Whirlpool Corporation
MICROWAVE OVEN HAVING DOOR WITH TRANSPARENT PANEL

Abstract:

A method of terminating power to a microwave oven having at least one surface with a transparent glass panel. The method comprises emitting microwave radiation into a cooking cavity of the microwave, monitoring resistance of a conductive coating on the at least one surface of a transparent glass panel with a circuit that measures sheet resistance of the conductive coating, and terminating power to the microwave oven when a change in resistance exceeds a threshold value.