Examine an LED bulb and you are likely to find the LEDs on board are phosphor-converted white LEDs (PC-LEDs). These are created either from blue- or near-ultraviolet-emitting chips emitting light at about 450 nm that are coated with a yellow phosphor. The phosphor down-converts the light output into lower visible light frequencies. PC-LEDs that operate […]
Another myth busted: You needn’t worry about ultraviolet light coming from ordinary LED bulbs. We recently checked a batch of LED bulbs for the amount of blue light they gave off. This effort came in response to claims from some in the alternative medicine crowd that LED bulbs gave off inordinate amounts of unhealthy blue […]
Rutronik Inc. has expanded its franchise agreement in North America with Osram Opto Semiconductors, a worldwide leader in optoelectronics for illumination, visualization, and sensor technologies. The agreement is effective October 1, 2018. Osram inventory is in stock in Rutronik’s Texas warehouse facility, and also available via the e-commerce platform, Rutronik24. Osram provides a wide range of LEDs in low-power, […]
How do you rig up an LED bulb so it works on the internet of things? That’s the question we try to answer in this teardown of a smart LED bulb and gateway from Osram Sylvania. In a nutshell, it is a tale of two different technologies with the LED bulb power functions built […]
by Lee Teschler, Executive Editor Only consumers who are deeply committed to managing a lightbulb on their smart phone are likely to persevere through the lengthy setup we…
We dissected five LED light bulbs marketed as equivalents to 60-W incandescents. In this short video we look at an LED bulb from Osram Sylvania, examining its electronics and mechanical design, despite the challenges posed by rubberized material that potted the ac-dc converter board.