PROTECTION DEVICE, PROTECTION METHOD USING THE SAME, METHOD FOR PROCESSING SIGNAL USING THE SAME, AND METHOD FOR DETECTING QUANTITY OF ELECTRICITY USING THE SAME

摘要

A protection device detects a temperature in a predetermined monitoring place in an electronic apparatus 3 to protect the electronic apparatus 3, and includes an oscillating circuit 20 for generating a clock signal Vck having a predetermined cycle and a predetermined ON time, and a temperature detection circuit 16 for detecting the temperature in the monitoring place during the ON time of the clock signal Vck. The protection device shuts off supply of electric power to the electronic apparatus 3, when the temperature in the monitoring place exceeds a predetermined temperature.