Shutdown circuit based on transistor self-locking and device comprising shutdown circuit

Abstract

The invention discloses a shutdown circuit based on transistor self-locking and a device comprising the shutdown circuit. The shutdown circuit comprises a backward stage self-locking circuit for converting a level of the output end into a first level and keeping the first level when a preset triggering signal is received and outputting a power control signal of the first level from the output end, and a power connection unit which is provided with a control end connected to the output end of the backward stage self-locking circuit and is used for disconnecting or connecting the device comprising the shutdown circuit and an external power supply for supplying power to the device by judging whether the power control signal received by the control end is the first level or a second level, wherein after the backward stage self-locking circuit keeps the level of the output end to be the first level, the level of the output end of the backward stage self-locking circuit is changed into the second level by restarting the power supply of the backward stage self-locking circuit, and the power connection unit connects the device and the power supply.

Description

technical field [0001] The invention relates to a shut-down circuit, more specifically, to a shut-down circuit based on transistor self-lock to disconnect the power supply connection through the self-lock of the transistor. Background technique [0002] At present, most communication devices are operated in an unattended computer room. Due to the aging of the device or the failure of the heat dissipation system, it is easy to cause the temperature of the entire device to be too high or even cause a fire. At present, light alarm, sound alarm and alarm are usually adopted in order to solve this problem. Among them, the light alarm is that the device controls the LED indicator light, which indicates abnormality through color change or flashing at a certain frequency; the sound alarm is that when the device is abnormal, the device controls the buzzer to emit high-decibel sound waves to attract the attention of the staff on duty; remote alarm For the device to transmit the alarm...

AI Technical Summary

Problems solved by technology

[0003] Although the current alarm method is simple and direct, its shortcomings are also obvious.

The first type of light alarm can only be found by checking the device in the computer room; the second type of sound alarm can only be heard in the computer room, but the noise in the computer room is generally loud, and the buzzer’s sound is not easy to hear; The third type of remote alarm is easier to find, but there are also problems of human negligence and untimely handling

[0004] If the above alarm is not received and the failure is not dealt with in time, it is very likely to cause an accident and cause huge losses

Images