Abstract: A timer controlled space thermostat includes a battery operated timer and charging circuit means for continuously charging the battery. The charging circuit means includes a miniature transformer having two primary windings and one secondary winding wound on a single core. When a thermostat switch therein is closed to effect energizing of space conditioning apparatus, one of the primary windings induces a stepped-up voltage and stepped-down current in the secondary winding to effect charging the battery. When the thermostat switch is open, the other primary winding induces a stepped-down voltage and stepped-up current in the secondary winding to effect charging the battery.

Abstract: A space thermostat for switching electrically operated space conditioning apparatus includes an electrically operated timer functioning to periodically change the temperature "set point" of the thermostat, a small rechargeable storage battery for operating the timer, and circuit means all contained within the thermostat casing for charging the battery when the thermostat contacts are closed. In a second form, circuit means all contained within the thermostat casing is provided for continuously charging the battery when the thermostat contacts are open or closed.

Abstract: A space thermostat for switching electrically operated space conditioning apparatus includes an electrically operated timer functioning to periodically change the temperature "set point" of the thermostat, a small rechargeable storage battery for operating the timer, and circuit means all contained within the thermostat casing for charging the battery when the thermostat contacts are closed. In a second form, circuit means all contained within the thermostat casing is provided for continuously charging the battery when the thermostat contacts are open or closed.

Abstract: A timer controlled space thermostat includes a timer movement energized by a rechargeable battery. A first timer operated switch is in circuit with temperature responsive switching means and space conditioning apparatus control means and is operative to alternately control operation of the space conditioning apparatus control means at one and then the other of two different levels of temperature. A second timer operated switch is in circuit with the space conditioning apparatus control means and with circuit means for recharging the battery and is cyclically actuated to an open position to ensure complete de-energization of the space conditioning apparatus control means and to a closed position to enable the battery to be recharged.