本文构思一种抽灌超过水限时,避免深井抽水泵空转的自动保护电路。市面上出售的水泵抽水控制器种类繁多,可谓五花八门,形色各异。然而,常见的是利用探极间的电阻变化进行水位检测,再通过放大电路 This article conceives an automatic protection circuit that avoids idling of a deep well pumping pump when the pumping is over the water limit. Pumps on the market for sale a wide range of pump controllers, can be described as varied, different shapes. However, it is common to use the resistance change between probes for water level detection, and then through the amplifier circuit