无线音响装置主要由调频发射、调频接收、音频功放三部分组成,综合了无线话筒、收音机、简易电台、实用功放等设备的常见电路。在本设计中,笔者本着简单实用的原则合理选择单元电路,提高了系统的稳定性和使用的灵活性。读者完全可以根据自己需要,在笔者设计的基础上,完善此设计,制作出性能更高的作品,如发烧级音响、高保真收音头、无线话筒、立体声调频发射装置等。 1.系统结构分析系统功能框图见图1,不同信号的 Wireless audio device mainly by the FM transmitter, FM receiver, audio amplifier consists of three parts, a combination of wireless microphones, radios, simple radio, practical amplifier and other devices common circuit. In this design, the author based on the principle of simple and practical reasonable selection of unit circuits, improve the stability of the system and the use of flexibility. Readers can according to their needs, based on the author’s design, to improve this design, to produce higher performance works, such as fever-level audio, high fidelity radio head, wireless microphone, stereo FM transmitter and so on. 1. System Structure Analysis System block diagram shown in Figure 1, different signals