Voltage boosting system and method for electronic thermostat rel

Details Voltage boosting system and method for electronic thermostat rel Voltage boosting system and method for electronic thermostat rel

1998-03-17

1999-09-28

Tanner, Harry B.

Automatic temperature and humidity regulation

Motors

Electric

62131, 324417, 361170, G05D 2300

Patent

active

059573740

ABSTRACT:
A microprocessor-controlled electronic thermostat system and method that detects the status of a thermostat output relay to determine if the relay has been set to a state as requested by the microprocessor and, if not, providing a boosted or increased voltage to the output relay in an attempt to correct the relay setting. Preferably, the system determines if the output relay is correctly turned off as requested by the microprocessor, and, if it is not, a first boosted voltage value is provided to the output relay in an attempt to turn the relay off. If this fails, a second higher boosted voltage value is provided to turn the output relay off. This continues periodically until an off condition is detected.

REFERENCES:
patent: 5042264 (1991-08-01), Dudley
patent: 5277244 (1994-01-01), Mehta
patent: 5363667 (1994-11-01), Janke et al.
patent: 5579648 (1996-12-01), Hanson et al.

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