Sunday, October 17, 2010

Retrofit a small desk lamp with LED

Among the LED lamp kit I had around, there was a 3W Cree Xlamp 7090 with a small power supply.
For a while I kept it mounted it in a cable clipper, glued under a shelf.
Then, after some renovation in the Athena's room, a small desk lamp caught my attention and I decided to retrofit it with  such kit.
I removed the original lamp socket and rewired the base of the lamp.
Like the electronic  lab lamp I did, I decided to put in the lamp top reflector only the LED with the heat-sink.
The power supply, a very small one, is in the base.
Here some pictures and notes :
This is the small desk lamp retrofitted with the Cree 3Watt LED.
This is the kit used to retrofit the small desk lamp.
Originally I placed the diffuser/lens, but for this application I removed it since the light is better reflected by the lamp diffuser.
The lamp base opened.
The weight is insulated by a plastic bag.
The base material is plastic, so already insulated.
Here the base emptied.
And here the base retrofitted.
The power supply (on the right)  and the new small cable carrying the LED power supply entering in the shaft (on the left).
 Here the LED glued on the heat-sink and  attached to the original lamp support.
The lamp on.  A very nice and strong light.
More than enough to replace the original 40W incandescent bulb.


  1. Great post. I was checking continuously this blog and I am impressed! Extremely helpful info specially the last part :) I care for such info much. I was looking for this particular information for a long time. Thank you and best of luck.
    LED light bars