For a strip transmission line shielded by rectangular walls, the Green抯 function is helpful to construct the variation expression of the electrostatic energy. Thomson theorem is employed to determine the charge distr...For a strip transmission line shielded by rectangular walls, the Green抯 function is helpful to construct the variation expression of the electrostatic energy. Thomson theorem is employed to determine the charge distribution on the strip. The electrostatic force on each side of the rectangular shield wall is achieved by using the principle of virtual work. The result is easy to be obtained by computerized calculation.展开更多
LED(Light Emitting Diode)是一种能够将电能转化为可见光的半导体,由于其具有容易控制、低压直流驱动、组合后色彩表现丰富、使用寿命长等优点,广泛应用于城市亮化工程、大屏幕显示系统中。彩墙屏,用多个 LED 发光二极管组合起来的显...LED(Light Emitting Diode)是一种能够将电能转化为可见光的半导体,由于其具有容易控制、低压直流驱动、组合后色彩表现丰富、使用寿命长等优点,广泛应用于城市亮化工程、大屏幕显示系统中。彩墙屏,用多个 LED 发光二极管组合起来的显示单元,通过电源和控制部分的编程,可产生多种颜色和亮暗的变化组合,能充分满足一些娱乐性和具特殊灯光效果场所的要求,其新颖、环保、色彩变化艳丽,体现了高品位 DISCO酒吧的特色。彩墙屏的解决方案是基于发光二极管 LED 的应用和控制技术,在色彩的表现能力、灯光的控制能力、环保节能等方面,要比传统的霓虹灯、白炽灯、卤钨灯等具有不可比拟的优势。展开更多
基金Funded by the Key Research Foundation of Sichuan Education Commission(No. 2002A046 )
文摘For a strip transmission line shielded by rectangular walls, the Green抯 function is helpful to construct the variation expression of the electrostatic energy. Thomson theorem is employed to determine the charge distribution on the strip. The electrostatic force on each side of the rectangular shield wall is achieved by using the principle of virtual work. The result is easy to be obtained by computerized calculation.
文摘LED(Light Emitting Diode)是一种能够将电能转化为可见光的半导体,由于其具有容易控制、低压直流驱动、组合后色彩表现丰富、使用寿命长等优点,广泛应用于城市亮化工程、大屏幕显示系统中。彩墙屏,用多个 LED 发光二极管组合起来的显示单元,通过电源和控制部分的编程,可产生多种颜色和亮暗的变化组合,能充分满足一些娱乐性和具特殊灯光效果场所的要求,其新颖、环保、色彩变化艳丽,体现了高品位 DISCO酒吧的特色。彩墙屏的解决方案是基于发光二极管 LED 的应用和控制技术,在色彩的表现能力、灯光的控制能力、环保节能等方面,要比传统的霓虹灯、白炽灯、卤钨灯等具有不可比拟的优势。