SAFETY DEVICE FOR ELECTRIC EQUIPMENTS

摘要

A safety device for electric equipments, which is aimed to get over the defects in the prior art, can monitor roundly the ground, the live line and the neutral line, and can prevent from reversing connection between the live line and the neutral line, and it is in favor of monitoring the circuit fault, also can reset automatically and can be embedded in all kinds of electric equipments. The safety device has simple configuration, small size and high safety protection performance. The safety device mainly comprises a switching circuit, a rectifier circuit and a relay, the live line and the neutral line which are connected to the power source pass though the rectifier circuit and the switching circuit, and then provide electricity to the relay. The switching circuit is used to controlling the connecting or disconnecting with the power source according to the connection state of the ground, the monitoring terminal of the switching circuit is connected to the ground. The rectifier circuit is used to provide electricity to the relay after the power source being rectified, the relay is used to controlling the power source connecting with the live line and the neutral line.