H - Electricity – 05 – B
Patent
H - Electricity
05
B
341/27
H05B 1/02 (2006.01) G05D 23/24 (2006.01)
Patent
CA 1271825
ABSTRACT OF THE DISCLOSURE A two wire line voltage thermostat is disclosed having first and second terminals for receiving line voltage power and for connection to a load, a transformer having a current primary winding, a voltage primary winding and a secondary winding, a controller connecting the current and voltage primary windings to the terminals, the controller having at least first and second states, the controller in said first state for energizing both the current and voltage primary windings and in the second state for energizing only the current primary winding, and a temperature responsive circuit connected to the secondary winding for controlling the controller between the first and second states in accordance with sensed temperature such that the load can be energized when the controller is in one of the states and can be deenergized when the controller is in the other of the states.
523068
Johnstone Robert V.
Mcdonnell Brian E.
Honeywell Limited
Smart & Biggar
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