The SV Lighting Business Unit of Nexxus Lighting, Inc. announced that it has introduced the industry's first LED floodlight SAVI® SHO White that operates directly on the forward line voltage without the need for internal or external converters.
The SAVI? SHO floodlight is a white LED floodlight that can be used in indoor and outdoor lighting with Seoul Semiconductor's 4W Acriche LED product, which operates directly at standard 120V AC (AC) voltage. According to the SV Lighting Business Unit, the technology has been patented and plans to launch other 120V products for the commercial lighting market in 2008. The product uses 17 Acriche LEDs with a power of 68W (4W per LED) and a total light output of 1394lm, which is 20.5lm/w.
LEDs typically operate only on DC (direct current) power, so an internal or external converter is required to convert the alternating current to direct current. Nexxus claims that this converter not only increases the cost, but also reduces the life of the LED, and it is easy to become a weak link in the system, which is the advantage of AC LED.
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USB3.0 provides a standard interface for all kinds of devices that are connected to PCS or audio/high-frequency devices.The theoretical transmission speed is up to 5Gbps. HUB is commonly known as a hub, which is used to connect multiple computers or network devices in a network using a star topology. The USB 3.0 Hubs is an upgrade of the USB 2.0 Hubs. The transmission rate of the USB2.0 is 480Mbps, and the transmission rate of the USB3.0 is 5Gbps. The maximum transmission speed is 10 times that of the USB2.0, and the transmission speed is faster.
The USB 3.0 hub provides a quick and easy way to connect all the peripherals you use on your desktop. You can connect 2 external monitors, gigabit Ethernet ports, headphones/speakers, USB printers and scanners, keyboards, mice and other peripherals with a single USB 3.0 cable to your computer for up to 5Gbit/s external storage access (10 times faster than USB 2.0). USB HUBS can do split, but not evenly. If, as the subject says, you only have two devices, and the two devices are transmitting at the same time and taking up as much bandwidth as possible, then you end up with two devices each taking up 50% of the bandwidth. Due to the fast theoretical speed of USB3.0, even if divided into four parts, the theoretical bandwidth of each port is still as high as 1Gbps, and the number of converted bytes is close to 100MB/s, which is still a very high bandwidth.
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