Over-heat protection device of electronic device

Abstract

This invention relates to an over-heat protecting device of an electronic device including; a sub-voltage test device testing output voltages of multiple sub-supply devices in a power supply device, sub-voltage distribution equipment used in selectively outputting output voltages of the sub-voltage test device, a supply control device outputting signals for stopping power supply by the power supply device when the output voltage of th distribution equipment is abnormal and over-heat protection device stopping power supply of the supply device according to the control signal of the supply control device.

Description

technical field [0001] The invention relates to an electronic equipment overheat protection device capable of interrupting the power supply of the power supply device by detecting the output voltage when the output voltage of the power supply device changes. Background technique [0002] During the operation of the circuit connected to the power supply of electronic equipment, if the load increases abnormally, the semiconductor power distribution device such as the transistor as the circuit element will overheat, which will cause damage to the semiconductor, so that the semiconductor power distribution device cannot perform its function. as it should be. [0003] Therefore, in an overheat protection circuit for preventing overheating, it is necessary to use a temperature detecting device capable of detecting an overheating state. This temperature detecting device adopts thermal fuse, but because the thermal fuse can not recover its original state after it is interrupted and...

AI Technical Summary

Problems solved by technology

[0012] However, as mentioned above, the electronic equipment overheating protection device using the above-mentioned thermistor can sense the above-mentioned overheating state and work only after the overloaded element is in an overheating state, so it cannot fundamentally prevent the occurrence of electronic equipment overheating

[0013] In addition, the overheat protection device for electronic equipment using a thermistor can only work in an overheated state, so it cannot interrupt the power supply when the supplied voltage is lower than the voltage necessary for the current.

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