I have to say that this is a really good light. A nice warm white from a Cree chip at good intensity.
The current regulation is done with two dedicated 350mA chips that basically act as fixed current limiters. The voltage from the PSU is so close to the actual LEDs forward voltage that they will not be dissipating too much waste heat. They do have integrated thermal protection though.
The PCB the LED is mounted on is ordinary fibreglass laminate but has a solid copper layer on the back with a lot of plated through holes to help transfer the heat through to the housing.
The PCB is clamped in place by the white reflector and an outer ring then snaps into place on the reflector to hold a central lens in position.
The datasheet for the chip can be found here:-
http://www.micro-bridge.com/data/semi-micro/SM7135.pdf
The current regulation is done with two dedicated 350mA chips that basically act as fixed current limiters. The voltage from the PSU is so close to the actual LEDs forward voltage that they will not be dissipating too much waste heat. They do have integrated thermal protection though.
The PCB the LED is mounted on is ordinary fibreglass laminate but has a solid copper layer on the back with a lot of plated through holes to help transfer the heat through to the housing.
The PCB is clamped in place by the white reflector and an outer ring then snaps into place on the reflector to hold a central lens in position.
The datasheet for the chip can be found here:-
http://www.micro-bridge.com/data/semi-micro/SM7135.pdf
We have a couple of these in our motorhome- I've changed the connectors and added DC/DC convertors to drop the 12V to 6V, which is enough to drive them. (Ours are the later models- which have 7V supplies.)
I have had a similar lamp with a round heavy base. I was sad to find out lately that it was not working anymore – now that I found this video, I realized that the cord in the power unit was detachable, and just was not properly in 😀 great 🙂
I've got the same lamp, is there anyway to change the lamp when it's dead please?
25 comments? That's not right.
What is the exact name and brand of this monocular device that he kept looking inside the lamb with? It seems pretty cool. I would like to buy one.
mine starter flickering after 1 year of use, and I cannot replace the bulb
The wonderful every day.
I'm wondering how hard it would be to modify this to put a slightly higher powered led in there… though I guess it might be a recipe for disaster as well… could be fun either way I suppose.
I have 2 of these, a clip on and a desk version. Great lights, but both switches have gone bad.
I put a pair of 4 pin XLRs on one of these yesterday. I clip the light to the edge of my desk for electronics work, and power comes from behind the desk, meaning that I had to either leave the lamp sitting on the desk or fish the power cable in and out every time I wanted to use it. Now I just have an XLR4F sitting on the desk on the end of the cable power cable and I can set up the lamp much more conveniently 🙂
We sell so many of these buggers in their many different forms, rarely get them returned, it only one in so many of the power supplies which fails which leads to the LED to start flickering.
Also the modullarity is logical the more stuff we can use the same stuff for the cheaper we can get it. I only wish they would fix the buzzing on the dimmable LED bulbs, some have it, some slightly and some really bad. That said the LED range seems to get renewed every year or 2 years.
It is decent fun to pull apart ikea stuff for a living to find out what and why it broke 🙂
I have one of the first-gen of these, they used a CC supply and a normal barrel-type connector, male at supply
These IKEA lamps tend to flicker, especially the very big ones with the footswitch. The reason is actually the switch: Those switches are rated mains, and not made for such low voltages and currents, thus not making perfect contact like that. Kinda annoying on such a good lamp, but easily fixable by replacing the switch.
Mine has the absolute worst switch on it. I got it for near free somewhere (for obvious reasons) but takes a good firm push to get the switch to turn on and stay on.
I've been trying to think of a clever secondary use for this thing, but all i've got it doing right now is what it was made to do… clip to my desk :3
My powersupply of the same light says 4v 0.75ma