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Last Updated: March 10, 2013

Inside E27 5 Watts Led

I know many of you wondering what's inside a household led lighting such as this one shown on the photo. A 5 watts led light with E27 type socket, same as those CCFL energy saving lamp. They are commonly been found nationwide on hardware store, supermarket and electronic supplies at an affordable price. Being an enthusiast and a DIY'er, i got curious again what was inside this kind of household lighting. I recently bought one for another experimentation and wanted to take a peek inside.

By twisting the diffuser, at last the leds came out and i wasn't surprised at all. 5 pieces of 1 watt led was used to bring out the 5 watts specification of this led lighting. They were soldered on an aluminum piece of PCB, to where they will act as the minimum heatsink, and the violet (purple) fins as the main thermal support for the assembly. Getting deeper onto it, i desoldered the board to the main heatsink and

Here the photo on the left shows its component and at an affordable price with this kind of assembly you cannot get per piece of this and assemble it on your own at that price..

And now for the experiment, i will try to fire one of the 1 watt led and connect it to my UNIVERSAL LED DRIVER. I can only lit up one led on this 5 watts led 5 x 1 watt in series for i do not have a led current driver that can support 5 in series up to this moment.

and lets light her up.
there. now let us add some spice..we will put different collimating lens and see the beam shot of a  with no lens, a 30 degree lens , a 45 degree, and a wide lens to see the effect.

The beam shot of the led with no lens is shown at the right, as usual a led with no lens or reflector will be short on distance, it will just spread like this.

now let us put the 45 degree lens like this.
45 degree collimating lens beamshot
A small 45 degree collimating lens for high power led to focus the beam.
The beamshot for the wide moonstone collimating lens.

For the BIG 30 degree spot collimating lens, as seen on my previous experiments about leds on this site.

The beam shot was obviously focused on the center and by comparing the three lens that i have, the 30 degree have the most beam on center and may take up more distance to cover.