制作一款调频无线耳机,所需要的材料费用不超过50元。现在,一般大家在电脑上用的耳机都是有线耳机,这种耳机比较容易出故障,特别是容易出现断线的问题,一旦断线,耳机就只能报废,而且拉着长长的线也不便于移动。本文将介绍一款调频无线耳机,采用调频无线电波为信号的传递载体,因此,可以在一定的距离(5m)内无线移动双向传递信号(即带话筒的无线耳机)。制作它所需要的材料费用也比较低,总共不超出50元。 Production of a FM wireless headset, the required material costs not exceeding 50 yuan. Nowadays, most of the earphones used on computers are wired earphones, which are relatively easy to fail. In particular, they are prone to disconnection. Once the earphone is disconnected, the earphone can only be scrapped, and the long wire Not easy to move. This article describes a FM radio headset that uses FM radio waves as the signal carrier for transmitting signals so that it can be wirelessly moved in both directions (ie, wireless headphones with microphones) over a distance (5m). The material cost of making it is also relatively low, a total of not more than 50 yuan.