Patent ID: 8300376

Claim:
A temperature protection circuit connected between a power circuit and an operating circuit, the temperature protection circuit comprising: a detection circuit to determine a temperature of an electronic device, and output a detected temperature signal and a reference temperature signal corresponding to a preset temperature value for the electronic device; a comparison circuit connected to the detection circuit, to receive the detected temperature signal and the reference temperature signal from the detection circuit and compare the detected temperature signal to the reference temperature signal, and output a control signal; a switching circuit connected to the comparison circuit, wherein the comparison circuit outputs the control signal to open or close the switching circuit; a control circuit connected to the switching circuit, the power circuit, and the operating circuit, wherein when a temperature of the electronic device is below the preset temperature value for the electronic device, the detected temperature signal exceeds the reference temperature signal received by the comparison circuit, the comparison circuit outputs a control signal to open the switching circuit, the control circuit directs the power circuit to provide a voltage to the operating circuit of the electronic device, and when a temperature of the electronic device exceeds the preset temperature, the detected temperature signal is below the reference temperature signal of the electronic device, the comparison circuit outputs a control signal to close the switching circuit, and the control circuit directs the power circuit to stop supplying voltages to the operating circuit of the electronic device.