信号发生器是一种能能够产生多种波形,如三角波、锯齿波、矩形波（含方波）、正弦波的电路。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。现在我们通过对信号发生器的原理以及构成设计一个能变换出锯齿波、正弦波、方波的简易发生器。我们通过对电路的分析，参数的确定选择出一种最适合本课题的方案。在达到课题要求的前提下保证最经济、最方便、最优化的设计策略。按照设计的方案选择具体的原件，焊接出具体的实物图，并在实验室对焊接好的实物图进行调试，观察效果并与课题要求的性能指标作对比。最后分析影响因素。-Signal generator is able to produce a variety of waveforms such as triangle wave, sawtooth, square wave (with square wave), sine wave circuit. Signal generator experiments and equipment testing at the circuit has a very wide range of uses. Now we are on the principle of signal generator and the form can change the design of a sawtooth, sine wave, square wave generator is simple. Through the analysis of the circuit, selects a parameter to determine the most suitable solution of this issue. Requirements of the subject in the premise to ensure the most economical, most convenient and optimal design strategy. Selected according to the specific design of the original program, welding a specific physical map, and in good physical map of the welding lab debug, and with the requirements of the subject observe the effect of performance indicators for comparison. Finally factors.