Automatic wall thermostat

Details Automatic wall thermostat Automatic wall thermostat

1994-05-20

1996-04-09

Wayner, William E.

Automatic temperature and humidity regulation

High and low temperature alternate

165 12, 364557, 236 94, G05D 2300

Patent

active

055053777

ABSTRACT:
An automatic thermostat which automatically reprograms itself after a power outage without the need of a backup battery or other storage device includes a temperature sensor, a set temperature potentiometer, a setback temperature potentiometer and an ambient light sensor. The thermostat also includes a microprocessor which is responsive to signals from the temperature sensor, the set and setback temperature potentiometers and the ambient light sensor. The microprocessor controls a display which displays the set temperature, the setback temperature and the actual temperature. A power outage detector detects when there is a power outage and triggers the microprocessor to reprogram itself by rereading the signals from set temperature potentiometer and the setback temperature potentiometer. A relay is controlled by the microprocessor to selectively provide power to a heating or air conditioning unit.

REFERENCES:
patent: 4318508 (1982-03-01), Glasgow et al.
patent: 4621336 (1986-11-01), Brown
patent: 5156011 (1992-10-01), Shim

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