FIELD: electric engineering.
SUBSTANCE: device contains microprocessor, unit of generation of analog signal, which is proportional to inlet range of grid voltage, unit of pulse generation in the moment of grid voltage transition through zero, threshold element with unit of pulse sequence generation whenever current increases at threshold element above the permissible level and unit of actuator control, which are connected to microprocessor, unit of stabilised voltage generation, which is intended for supply to all above-mentioned units and microprocessor, light diode and sound generator, which are connected to microprocessor, actuator that serves for connection/disconnection of household appliances from AC grid and is connected to microprocessor through control unit and set of sockets for connection of household appliances, which is connected to actuator and AC grid voltage through threshold element.
EFFECT: higher reliability of operation.
7 cl, 1 dwg
