The Race to the Underside: LED Bulbs And DFM
Francisco Morrow edited this page 5 days ago


The dropping value of LED bulbs is accelerating. We examine a few manufacturers to see how they are approaching design and decrease value manufacturing. You've got most likely seen LED bulbs situated next to the incandescent and compact fluorescent (CFL) bulbs at your native hardware store. I spend method an excessive amount of time in these aisles. That is capitalism at its most interesting! I find the battle of latest tech, good manufacturing, EcoLight and large demand EcoLight bulbs intriguing. I've switched virtually all the lights in our house over to LED partly due to the (small) power financial savings, but mostly because I am lazy: A 22-12 months lifetime means I don't have to climb a ladder for some time. When i bought my long-life LED bulbs a number of years in the past they had been round $15 a pop. As with most all tech, I've watch the worth drop over time. In this case, LED bulbs in my local Dwelling Depot (Philips 60W) are hovering around $10.


On a latest go to to the lighting aisle I was taken off guard when a pack of two 60W bulbs by Philips were promoting for long-life LED $5 ($2.50 every!). This isn't just a drop in price, that is an all out price warfare between some heavy hitters. Complicated me was the fact that proper next to these 60W bulbs for long-life LED $2.50 were 60W bulbs for $10 from the identical producer. Upon nearer inspection I noticed something odd. These decrease price LEDs had a show life of 10 years as opposed to 22. Ok, so that they shaved some cost by shortening the life span of the bulb. Neat marketing trick however the engineer in me wanted to understand how. Nothing too crazy. Each bulb claimed to be 800 lumen at various power consumption ranges (8.5W to 9.5W). And i only noticed this now but a budget bulbs are non-dimmable. Hard to see within the above image but the bulb in the center (cheap Philips) is slightly shorter than the dearer Philips bulb.


The TCP is a few centimeter taller. This has little impact on lighting however millimeters of supplies will begin to matter. I did a quick preliminary take a look at to see how the bulbs carried out. 13.2W). Maybe the actual LEDs consume 9.5W and the ballast (the thing converting AC to DC) consumes the rest. This would be an excellent-sneaky advertising ploy, as I assumed the score on the outside of the packaging was the overall power consumption of the bulb. All three bulbs had opaque plastic higher bodies. The costly Philips bulb got here apart with some strong twisting. Beneath was a neat plastic diffuser. Below the diffuser was a mixture of small and huge LEDs. Not what I might have expected - 14 massive LEDs, 6 small. A, as properly as the date code: 2014-10-14, a delta of 7 months from once i bought the bulb. The date might be in relation to design model and not manufacture date.


With quite a little bit of prying pressure, long-life LED the metallic LED PCB comes off the metallic base heatsink. This was to be expected