Patent ID: 8559148

Claim:
A household appliance ( 1 ) comprising a control circuit ( 2 ) that maintains the electronic control and a safety circuit ( 3 ) that detects the errors in the control circuit ( 2 ) and cuts off the output of the circuit ( 2 ) in case an error occurs and characterized by a safety circuit ( 3 ) comprising thereby maintains the reliability control of the circuit ( 2 ) in two phases by means of a comparator ( 4 ) that compares hardware-wise the output voltage (Vin) of the control circuit ( 2 ) with a full wave form benchmark, having low (V.sub.L) and high (V.sub.H) limit values and a block circuit ( 5 ) that converts the output signal (V 1 ) of the comparator ( 4 ) to supply voltage if within the determined values, and cuts off if outside, and a switching unit ( 6 ) connected to the output (V 2 ) of the block circuit ( 5 ), actuated with the same variable signal as the control circuit ( 2 ), and cuts off the output (Vin) of the control circuit ( 2 ) if an unwanted signal is detected at the output (V 2 ) of the block circuit ( 5 ).