banthonyb71
Active member
but I need enough for 3 Lumia's. what is TRC?
diy LED Lumina 5.2 Purchase help.
- Thread starter banthonyb71
- Start date
but I need enough for 3 Lumia's. what is TRC?
jedimasterben
LED world domination!
LDD are cheap, $3.70-5 from Allied electronics. TRC is a website, http://www.trcelectronics.com/
Idefixes
New member
If you go with 3 lumia in // (15 driver) 36V/9A (320W) is enough. Take a look a look as Jedimasterben says here ( http://www.trcelectronics.com/36-volt-power-supplies-chassis-1.shtml ). One indciation about quality could be waranty time length....
Marc
banthonyb71
Active member
So only thing I get from group buy is lumia chip? Everything else I get cheaper and/or better elsewhere?
jedimasterben
LED world domination!
Depends on shipping charges, minimum orders, etc, but for the most part, yes.
banthonyb71
Active member
dang u guys r quick with the responses today. must be cus of the date... didnt we just have a Friday the 13th a few weeks ago?
About 4 weeks ago, yeah 
I have a couple of these and they have been great:
http://www.trcelectronics.com/View/Mean-Well/SE-350-36.shtml
Tim
I have a couple of these and they have been great:
http://www.trcelectronics.com/View/Mean-Well/SE-350-36.shtml
Tim
36v isn't enough to run three in series only two and that's pushing it "3 Hyper Violet and 2 CREE XT-E Royal Blue (Actinic channel) (18v @ 700mA)" times this by three lumias = 54v "15LEDs" + one LDD "3v" = 57v on a single string if running at 700mA.
I haven't seen anyone attempt this with the Lumias. All builds i've seen are two Lumias on single string not three and using 48v because 36 v PS is ok for the 10 LEDs but don't forget the LDD also needs 3v which makes 39v for two lumia on the largest volt string.
again I recommend using two 48v PSs for three Lumias, it keeps things simpler or find a very good expensive PS that can be run over volted "57v".
this is what every Lumia build I have seen do, including mine. Even ones using a dozen Lumias. None that I know of have done three in series. There may be a reason. It's not that it cant be done, its because it complicates things
I haven't seen anyone attempt this with the Lumias. All builds i've seen are two Lumias on single string not three and using 48v because 36 v PS is ok for the 10 LEDs but don't forget the LDD also needs 3v which makes 39v for two lumia on the largest volt string.
again I recommend using two 48v PSs for three Lumias, it keeps things simpler or find a very good expensive PS that can be run over volted "57v".
this is what every Lumia build I have seen do, including mine. Even ones using a dozen Lumias. None that I know of have done three in series. There may be a reason. It's not that it cant be done, its because it complicates things
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Aqualund
New member
Yes there's plenty of ways to hook up 3 Lumia's to one power supply, but running 3 in series off of one PSU at 48VDC is what we were saying is not possible.
Idefixes
New member
Yes of course, you are plenty right but at begining of this topic guy wanted to connect them in parallel, and probably ignore we could do that in serie for max to unit per LDD. It's the way i will use my conversion in multichip from lumia 5.2.
Marc
Aqualund
New member
I don't see where it says parallel at the beginning and of course as I said there are many ways to do this.
Just keep it simple though and do it the way everyone else that has built using the lumias has done it"and is recommended by the people who sell then and is in their example builds, which is 2 in a string". If you now of a thred that has used the Lumias in parallel please link. Im sure it works but no one I know of has used Lumias this way.
Recommended way by site works and is probably easiest way for a nooby to understand. No need to get fancy unless you really understand this stuff.
2 lumias, 5 ldds, 1 PS and done. More Lumias just double
Just keep it simple though and do it the way everyone else that has built using the lumias has done it"and is recommended by the people who sell then and is in their example builds, which is 2 in a string". If you now of a thred that has used the Lumias in parallel please link. Im sure it works but no one I know of has used Lumias this way.
Recommended way by site works and is probably easiest way for a nooby to understand. No need to get fancy unless you really understand this stuff.
2 lumias, 5 ldds, 1 PS and done. More Lumias just double
Aqualund
New member
I think they are talking about the ldd boards being powered in parallel, and using 3 of the boards...to power 3 lumias separately. This isn't all that tricky or fancy, and will do just fine.
But if we're talking about 1 ldd board and 3 lumias in parallel well then yeah I wouldnt suggest that.
But if we're talking about 1 ldd board and 3 lumias in parallel well then yeah I wouldnt suggest that.
banthonyb71
Active member
hmm. I fell like there is more of a debate going on thn a solid agreed one way??
Ok. My plan is to start with 2 then add a 3rd.
So what do I use 1 power supply or 2?
series or parallel?
are we still using a total of 10 drivers for 3 lumias and 5 for 1?
who am I listening too? I have no idea what advice I'm suppose to follow.
No idea, how I'm suppose to wire these or for that matter, the benefit of wiring that way. I've wired Subwoofers in parallel and series before, never LED's.
I just planned on making sure I got what was needed and learning during the build what voltage, watts, etc. Otherwise, I have not much clue what any of these numbers mean. the only numbers I understand as of now..are part numbers.
Im just want to know exaclty what parts to get.
Ok. My plan is to start with 2 then add a 3rd.
So what do I use 1 power supply or 2?
series or parallel?
are we still using a total of 10 drivers for 3 lumias and 5 for 1?
who am I listening too? I have no idea what advice I'm suppose to follow.
No idea, how I'm suppose to wire these or for that matter, the benefit of wiring that way. I've wired Subwoofers in parallel and series before, never LED's.
I just planned on making sure I got what was needed and learning during the build what voltage, watts, etc. Otherwise, I have not much clue what any of these numbers mean. the only numbers I understand as of now..are part numbers.
banthonyb71
Active member
About 4 weeks ago, yeah
I have a couple of these and they have been great:
http://www.trcelectronics.com/View/Mean-Well/SE-350-36.shtml
Tim
No when I look at a PS like that, it doesnt look much diffrent than the pS on LEDGB site. is it not made by the same chinese people? or is it actually a different power supply?
Idefixes
New member
Meanwell are build with tighter spécification as lambda SMPS. As i said you above a good indication is the warenty period (some have 5 year warenty).
To sump up you have 2 choices your 3 lumia build :
1) 2 five LDD board and 10 LDD (4xLDD1000 + 6xLDD700) => 2 lumia in serie and on one board and third lumia on the second board. This configuration will need a 48V PSU (320-350W) as the 2 lumia in serie will have 36V Vf . To these 36V you have to add 3 more for LDD run.
2) 3 five LDD board and 15 LDD all in parallel on on 350-400W SMPS. In this configuration you don't need neither 36 or 48V but 24V will be plenty (18V led Vf + 3V LDD = 21V) You need per Lumia 700x+1000x1 mA=4,1A => 3x4,1A=12,3A.
Yet you can discuss on advantage/disadvante of each solution. The second maybe could be better as LLD have not to deal with big voltage drop. But solution one let you add not just one but 2 more LDD if you chose the rigth PSU (450-500W° vith 10 LDD and may provid better coverage. If outpower is too high dealing tham down will ensure longer life time (less heat).
Marc
banthonyb71
Active member
i think I like option 2 and the idea of dialing them down.
So power supply 21 volts. but still has to be above 250 watts?
