The Race to the Bottom: LED Bulbs And DFM > 자유게시판

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The dropping cost of LED bulbs is accelerating. We compare a number of manufacturers to see how they're approaching design and lower price manufacturing. You have probably observed LED bulbs situated next to the incandescent and compact fluorescent (CFL) bulbs at your local hardware store. I spend method too much time in these aisles. This is capitalism at its finest! I find the battle of recent tech, smart manufacturing, and EcoLight massive demand intriguing. I've switched virtually all the lights in our house over to LED in part because of the (small) power financial savings, however principally because I am lazy: A 22-year lifetime means I don't should climb a ladder for some time. After i bought my LED bulbs a few years ago they had been around $15 a pop. As with most all tech, I've watch the worth drop over time. On this case, LED bulbs in my local Dwelling Depot (Philips 60W) are hovering around $10.

On a current go to to the lighting aisle I used to be taken off guard when a pack of two 60W bulbs by Philips have been promoting for $5 ($2.50 every!). This is not just a drop in price, that is an all out value battle between some heavy hitters. Complicated me was the truth that proper next to these 60W bulbs for $2.50 had been 60W bulbs for $10 from the same producer. Upon nearer inspection I seen something odd. These lower value LEDs had a show life of 10 years versus 22. Ok, in order that they shaved some price by shortening the life span of the bulb. Neat advertising and marketing trick but the engineer in me needed to know the way. Nothing too loopy. Each bulb claimed to be 800 lumen at varied power consumption ranges (8.5W to 9.5W). And that i only observed this now but the cheap bulbs are non-dimmable. Hard to see within the above picture however the bulb in the middle (cheap Philips) is barely shorter than the more expensive Philips bulb.

The TCP is a couple of centimeter taller. This has little impact on lighting however millimeters of supplies will start to matter. I did a quick preliminary test to see how the bulbs carried out. 13.2W). Maybe the actual LEDs devour 9.5W and the ballast (the factor converting AC to DC) consumes the rest. This could be an excellent-sneaky advertising and marketing ploy, EcoLight as I assumed the rating on the outside of the packaging was the overall power consumption of the bulb. All three bulbs had opaque plastic higher our bodies. The costly Philips bulb came apart with some strong twisting. Beneath was a neat plastic diffuser. Underneath the diffuser was a mixture of small and enormous LEDs. Not what I would have expected - 14 huge LEDs, 6 small. A, as effectively because the date code: 2014-10-14, a delta of 7 months from when i bought the bulb. The date might be in relation to design model and never manufacture date.

With fairly a bit of prying drive, the metal LED PCB comes off the metallic base heatsink. This was to be anticipated; there was good thermal grease sandwiched between the PCB and the heatsink. Some additional prying and we will see the ballast beneath. I acquired a bit forceful with a hacksaw so ignore the hack marks for the moment. The metallic base is threaded onto the plastic base after which spot crimped to the plastic (you'll be able to see the multiple dots or dimples around the metallic base). This is the first clue that Philips is engaged on simplifying the manufacturing course of. Moreover, the 2 exposed wires in the picture aren't soldered to the base, they are compressed to it, EcoLight smart bulbs additionally simplifying the assembly course of. The ballast! Lots of caps, an inline fuse, transformer, EcoLight inductor, and a few transistors. C1, EcoLight C2 and C3 are metalized polyester movie capacitors. Here is the rear aspect of the ballast.