Charging circuit for battery in thermostat with battery...

Details Charging circuit for battery in thermostat with battery... Charging circuit for battery in thermostat with battery...

H - Electricity

02

J

320/2.5, 341/32.

H02J 7/00 (2006.01) G05D 23/275 (2006.01)

Patent

CA 1109930

ABSTRACT OF THE DISCLOSURE 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 a 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.

351080

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