is desired to turn on the appliance after plugging it into a receptacle power source pushing a momentary double pole single throw switch dpst with respect to the normally open switch set or reset button 564 this applies half wave rectified direct current to the bobbin coil 560 this results in applying a voltage from the phase line through a contact of the double pole single throw switch dpst through a diode d 1 thence through the bobbin coil 560 with the other end of the coil 560 going through the other contact of the double pole single throw switch to neutral thus by pushing the switch or reset button the coil 560 is energized and the main contact 536 534 are closed once the main contact 536 534 are closed in parallel path for the current is provided through another diode d 2 such that there is current flow from phase through diode d 2 through the coil 560 with its free wheeling diode in parallel with it thence through the collector of a transistor q 1 the emitter of the transistor q 1 being connected to neutral the transistor q 1 is kept on by a resistor going from phase to the base r 1 is the resistor between phase and the base once the coil 560 energizes itself as described the transistor q 1 is turned on and then the momentary contact in the dpst is released and the coil.