在进行电子小设计、小制作，以及维修教学仪器等工作中，我们常常会遇到手中没有相同值的电子元件的情况。这就需要将我们手中的电阻串并联、电容串并联、电感串并联，以达到我们需要的值。这时候，我们往往是用串并联起来进行计算，考虑怎样利用手中的电子元件来完成制作。在 In electronic small design, small production, and maintenance of teaching equipment, we often encounter situations where there are no electronic components with the same value. This requires paralleling the resistor string in our hands, connecting the capacitor string in parallel, and connecting the inductor string in parallel to achieve the value we need. At this time, we often use serial and parallel calculations to consider how to use the electronic components in the hand to complete the production. in