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Engineering.com has advised LED lighting from the standpoint of safety, ablaze quality, activity efficiency, and acceptable design, so now let’s booty a attending at the appearance and basal technology of some bartering LED-based lamps. Brightech articles LED lighting systems for homes and baby offices. Several of its articles affection added conveniences such as USB ports and wireless pads that allegation corpuscle phones, tablets and added battery-powered devices. We’ll appraise aloof two of Brightech’s lamps (see Figures 1, 2, and 3), as the others allotment the aforementioned basal technology.
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Figure 1. Two of Brightech’s lamps. (Image address of Brightech.)
Two Brightech lamps that accommodate wireless charging pads and USB ports are the Grace Table Lamp and the Madison Nightstand Lamp. Both accommodate LED bulbs that spiral into an E26 abject (the aforementioned atrium as a accepted beaming ablaze bulb) and accommodate 800 lumens of light—about the aforementioned as a 60W beaming bulb. The LED bulbs, however, absorb beneath than one-sixth of the ability (9.5W) compared to their Edison-created counterparts. While beaming bulbs, which catechumen best of the admission electricity into calefaction rather than light, attempt to bear efficacies of 13 lumens per watt (lm/w), Brightech’s LED lights appear through at a air-conditioned and able 85 lm/w.
These lamps both appear with balmy white bulbs (3000K blush temperature), which accommodate a adequate ambiance but are beneath than ideal for account or assignment lighting. Since the bulbs fit into a accepted socket, they can be replaced if the chump prefers a altered blush temperature or if the ball burns out. The aggregation says that the bulbs should aftermost for 20,000 hours (about 20 years if acclimated for 3 hours per day) and offers a five-year assurance on its products.
Figure 2. Added capacity on the Grace Table Lamp. (Image address of Brightech.)
The Brightech LightPro LED Bulbs in these lamps abide of surface-mount LEDs amidst by an aluminum apartment that’s engineered to enhance convective currents, which helps to blow the calefaction generated by the ascendancy circuitry. The LEDs afford white light; a phosphor blanket tunes the blush temperature to a balmy 3000K. The aggregation additionally offers air-conditioned white lamps that use dejected LEDs with a altered phosphor blanket to accommodate a 6000K blush temperature (better ill-fitted for appointment and assignment lighting), and a few lamps whose blush temperatures can alter application tri-color LEDs.
Figure 3. Added capacity on the Madison Nightstand. (Image address of Brightech.)
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Each lamp comes with USB ports able of carrying 5 Watts at 1 Amp (see Amount 4). That’s abundant to allegation a 3000 mAh array in about three hours. The wireless charging pad delivers the aforementioned bulk of ability application the Qi wireless ability alteration specification. Although wireless charging is hardly beneath able than charging through a cable, for low-power applications like phones and tablets, the ability accident is insignificant.
Figure 4. Wireless charging with Brightech lamps. (Image address of Brightech.)
Wireless charging involves two coils in abutting adjacency that are magnetically coupled. Alternating accepted is beatific to the transmitting coil, which generates a alluring acreage that expands and affairs in admeasurement to the accepted (see Amount 5). As the alluring acreage oscillates, the alluring alteration cuts beyond the affairs in the accepting coil, inducing an alternating accepted in the coil. The accepted is again rectified, regulated, and beatific to a allegation controller, which ensures that the array receives a connected accepted during the aboriginal stages and a connected voltage during the after stages of charging. The allegation ambassador additionally prevents the array from overcharging.
Figure 5. Wireless charging application electromagnetic induction. (Image address of the Wireless Ability Consortium.)
As allotment of the Qi specification, back a accessory is placed on the charging pad, the transmitter senses the commodity by one of two methods: acquainted a change in apparent capacitance or audition a about-face in the transmitting circuit’s beating frequency. Once the commodity is articular as a accountable device, the transmitter (PTx) and receiver (PRx) acquaint to actuate the accessory battery’s accompaniment of allegation and charging requirements. This ensures that the charger will bear the adapted charging levels for the actual aeon of time.
For safety, the pad senses back a adopted commodity is placed abreast the braid during a allegation cycle. If it detects that the adopted commodity is actuality acrimonious by the alluring field, the transmitter will abolish the ability delivery.
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Saving activity is one aspect of sustainability, but abbreviation actual decay is appropriately important. Although some of the articles in Brightech’s archive don’t accommodate dispensable bulbs, the models featured in this commodity do—a audible additional from a sustainability standpoint. In addition, the abject of anniversary lamp is fabricated of absolute copse rather than plastic. I’d like to see all of the company’s ablaze accessories fabricated with bulbs and added apparatus that are acreage replaceable. Hopefully, Brightech’s engineers will acquisition a way to ensure that these articles don’t end up in a landfill at the end of their lives.
Like best new technologies, LED lighting suffered through a few difficult years while engineers struggled to accumulate the ascendancy chip air-conditioned and reliable. It additionally took a while to amount out how to architecture bulbs that afford blush temperatures that are safe, aesthetically pleasing, and adapted for specific applications. Aboriginal adopters saw some duds, but LED technology has assuredly accomplished abundant to become the accepted for about all lighting systems. Now let’s assignment on authoritative them added sustainable.
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