555 limit when one group integrated electrical circuit load circuit is shown. It can limit the large load electric power. When the electricity load exceeds a set value, automat
ically breaking power; when the load to be reduced to below the set value, it can automatically restore power. It uses capacitor step-down, using 555 IC A composition monostable delay circuit. Adjust R4, C4, can be changed variable delay time adjustment potentiometer RP, you can change the operation setting value.