selfmedicator462
Well-Known Member
I think im ordering parts today. 8 3590s, 2 HLG-120-1050B on 2 30" heat sinks. Do you think I need to bother with dimming?
New to LED looking for assistance designing a light
- Thread starter selfmedicator462
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selfmedicator462
Well-Known Member
is a 100k pot sufficient for dimming? also whats the difference between the 120,185 and 240 drivers? Ive already sent a price request but want to make sure I get the correct drivers. Sorry I tend to over think things.
Rahz
Well-Known Member
120 = 150 watts
185 = 200 watts
240 = 250 watts
The 2 120s will be just right for 8 3590s.
You probably want dimming if you're vegging in there too. Pots generally have a +-3% accuracy (or slightly more or less depending on which pot. The more expensive ones are more accurate) so it's possible a pot will limit your output to 97% or whatever. For this reason I usually suggest adding a 10K ohm resistor in series with the pot, but since your PPFD is going to be pretty high anyway you could skip the resistor no worries. If you get a pot and wire both drivers to it you will need a 50K ohm pot. If you get a pot for each lamp then you will need 2 100K ohm pots, one for each.
You might like the adjustability of a pot, but I prefer putting a switch and resistor in series between the dim wires. For instance, if wiring two drivers to a switch and resistor, a 25K ohm resistor would provide 50% output. If wiring one driver to a switch and resistor a 50K ohm resistor would provide 50% output.
185 = 200 watts
240 = 250 watts
The 2 120s will be just right for 8 3590s.
You probably want dimming if you're vegging in there too. Pots generally have a +-3% accuracy (or slightly more or less depending on which pot. The more expensive ones are more accurate) so it's possible a pot will limit your output to 97% or whatever. For this reason I usually suggest adding a 10K ohm resistor in series with the pot, but since your PPFD is going to be pretty high anyway you could skip the resistor no worries. If you get a pot and wire both drivers to it you will need a 50K ohm pot. If you get a pot for each lamp then you will need 2 100K ohm pots, one for each.
You might like the adjustability of a pot, but I prefer putting a switch and resistor in series between the dim wires. For instance, if wiring two drivers to a switch and resistor, a 25K ohm resistor would provide 50% output. If wiring one driver to a switch and resistor a 50K ohm resistor would provide 50% output.
selfmedicator462
Well-Known Member
I
like the switch better. These wattages are scaring me a bit. I've been doing the 400/600 so long that 300 seems too low.or have I been over killing it?
selfmedicator462
Well-Known Member
That's what I want. The 600 was a bit much but man did it fatten buds in a hurry!
littlejacob
Well-Known Member
Bonjour
So which cxb did you choose?
If it is the 3500ºk CD it will be 60% @1050mA!
Did you bought it from cutter?...they are cheaper there with cuttandroll code!
CU
So which cxb did you choose?
If it is the 3500ºk CD it will be 60% @1050mA!
Did you bought it from cutter?...they are cheaper there with cuttandroll code!
CU
selfmedicator462
Well-Known Member
I just got an email from Jerry. I forgot to tell him the voltage. 36v right?
littlejacob
Well-Known Member
Bonjour
I really like Jerry but cxb3590 are cheaper in www.cutter.au with CUTTANDROLL code you should compare...!
CU
I really like Jerry but cxb3590 are cheaper in www.cutter.au with CUTTANDROLL code you should compare...!
CU
selfmedicator462
Well-Known Member
$40-50 at kingbrite. Cutter doesn't list the drivers I need.
littlejacob
Well-Known Member
Bonjour
Not atm...but maybe they will...but I would do the same...take everything from Jerry...and ask him if he can do the same price than cutter on your cxb...it could work!...
Because it is 44$ and free shipping for cob in cutter...idk!
CU
Not atm...but maybe they will...but I would do the same...take everything from Jerry...and ask him if he can do the same price than cutter on your cxb...it could work!...
Because it is 44$ and free shipping for cob in cutter...idk!
CU
selfmedicator462
Well-Known Member
got just about everything ordered. What wattage of resister do you recommend? Ill be running 2 switches so i know I need 50k
selfmedicator462
Well-Known Member
I got everything ordered except for resistors which I can get locally. Woke up to phone calls from credit card company saying I had fraudulent charges. Ugh! The froze payments so I had to reorder. Don't get me wrong I'm glad they are watching so I don't get robbed but damn it makes shit difficult.
littlejacob
Well-Known Member
Bonjour
Could you please tell us where those fraudulent charges come from!??
Which site?
CU
dandyrandy
Well-Known Member
I haven't had time to check on riu for a day or two and I see many new led builds! They have seen the light!. You will like led. Especially for personal grows.
Rahz
Well-Known Member
Sometimes the CC company will freeze a card when making unusual purchases, like large $ to an overseas company. The first couple times I tried to order from Kingbrite my CC company rejected the charges.
littlejacob
Well-Known Member
Bonjour
It is for amount over 500 $...it is the same here but the bank asked me (well a computer I guess) just before the payment...they send me a sms and asked for confirmation...this way no problem of blocked card or reorder...very convenient!
CU
It is for amount over 500 $...it is the same here but the bank asked me (well a computer I guess) just before the payment...they send me a sms and asked for confirmation...this way no problem of blocked card or reorder...very convenient!
CU