F - Mech Eng,Light,Heat,Weapons – 25 – D
Patent
F - Mech Eng,Light,Heat,Weapons
25
D
F25D 21/08 (2006.01) F25D 21/00 (2006.01)
Patent
CA 2140964
An apparatus controls an appliance, the appliance including a compressor, a fan, and a heater. The apparatus includes a first switch for selectively coupling a first terminal with one of a second terminal and a third terminal in response to a first control signal. The first terminal is coupled with an energy source and the third terminal is coupled with the compressor. The apparatus further includes a second switch for selectively coupling the second terminal with the heater and the third terminal with the fan in response to a second control signal. The apparatus still further includes a control circuit coupled with the first switch and the second switch for generating the first control signal and the second control signal. A relay drive circuit couples relay coils in series to control the first switch, the second switch, and the third switch. A bypass switch allows a single current to selectively energize one or both relay coils.
Novak Robert M.
Paragon Electric Company Inc.
Shapiro Cohen
LandOfFree
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