基于电容恒流充放电的三角波/锯齿波Multisim仿真

Multisim Simulation of Triangle Wave/Sawtooth Wave Based on Capacitor Constant Current Charge and Discharge

三角波/锯齿波作为常用的输入信号,广泛用于各种电子电路中。常见的三角波/锯齿波信号发生器多采用555定时器、单片机DAC、数字合成芯片DDS等方法。本文采用电容恒流充放电的方法产生三角波,通过调整电容的充放电速率,即可改变三角波充放电斜率,使其成为锯齿波。同时,还对三角波、锯齿波的产生方法进行理论说明,通过Multisim软件进行电路仿真,并对仿真结果进行分析。

as a common input signal,triangle wave/sawtooth wave is widely used in various electronic circuits.The common triangle wave/sawtooth wave signal generator uses 555 timer,single chip DAC,digital synthesis chip DDS and other methods.In this paper,the method of constant current charge and discharge of capacitor was used to gener?ate triangle wave.By adjusting the charge and discharge rate of capacitor,the charge and discharge slope of triangle wave can be changed to make it a sawtooth wave.In this paper,the generation methods of triangle wave and sawtooth wave were explained theoretically.The circuit simulation was carried out by Multisim software,and the simulation re?sults were analyzed.