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时基电路和少量分立元件,就制作一个有压、欠压和断电迟三种保护功自动电冰箱保护器。