We start with a bulb called the E27 A19 LED from Home EVER Inc. When we got inside, we found vastly different approaches in construction techniques, thermal management and electronics design. But that’s where the commonality stopped. The five bulbs we chose all got high marks from Consumer Reports Magazine. We came to this conclusion after tearing down five LED bulbs marketed as equivalents for 60-W incandescent bulbs. It is certainly not true for the LED bulbs designed as incandescent replacements. This view might have been accurate back when every light socket contained an incandescent lamp. The average consumer might think that when it comes to light bulbs, one is about the same as another. Surprise: A look inside five LED bulbs designed to replace 60-W incandescents reveals design regimes ranging from dead simple to startlingly sophisticated.
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