Entelligent and electric power saving protective device for electric refrigerator

The utility model discloses an intelligent and electric power saving protective device for electric refrigerators, which overcomes the shortcoming that the temperature of a freezing chamber and a cooling storage chamber of the existing electric refrigerator can not be changed. Besides, the existing refrigerator has the shortcomings of large electric power consumption and low utilization rate. The utility model is composed of a rectification voltage stabilization circuit, a time delay protective circuit used for overvoltage and undervoltage, a temperature control electric power saving circuit and a protective circuit of an air conditioner. When the utility model is connected in series to the position between commercial power and an electric refrigerator, the utility model not only can make an electric refrigerator keep the original functions, but also has the functions of obvious electric power saving when little food is stored in an electric refrigerator and the food only has need of freezing for a short time or the electric refrigerator is only used for cooling and storing food. Meanwhile, the utility model can also make an electric refrigerator and an air conditioner obtain effective protection when an electric refrigerator and an air conditioner have the phenomenon of overvoltage or undervoltage or the electric power is instantly cut off.