Two terminal line voltage thermostat

Details Two terminal line voltage thermostat Two terminal line voltage thermostat

1994-03-25

1995-10-10

Wayner, William E.

Automatic temperature and humidity regulation

With timing element

Timer other than clock

219501, 307 66, F23N 520

Patent

active

054564077

ABSTRACT:
A two terminal line voltage thermostat includes a switch which effectively connects line voltage to a heater load. The entire process is controlled by an integrated circuit microcontroller which is powered by a rectified voltage from a transformer secondary connected to a primary which is in series with the heater load. Backup battery power is provided to maintain limited functions of the microcontroller in the event of overall power loss. The microcontroller is programmed to meet the temperature sensing and control requirements specific to a two terminal electric baseboard heating installation.

REFERENCES:
patent: 4404813 (1983-09-01), Paddock et al.
patent: 4776514 (1988-10-01), Johnstone et al.
patent: 4948044 (1990-08-01), Cacciatore
patent: 5008775 (1991-04-01), Schindler
patent: 5304781 (1994-04-01), Stalsberg

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