tutamen

The author introduces the process of using NE555circuit and a few fittings to make a tutamen of automatic refrigerator with functions of over-pressure, deficient pressure, and delay.

本文介绍了一种只用一块NE555路和少量立元件,就能制作一个具有过压、欠压和断迟三种保护功能的全自动冰箱保护器。