| 摘要 |
<p>A device for protecting a PTC(Positive Temperature Characteristic) heater and a control method thereof are provided to precisely protect a PTC heater by determining an overheating state thereof according to measured power consumption. A device for protecting a PTC heater includes a heater(60) compensating the temperature of atmospheric air, a current detecting part(78) for detecting an operating current of the heater, and a control part(74) measure power consumption according to the detected operating current to determine a heating state of the heater and control the power applied to the heater according to the determination result.</p> |
