really wish i could understand what it all means haha.
but yeah i mean i only need to run between 250-300 watts and ghat will do me. returning the driver cant be done and cant buy more strips as theyre out of stock. all that said you wreckon i should use the wiring in the first picture do you?
ThatSpudGuy
Well-Known Member
damn this is pretty bright haha
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ThatSpudGuy
Well-Known Member
new tent all setup 
light is pulling just shy of 300 watts
light is pulling just shy of 300 watts
dstroy
Well-Known Member
nice
swedsteven
Well-Known Member
2×2
Or
4×4 must be
Love the light
ThatSpudGuy
Well-Known Member
80cm x 80cm
ThatSpudGuy
Well-Known Member
been a while since i updated. to anyone who remembers me saying i was treating my mother in laws cancer, she passed on thursday. she put up a great fight. 5 years suffering she is finally at peace.
on another note i harvested my CnC and smell devine.
on another note i harvested my CnC and smell devine.
ThatSpudGuy
Well-Known Member
whats going on right now
2x Super Lemon Haze and 3x exodus cheese
2x Blueberry cookies and 3x diesel
And my CBD cream and cheese
2x Super Lemon Haze and 3x exodus cheese
2x Blueberry cookies and 3x diesel
And my CBD cream and cheese
ThatSpudGuy
Well-Known Member
cheers bro much appreciated
emeraldbuds
Well-Known Member
Nice!!! Can’t wait to see how you get on with it.
emeraldbuds
Well-Known Member
So sorry to hear man. I remember you were trying to get the oils made up. Hope you and the family are doing ok
ThatSpudGuy
Well-Known Member
loving it so far man, plants under it are so tight node spacing and its only set to about 100 watts
cheers bro its been a tough few weeks but were getting through it. cancer got so bad was nothing we could do
emeraldbuds
Well-Known Member
That fucking sucks man. Keep the head up!
emeraldbuds
Well-Known Member
How much the LED build cost you? Did you import from China or source locally?
ThatSpudGuy
Well-Known Member
just keeping strong for her man
man it was so surprisingly cheap i mean people that build and sell them are making a tidy profit. €140 for strips and driver. bought on Digikey.ie and they say on the site that vat needs to be payed before delivery but i got no other charges.
FYI if your thinking of buying id buy now because theyre in such demand and with brexit and everything shit is gonna go up