In a way, yes it does. A constant current driver uses a current sensor, and as the output voltage ramps up above the turn on voltage of the COB and the current increases, the sensor sees that and as the target current is reached, it stops increasing the output voltage.
It really depends on the power supply - most drivers are constant current - they self adjust output voltage as needed to maintain the current setting. Constant voltage supplies OTOH, simply put out a stable voltage, and the COB will draw as much current as is typical for that voltage (within a normal bell curve variation for the manufacturing process), provided the supply can deliver the current. As the COB heats up, it will pull more current until the temp stabilizes.
Thanx dude. Been trying to get somebody to explain how it actually works. I have an ascocciates in eet from 99 lol. Got pinched right after i graduated and never worked in the field and when the guy from cobkits gave his explanation it sounded familiar im gonna have to dust off the text books i know ive learned this once somewhere long ago haha. Happy to be interested again.
Does anyone know where I can find any of the 2100 milliamp version of this driver the hlg 240
If u ask mike through rapidled he can get u whatever driver u want.. Mabe even cobby here can get u one... Hard to find that one.. Ive had luck through future electronics as well..
Rapid is out till july. I found some on a site called trc? Idk havent ordered them yet. Yeah the site i found them on is called trc electronics. Rapid said they would take the 1400ma drivers back and credit what i spent on them towards another kit except this time with the 2100ma. So if rapid is right on there math with the 2100ma drivers ill be getting 460w at the cobs . Have to deal with 460watts till july but thats more than a hundred watts better than what i have now. And in july when i add 3 more veros with the third 2100ma driver ill be getting 690w at the cobs. If i wanna run them wide open. Cant wait im getting so close and im getting impatient. Lol. Cheers.
I know the feeling bud.. Hard once all your equipment is in and nothing is growing under them.. You will be pleasantly surprised what 460w of cobs will do.. Dont try to compare them to hid watts..Rapid is out till july. I found some on a site called trc? Idk havent ordered them yet. Yeah the site i found them on is called trc electronics. Rapid said they would take the 1400ma drivers back and credit what i spent on them towards another kit except this time with the 2100ma. So if rapid is right on there math with the 2100ma drivers ill be getting 460w at the cobs . Have to deal with 460watts till july but thats more than a hundred watts better than what i have now. And in july when i add 3 more veros with the third 2100ma driver ill be getting 690w at the cobs. If i wanna run them wide open. Cant wait im getting so close and im getting impatient. Lol. Cheers.
Yeah looked at mouser but didn't have the exact # I'm gonna try them again. Thanx. And yeah it's hard not to compare to hid. Still want the third kit tho. I feel like I'd get better coverage in this 4x4 than what I get with the 20"x6" heatsinks if I had 3 of them. And hey thanx again
No prob.. 3 kits will kill it in there..
Cobkits has 17 in stock as of 1 minute ago.Rapid is out till july. I found some on a site called trc? Idk havent ordered them yet. Yeah the site i found them on is called trc electronics. Rapid said they would take the 1400ma drivers back and credit what i spent on them towards another kit except this time with the 2100ma. So if rapid is right on there math with the 2100ma drivers ill be getting 460w at the cobs . Have to deal with 460watts till july but thats more than a hundred watts better than what i have now. And in july when i add 3 more veros with the third 2100ma driver ill be getting 690w at the cobs. If i wanna run them wide open. Cant wait im getting so close and im getting impatient. Lol. Cheers.
sux i didnt get the notification till after i ordered. I dont understand i tried to buy the rollitup app but the developer kept declining the transaction. Wth? So did i pay too much?
Not at all. Cool to support fellow members but do what ya gotta do! Im sure there will be more builds and more components you need. I know i have at least a couple more builds to do in the near future! Sorry i couldnt be of more help with the 1's and 0's of the driver. I have many many hours of research into this stuff and a good idea of component matching etc. but dont know alot about inner workings of things. Im kicking myself for the drivers i went with too. Settled for the A version, if i went with the B version i couldve run thermistors off the dimming leads so that in the event of over heating, the units would dim themselves as temperatures rose. Not too worried but wouldve been a simple upgrade with a great benefit.
That actually sounds like a good idea!! And yeah i have to get the old txt books out and relearn drivers. And it does suck screwin up like that. On a positive note a good friend flipped me a couple northern lights seeds today. And some nutes. Ill have to update this thread with picks when ive finished the build. Im modifying it a little bit. Adding fans the only thing i don't like about the kits is that they come with just one fan and if it goes out and im not there i could lose 75$ worth of cobs. And hey you guys did help i was wrong thought i had way more light than i did. At least i found a problem i didnt even know i was gonna have. Now i can fix it b4 hand. I dont think 300watts wouldve been what i wanted. Thank all you guys!!
you know something? I did look at cutter but the website is a little clunky and I didn't have the exact part number at that moment. But I do have two more builds planned and I will definitely be hitting cutter up for some parts in the future thanks anyways mark!!! Cheers
Got thise 2100ma drivers today. Woohoo. Sending rapid the 1400s back and getting the third kit!!!! Cant get it till sometime next month but i got more than enough light to pop a seed and get going!!!!
Hey, what size area did you use this diy kit in ?
2.5x2.5x5. I have 2 of them. Check out my grow journal bodhi seeds lemon lotus
Hey, thinking of getting these lights for a 4x4 area. How did you like them ?