Abstract: In order to permit use of a refrigerator by observant Jews during Holiday times, Normal and Holiday modes are established. During Holiday mode, repetitive fixed frequency and fixed duty cycle time cycles are established, each time cycle having “on” and “off” portions. During “on” cycle portions current flow through the refrigerator is permitted as determined by the refrigerator compartment temperature. During “off” cycle portions current flow is inhibited irrespective of refrigerator compartment temperature changes. Visible indicators inform users of the status of the current cycle portion, thereby advising them to open the refrigerator door only during “off” cycle portions.

Abstract: In order to permit use of a refrigerator by observant Jews during Holiday times, Normal and Holiday modes are established. During Holiday mode, repetitive fixed frequency and fixed duty cycle time cycles are established, each time cycle having “on” and “off” portions. During “on” cycle portions current flow through the refrigerator is permitted as determined by the refrigerator compartment temperature. During “off” cycle portions current flow is inhibited irrespective of refrigerator compartment temperature changes. Visible indicators inform users of the status of the current cycle portion, thereby advising them to open the refrigerator door only during “off” cycle portions.

Abstract: Techniques are provided for inhibiting changes in the operational state of electrical circuits for lights, appliances and other devices by controlling the effect of manual actuation of an electrical switch in an electrical circuit. A normal mode is established in which manual actuation of the switch effects a change in a state of current flow in the circuit. An alternative holiday mode is also established in which manual actuation of the switch has no effect on current flow in the circuit. Automatic switching occurs between the normal mode and the holiday mode at specific times corresponding to specific events dependent on the time of year, a time of day and a geographic location of the circuit.