多用信号发生器设计.docVIP

多用信号发生器设计 摘要 信号发生器在动态测试领域有重要的作用。各种波形曲线均可以用三角函数方程式来表示。能够产生多种波形,如三角波、锯齿波、矩形波（含方波）、正弦波的电路被称为函数信号发生器。函数信号发生器在电路实验和设备检测中具有十分广泛的用途晶体管、运IC等通用器件制作、Ω。试验结果显示，通过调试可以正确显示所需要的波形，并利用仿真软件Maltose画出电路图，做出PCB布线图。结果显示，它们的功能较少，精度不高，频率限只有300kHz，无法产生更高频率的信号，调节方式也不够灵活，频率和占空比不能独立调节，二者互相影响ICMAX038集成芯片为核心采用微处理器控制程控继电器和数字电位器设计多功能信号发能够输出方波正弦波三角波并能实现频段选择和频段内频率微同时还可以作为频率计测频率。函数信号的产生由MAX038和外围电路完成，能产生1Hz-20MHz的波形。波形选择由单片机完成输出或输入频率经74HC390分频后，由单片机完成自动频率检测显示信号发生器ICMAX038 Multi-functional Signal Generator Abstract Signal generator in the field of dynamic testing has an important role. Various wave curves can be used to express trigonometric equation. Can produce a variety of waveform, such as triangular wave, saw tooth, rectangle wave (including square), and the sine wave function of the circuit known as the signal generator. Function signal generator circuit in the experiments and test equipment in a very wide range of uses. Yes function signal generator from the basis of non-sinusoidal signal circuits and sine-a combination of a circuit. The design of transistors, Wan Fang IC devices such as GM produced a simple set of signal generator circuit; the output can be right triangle, square and sine wave, and so on. The design of the Original Square, triangular and sine-wave circuit on the basis of an increase in amplifiers to achieve the adjustable output voltage and output impedance of 50 Ω. The results showed that, through commissioning can correct the necessary waveforms and use simulation software Maltose draw schematics, PCB wiring pattern made. The results showed that less of their functions, accuracy is not high, only limit the frequency 300 kHz, unable to generate a higher frequency signal, the lack of regulation means a flexible, frequency and duty cycle can not be independent regulation, they also affect one another. The integrated chip design to ICMAX038 MCU used as the core microprocessor-controlled digital program-controlled relays and potential design of the multi-purpose signal generato