An alternate way of driving LEDs

The LEDs are designed to be driven by a DC current, and LED systems are built accordingly. However, with the correct design at the Device or circuit level, it is also possible to drive certain LEDs with an alternating current.
One obvious advantage of this approach is the elimination of the otherwise essential AC-DC converter, which converts line (AC) voltage down to low (DC) voltage. (Note that LED replacement lamps, although plugged directly into an AC light socket, usually Contain converter circuitry within the lamp so that the LEDs themselves are driven by a DC current.
AC-driven LEDs have been available for more than a year, and lighting manufacturers are now starting to take advantage. Nexxus Lighting recently introduced what it claims is the industry's first LED floodlight for general illumination that operates directly from line voltage (ie 120V AC) The SAVI? SHO White floodlight is intended for interior and exterior applications, and contains a total of 17 Seoul Semiconductor 4-watt Acriche LEDs.
+++++++
This article was published in the April 2008 issue of LEDs Magazine.
To read the full version of this article, please visit our Magazine page, where you can download FREE electronic PDF versions of all issues of LEDs Magazine.
You can also request a print copy of LEDs Magazine (available by paid subscription) and sign up for our free weekly email newsletter . About the Author Tim Whitaker is the Editor of LEDs Magazine April 2008 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2004 2005 2006 2007 2008 2009

USB C Hubs

Information technology has penetrated into all areas of our lives. With the progress of technology, the iteration rate of laptops is getting faster and faster. Previous laptops mainly used E-SATA, FireWire, VGA, DisplayPort, SD card slot, USB A, 3.5mm headphone jack, HDMI or RJ45 ports.But manufacturers began stripping connectors from laptops to make them thinner and lighter. Most new laptops now have a USBC port (Thunderbolt or full-featured USBC) and an audio jack. The laptop is thin, but the missing ports are useless. This is where the USB C Hubs comes in.

Type C Usb Hub can support USB, PD, DisplayPort, Thunderbolt, and other protocols. Using USB HUBS, you can extend multiple common connectors directly to your laptop. Mosses are compact, so you can take them anywhere. All peripheral devices are centrally connected to the hub, which reduces the hassle of plugging in and out of the laptop port and makes your desktop cleaner. Let's take a closer look at its capabilities so you can determine how many ports you need.

So these are all important ports on the hub, with the exception of the 3.5mm audio jack. Also, while aesthetics are not important, choosing a nice hub will make you happier. There are rectangular, square, and circular centers on the market to meet your desk setup needs. Usually, the rectangular type is best for your desk because the cables can be well organized if all the ports are on one side of the center.

Usb C Hubs,4 Port Usb C Hub,Usb C Multiport Hub,Usb Hub With Hdmi Port

Henan Yijiao Trading Co., Ltd , https://www.yjusbcable.com