居住在楼上的居民,为了防止因自来水水压波动过大而造成的断水,一般都备有一个水缸(或水池)用来储水。由于水缸没有水位自控装置,放水时必须有人看管,稍不注意还会水满外溢。这里向大家介绍一种制作容易、造价低廉、性能优良的水满告知器。 1.工作原理电路如图1所示,由音乐集成块A及外围元件组成。其工作原理是利用水的导电特 Residents living upstairs usually have a water tank (or pool) for storing water in order to prevent water loss caused by excessive fluctuation of water pressure in the water supply. As the water tank does not have a water level control device, water must be someone care, a little careless but also water overflow. Here to introduce a production easy, low cost, excellent performance of water full of inform. 1. Working principle Circuit shown in Figure 1, the music block A and peripheral components. Its working principle is the use of water conductive special