Search results

36.5V at 1.4A gives 51.1W

thats the Mau5 style (50x50) 1.8x1.8 feet size...are the cobs too closer between each other(25 cm- 0.82 feet) ot that's fine?

hi! that's exatly was i had on mind when i choose a 5 cobs lamp but i can't understand quite nothing because of my bad english Furthermore somewere i read that cobs have a sort of of lighting camp range...for example 30cm of light at 1 meter from the ground...i would not to put the cobs too...

Hi to everybody. Do you have any suggestion about the COB s distribuition? I have 5 COBs without lens and reflecor (clu 048 1212) run at 25-50w in a 2.7x2.7tent..i would to avoid hotspot but i do not know distributiin and spread from those cobs. Would also make the arctic64 plus less noiser, i...

i'm a stupid guy! actualy pot is right, i just linked you the wrong! pot i bought is that http://www.digikey.com/product-detail/en/tt-electronics-bi/P170S-FC15BR100K/987-1317-ND/2408894 and i just took a picture of my stuff, pot+resistor

WTF, i need to buy another one!! So resistor is fine but potentiometer not( i was sure to have check properly before buy it and that was 100k :( JavaCo while you was sending me your picture i was making that.... comparing it to your I would that mine was wrong!

now i take trying to understand your clerar instuction..sure it easy but not so much for me :( resistor i buy seems wrong, cheking the colours code...isn't it? https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-resistor-color-code-4-band

Hi to all, sorry for my englisj. I' m in a trouble with my potentiometer on a HLG-240H-C1400B. I have read all the 3d and i took lots of useful informations but I'm still confused.. Because I need to drive 5 COBs( CLU 048 1212) wire in series at 1.4A, i need of 36.7V for each cob(183.5V) i need...

?

Thax! I m reading lots of informatioms, a reallynusefull 3d.. I got it! You re right..it seems not hard to do..great idea!! I found a 100k pot with an integrate switch...if I m right that should has a fourth connector for switch function, isn t it? Or maybe switch is built on and i have only to...

Really kindly from you, i ll try to do that...not sure to have understand but you have tried your best so many many thanx...i must to find an easy step by step tutorial.

Thanx for your help, unfortuantely my engkish is not so good. Arebyou sayng me that should use switch plus a potentiometer so if i need i could have some extea power that with only potentiometer i could ot get? Isn t it? Is it difficoult to do? That should bereally important for my diy lamp...

Then i ve just find this 3d and I'm a little confuse...i must I add a resistor to have a 100% outpunt current? What could happen dimming the driver below 10%?

Thank you again! Will it difficult wire the pot to the driver? There are 4 wire out from the driver: + and - for the COBs and other two wire for the pot...i have only to sold those two wires (dim+ and dim-)to the potentiometer or there is a particular scheme i must to follow? I'm really...

Hi, thanx you both. Could i use any 100k potentiometer? For example which of the following, if any? Best regards(topcat thanx for your suggest but m looking for an european seller)...

Yes, i alread known that...as a matter of fact I m unsure about whixh driver adopt..

Sorry but you re wrong. Probably 50°C could be a realistic cob temperature mounting on a cpu heatsink cooler.You could have 34,6v only if you run cob at 700ma ( 25°C) or 900ma(50 °C)....at 1.4A you would get36,7V at 25°C and 36,1 v at 50°c...are you a grow light manufacter? isn t it? Refer to...

Geyapex am I wrong?

Local? Is it from europe?

As cobkit said some post breore yours actual 1212 voltage is 36.7v not 34.6....183.5V wiring in series and 257W that's my problem!!