Patent ID: 6157010
Filing Date: 2000-12-05
Classification: G03G,Y10S

Abstract:
A heater control device comprising:a heater for heating a load;a sensor for detecting the temperature of the load heated by said heater;a temperature adjusting circuit for generating a control signal that controls the driving of said heater so that the output of said sensor falls within a target temperature range;a first generator circuit for generating a driving pulse that phase-controls said heater at a fixed phase angle;a second generator circuit for generating a drive pulse that drives said heater at a full-rated power; anda selector circuit for selecting the drive pulse from said first generator circuit so that said heater is driven by the drive pulse from said first generator circuit for a duration from the start of the driving and selecting the drive pulse from said second generator circuit after the duration elapses each time said heater is driven in response to the control signal output by said temperature adjusting circuit.