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在许多没有安装有线电视系统的地方,人们为了改善电视机的接收效果,纷纷购买室外型天线。为了清晰的接收各个方向的电视台信号,人们买得最多的是带有电机,可旋转的转向型天线。这种天线虽然接收效果好,又号称遥控转向,但只是有线遥控,若电视台不在同一方向,则每当换台时,都要走到电视机前,用手按下转向按钮,等信号清晰时再松开。虽然使用者的彩电带遥控,但天线不能遥控,让人觉得很遗憾。经笔者改后的天线遥控转向电路如图1所示。经实际使用,效果良好,特写此稿供大家参考。
Where many cable television systems are not installed, people buy outdoor antennas in order to improve reception. In order to clearly receive television signals in all directions, the most commonly purchased is a motorized, rotatable steering antenna. Although this antenna has good reception effect and is also known as remote control steering, it is only a wired remote control. If the television station is not in the same direction, it should go to the front of the television set whenever the station is changed and press the steering button by hand. When the signal is clear Release again Although the user’s color TV with remote control, but the antenna can not be remote, people feel very sorry. After the author changed the antenna remote control steering circuit shown in Figure 1. The actual use of good results, close-up of this draft for your reference.