在不少电子测量仪器和控制装置中,常常要用到阶梯信号。这里介绍一种简便可靠的阶梯波产生电路,它的特点是电路结构简单,阶梯的个数在0～9范围内可以随意选择,阶梯幅度的调节也很方便。实验证明,电路工作稳定可靠。本电路由触发器、分频器和积分器构成,实际的电路原理图如图1所示。图中,用价廉通用的运算放大器LM741C接成过零点检测电路作为触发器(或直接采用现成的斯密特触发器),以产生所需的触发脉冲, In many electronic measuring instruments and control devices, often to use the ladder signal. Here a simple and reliable step ladder wave generating circuit is introduced, which is characterized by a simple circuit structure, the number of steps in the range of 0 to 9 can be arbitrarily selected, the adjustment of the step amplitude is also very convenient. Experiments show that the circuit work is stable and reliable. The circuit consists of flip-flop, divider and integrator, the actual circuit diagram shown in Figure 1. The figure, with a cheap general-purpose operational amplifier LM741C connected as a zero-crossing detection circuit as a trigger (or the use of off-the-shelf Schmitt trigger) to generate the required trigger pulse,