目前有线电视广泛普及,使人们不出家门即可晓知世界各地发生的事,欣赏到各种娱乐节目,享受生活。但是,有些地区有线电视信号很弱,电视机接收后的图像、声音效果很不好。本文介绍一种电路简单、容易调整的有线电视弱信号放大器电路,把它连接在有线电视信号输入端与电视机之间,能解决某些地区有线电视信号弱的问题。 At present, the widespread popularization of cable television enables people to know things happening all over the world without seeing their own home, enjoy various entertainment programs and enjoy life. However, in some areas, the cable signal is very weak and the images received by the television have poor sound effects. This article describes a simple circuit, easy to adjust the cable weak signal amplifier circuit, it is connected between the cable TV signal input and the TV, to solve the problem of weak cable signal in some areas.