音频采集与放大电路实验教学设计

Design of Audio Frequency Acquisition and Amplification Circuit Practical Teaching

音频采集与放大电路由电源、音频采集、电压放大和功率放大四个模块组成。该系统作为电子电路设计课题,对于学生来说,设计思路明确,易于将理论所学用于电路设计。对于教学来说,可以根据学生能力强弱调整设计实现要求,适应不同层次学生的电路设计和工程实践。指导学生通过Multisim软件仿真各电路,并用元器件在电路板上焊接实际电路,最后进行测试,使扩音器电路满足输出功率、负载阻抗、频率等多方面的要求,并进行相应的实验功能扩展。

The audio frequency acquisition and amplification circuit consists of four modules:power supply,audio frequency acquisition,voltage amplification and power amplification.As a subject of electronic circuit design,the system has clear design ideas for students and is easy to apply the theoretical knowledge to circuit design.For teaching,the design requirements can be adjusted according to the students’ability to adapt to different levels of students circuit design and engineering practice.Instruct the students to simulate each circuit through Multisim software,weld the actual circuit on the circuit board with components,and finally carry out the test to make the amplifier circuit meet the requirements of output power,load impedance,frequency and other aspects,and carry out the corresponding expansion of experimental functions.