4G technologies are designed to provide IP-based voice, data and multimedia streaming at speeds of at least 100 Mbit per second and up to as fast as 1 GBit per second. 4G LTE is one of several competing 4G standards along with Ultra Mobile Broadband (UMB) and WiMax (IEEE 802.16).
An electrical ballast is a device placed in line with the load to limit the amount of current in an electrical circuit. It may be a fixed or variable resistor.
Wiring in the ballast chamber is critical to the quality of light and dimming consistency between lamps. To minimize inconsistent dimming light levels and to eliminate unpredictable lamp starting and lamp dropout, the following guidelines must be followed: â¢ When ballasts are installed, all lead wires should be kept as short as possible