Both the clear and amber versions of WiZ’s ST19 filament bulb emit 350 lumens at full brightness ... won’t need to mess with your router’s dual-band settings. In any event, I managed ...

sent pictures and a description of the old bulb to an antique radio forum, which told him about the origin of the dual filament bulb. The Phelps HYLO, "HIGH-LOW" bulb, patented in 1904 ...

We tested the low-beam performance of single-filament (9003) and dual-filament (H7) bulbs from GE, Hella, Philips, and Sylvania, and PIAA's dual-filament bulb. We also compared their performance ...

That's how Kunkle learned about the origin of this fully functional dual filament bulb. The Phelps HYLO, "HIGH-LOW" bulb, patented in 1904, was designed to save electricity. According to a ...

Smart lighting manufacturer LIFX is set to bolster its Wi-Fi bulb lineup at CES this week, announcing new filament and candle bulbs along with a four-gang smart switch. Also on tap: a major ...

The difference between zero output and, say, 25 Watts, using a single filament bulb, is much greater and will be more noticeable than that of a dual-filament. But, I supposed to save space (and money) ...