利用集成运算放大器、积分电路以及差分放大电路等器件构成电路，设计完成一个压控型函数发生器。通过改变输入电压，实现信号输出频率的调节，并变换产生方波、三角波以及正弦波。-With integrated operational amplifier, the integrating circuit and a differential amplifier circuit and other devices constitute a circuit, a voltage-controlled type design is complete function generator. By changing the input voltage, the output frequency signal to achieve the adjustment, and converted to produce a square wave, triangle wave and sine wave.