在脉冲技术中,经常需要一个脉冲源,以满足数码的运算、信息的传递和系统的测试等用途的需要。多谐振荡器就是脉冲源中比较常见的一种。它的输出波形近似于方波,所以也称之为方波发生器。由于方波是由许许多多不同频率的正弦波所组成,因此取得了“多谐”的称呼。一般来讲,象三角波、斜波、锯齿波和方波等非线性波型发生器,是由下述三部分构成:积分器(又称之为定时电路),比较器和逻辑电路。如图1的方框图所示。这三部分的作用可以仅由一个或两个集成运算放大器(以 In pulse technology, a pulse source is often needed to meet the needs of digital operations, message passing, and system testing. Multivibrator is the more common type of pulse source. Its output waveform is similar to a square wave, so it is also called a square wave generator. Since the square wave is composed of many sine waves of different frequencies, it has achieved the name of “multi-harmonic”. In general, nonlinear wave generators such as triangle, ramp, sawtooth, and square wave are composed of three parts: an integrator (also called a timing circuit), a comparator, and a logic circuit. As shown in the block diagram of Figure 1. The role of these three parts can only be one or two integrated op amps