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该机由发射电路和接收电路构成,均由两节7号电池供电。发射电路可驳接电视机、收录机、CD、VCD、LD等的音频输出。并可改变其发射频率,以防止干扰电视图像。其发射电流为1.1mA左右,发射距离无阻挡时可达50m。接收电路可作BP式FM收音机,工作电流为8mA左右。现将电路原理介绍如下,可供感兴趣的朋友参照制作。电路原理接收电路如图1所示。KA22429为一块16脚双列扁平封
The aircraft by the transmitter circuit and receiver circuit, both by seven 7-cell battery. Transmitter circuit can be connected TV, tape recorders, CD, VCD, LD and other audio output. And change its transmitting frequency to prevent interference with the TV image. The launch current is about 1.1mA, the launch distance up to 50m without blocking. Receiving circuit can be used for BP-FM radio, the working current is about 8mA. The circuit principle is introduced below, for the reference of interested friends. Circuit principle Receive circuit shown in Figure 1. KA22429 is a 16-pin double row flat seal