Patent ID: 7279662
Filing Date: 2007-10-09
Classification: G05B,H01L

Abstract:
1. A temperature control device, comprising: a heater adapted to increase in temperature in response to received power; a plurality of heater temperature sensors, wherein each heater temperature sensor is adapted to sense a temperature associated with the heater and generate a corresponding sensed heater temperature; a heater temperature controller adapted to generate an interlock control signal when at least one of the sensed heater temperatures respectively sensed by the plurality of temperature sensors exceeds a heater reference temperature; a power supply unit adapted to stop supplying power to a power supply controller when the heater temperature controller provides the interlock control signal to the power supply unit, wherein power is provided to the power supply unit by an Alternating Current (AC) power source; an alarm controller receiving a sensed heater temperature from the heater temperature controller and adapted to generate an alarm sound generation control signal and an alarm display control signal when the sensed heater temperature does not change during a predetermined amount of time.