在进行电路设计、制作及维修的过程中,常常会遇到缺少规定参数的电子元件的情况,最常见的作法是:利用手中现有的电子元件通过计算,采用串并联的形式,自己组装成符合规定参数的电子元件的替代品。但是,当参数值不是整数时,通过公式进行计算就相当麻烦,能否简化计算的麻烦,一目了然地知道电子元件的参数值呢?经过研究探索,笔者借助直角坐标尺较好地解决了这个问题。 In the process of circuit design, manufacture and maintenance, often encounter the lack of the required parameters of the electronic components, the most common approach is: the use of existing electronic components in the hands of computing, in series and parallel form, assembled into Substitutes for electronic components that meet the specified parameters. However, when the parameter value is not an integer, the calculation by the formula is quite troublesome, can simplify the calculation trouble, know the parameter value of the electronic component at a glance? After research and exploration, the author solved the problem with the rectangular coordinate .