摘要
介绍了基于电压跟随的视频VGA信号分配的原理以及实际电路的设计,以实现视频信号本地的多路显示。视频信号在实现远程传输时,需对视频信号进行放大,增大信号的驱动能力。为此,介绍了基于EL4543差分放大的视频信号远程传输发送端电路及其工作原理;在远程接收端,通过EL9111差分接收和EL9115的模拟补偿,恢复视频信号。采用本设计的视频传输距离可达200 m左右。
The circuit of VGA signal de-multiplexing based on transistor voltage follower theory is given and VGA signal can be multi-way displayed by the de-multiplexer. To achieve long-distance transmission of VGA signal, the VGA signal should be amplified to increase its driving power. The principle and circuit of long-distance transmission system based on EL4543 are introduced. The receiver circuit based on EL9111 and EL9115 is given. The transmission distance is no less than 200m by adopting this system.
出处
《现代电子技术》
2010年第23期168-170,173,共4页
Modern Electronics Technique
