Abstract: An example adjustable gas burner system described herein includes an adjustable burner assembly, a gas and air mixture assembly, a motion assembly, and a controller. The adjustable gas burner system allows a user to adjust a shape and size of the heat zone produced by the system. An example adjustable burner assembly can include an adjustable gas burner arm and a stationary central burner. The gas and air mixture assembly can include a gas and air mixing chamber. The motion assembly can include a gear system and a motor. An example controller may include a knob assembly.

Abstract: A controller is provided to operate a glass heater mounted in a door of an oven to heat glass mounted to the door that provides a view into the oven cavity. (A) An indicator of an oven cavity temperature value or an oven temperature setpoint value is received. The oven cavity temperature value indicates a current temperature in an oven cavity, and the oven temperature setpoint value indicates a temperature set point. (B) A voltage value or a current value is determined based on the oven cavity temperature value or the oven temperature setpoint value. (C) The determined voltage value or the determined current value is provided to operate the glass heater. (D) (A) through (C) are repeated until the oven is switched to an off-state or the oven cavity temperature value is greater than or equal to the oven temperature setpoint value.