论文部分内容阅读
为了解决偏远山区电视接收信号差、收台少的难题,本人设计出一种适用的天线放大器。它分成三个档次,即零增益档,用于信号强时,不经过放大,直接输出;中增益档,用于信号较弱时,经一定增益放大后输出;高增益档,用于信号很弱时,可经过比普通放大器高1倍增益放大后输出。高增益放大可以解决山区信号弱,虽能收到台,但不能收看的难题。该放大器经本人制作试用,效果甚好,现把它推荐给爱好者,以便为更多的山区人民服务。工作原理:图1为放大器电路原理图,该放大器电源经变压器T1变压,二极管
In order to solve the problem of poor signal reception in remote mountainous areas and receiving fewer stations, I designed a suitable antenna amplifier. It is divided into three grades, that is, zero-gain file, for strong signal, without amplification, direct output; in the gain file, the signal is weak, amplified by a certain gain after the output; high gain file, for the signal is very Weak, can be higher than the normal amplifier 1 times the gain amplification output. High gain amplification can solve the weak signal in the mountains, although Taiwan can receive, but can not watch the problem. The amplifier by their production trial, the effect is very good, now it is recommended to lovers, in order to serve more people in the mountains. How it works: Figure 1 for the amplifier circuit diagram, the amplifier power transformer T1 transformer, diode