dwolson2
New member
I ordered mine on the 7th, but haven't gotten a shipping notice yet. I did spring for the better shipping so LMK when you get them and we can compare which is the best way to go:rollface:
Meanwell LDD driver: for those who want to dim to 0 using Arduino
- Thread starter pwreef
- Start date
I ordered mine on the 7th, but haven't gotten a shipping notice yet. I did spring for the better shipping so LMK when you get them and we can compare which is the best way to go:rollface:
I will post back when I get them....
Whitebeam
New member
I'm currently thinking of how to lay out my multi-chip LEDs to be driven from my LDD1000Hs. I would like to put the chips down in blocks and common the grounds returning to the drivers. Is this possible with the LDDs, or are they actually driving + and - volts on their outputs?
Peter
Peter
Was hoping someone could just make sure that I am ordering the correct power supply for my setup. I will have 2 ldd-1000h running 12 XT-E royal blues for each driver. 1 ldd-1000h running 12 XP-G warm whites. 1 ldd-600h running 4 Plillips reds, 4 XP-E greens and 8 Ultra violets.
3-ldd-1000H
1-ldd-600H
24x 3.4 volts= 81.6 volts or 40.8 volts per driver
12x 3.15 volts= 18.9 volts
4x 2.4 volts= 9.6 volts
4x 3.0 volts= 12 volts
8x 3.5 volts= 28 volts
Would the Meanwell 48.0V @ 7.30A 350 Watts power supply work?
Thanks in advanced!
3-ldd-1000H
1-ldd-600H
24x 3.4 volts= 81.6 volts or 40.8 volts per driver
12x 3.15 volts= 18.9 volts
4x 2.4 volts= 9.6 volts
4x 3.0 volts= 12 volts
8x 3.5 volts= 28 volts
Would the Meanwell 48.0V @ 7.30A 350 Watts power supply work?
Thanks in advanced!
Last edited:
Whitebeam
New member
I'm not asking to put Vout- to Vin-, I'm asking if I can common more than one Vout-.
Peter
rrasco
Active member
I don't think so.
Whitebeam
New member
It would allow me to mount 4 x 10W multichip's a bit closer together to help avoid the disco on the sandbed, that's all.
Peter
Looky what I found- It's a X-Ray image of an LDD-1000H. Looks fairly simple, but no component values can be seen. Considering that they only cost $5 each, I think some " exploratory surgery" may be in order. http://www.aqualogo.ru/phpbb2/index.php?act=Attach&type=post&id=112689
Sort of, well maybe. LOL. I don't like "black mystery boxes", So I'm just curious to see what's inside it. I doubt that I could create a copy that would be cheaper than the original though. MeanWell can afford to by the individual components by the millions at volume discount, while I'd end up blowing half their $5 selling price just on the PCB alone.LOL
dwolson2
New member
lol, it would be cool though to try to make a custom driver that had multiple channels like that(forgive me if its already a reality)
That's essentially what we've done in this thread. We're using multiple LDD's on one PCB powered by a single power supply. It's hard to make it any more simple than that. We used to have to resort to using multiple Onsemi CAT4101's to get more "channels" but they were limited to 25 volts, so driving 6 -7 leds was all they could do. These LDD's cost about the same as a CAT4101 (including support components) but can drive twice as many leds. Talk about being cost effective. The only thing that I wish MeanWell could incorporate into the LDD product line would be higher current operation with a manual current adjustment. Until they do, ( I give it 6 months, LOL) I'll continue using LM3409 based drivers for high current applications.
rrasco
Active member
I still prefer the CAT4101 from a price perspective. It's only one resistor and two caps per driver. I normally buy from Mouser, so my LDDs are a little more expensive, but I get my orders next day via UPS Ground so I prefer them. The voltage is the limiting factor though.
I used two LDDs in a T5 retrofit because I didn't want to build a CAT board. These are seeming more attractive though. If they can stay stocked.
megadeth72
New member
This one would give someone an idea how they are doing it, I use a couple of these, they are full output unless the pwm is hooked up or grounded, these are not rated for a very high load
it can do 35v at 1500ma I'm using it on a 10w actinic over my freshwater tank, makes those neon tetra color up
http://www.sure-electronics.net/download/LE-LL14113_Schematic.pdf
http://www.sure-electronics.net/download/LE-LL11114_Ver1.0_EN.pdf
it can do 35v at 1500ma I'm using it on a 10w actinic over my freshwater tank, makes those neon tetra color up
http://www.sure-electronics.net/download/LE-LL14113_Schematic.pdf
http://www.sure-electronics.net/download/LE-LL11114_Ver1.0_EN.pdf
I still love my CAT's. I've had 15 of them driving 90 XR-E's on my tank for the last three years. But they are "yesterday's tech" and time has marched on. The LDD will most likely replace the CATs in any my future LOW current led builds and I'll still reach for an LM3409 for the HIGH current stuff.
Inside LDD-H driver is essentially this: http://www.kosmodrom.com.ua/pdf/MBI6661GSD.pdf with some capacitors, induction coil and resistors. There is a Chinese knockoff on ebay. Search for MBI6651. Its equivalent to LDD-L.
Skinnysloth
New member
Thanks for the heads up. I may have to purchase some of these as the Meanwell LDDs aren't as readily available.
I looked at the FleaBay offerings. Buyer Beware- those knock-offs don't offer anywhere near the same performance as the LDD. The best one I could find was only a 10 watt model. The ldd-1000h is rated to around 50 watts, give or take. I'd spend the money on the LDD's not the more expensive knock-offs.
