学位论文--基于max038的多功能信号发生器的设计.doc

编号 论文 题目： 物联网工程 学院 专业 年月  关键词：单片机MAX038； DESIGN SUMMARY Versatile signal generator able to produce a variety of waveforms such as triangle wave, square wave (including square), sine wave signal generator circuit, the circuit experiments and equipment testing has a very wide range of uses．With the development of technology in all aspects of the signal generator is increasingly demanding．Because the waveform signal generator traditional low accuracy and poor frequency stability characteristics, can not meet the needs of many practical applications．And on the market are expensive low frequency signal generator, in order to meet the actual needs, to design a low-frequency signal generator．This paper describes a microcontroller-based control of multi-signal generator, which uses a combination of methods MAX038 with microcontroller through Protel99 hardware design and simulation software, using C language programming, combined with software control signal generator, change the frequency measurement and display process, the signal generator to microcontroller (AT89C52) as the control center, mainly by the power supply module, the key circuit module, LED display module, the waveform generating module, a power amplifier module, shaping circuit, frequency divider circuit modules and other components．This design has basically reached the initial design requirements, you can generate 1HZ-1MHZ can manually adjust the frequency and duty cycle of the triangular wave, sine wave, square and rectangular wave, the waveform signal generated by the power amplifier circuit of the output waveform signal amplitude , waveform control stability, while achieving the output signal frequency and duty cycle measurements, and can be displayed, since the multi-signal generated by the signal generator is relatively wide frequency band, the first output of the power amplifier circuit side shaping process, since the 12M crys