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Overvoltage and undervoltage protection device with function of displaying overvoltage or undervoltage

An under-voltage protection and over-voltage technology, applied in the direction of automatic disconnection of emergency protection devices, emergency protection circuit devices, circuit devices, etc. problem, to achieve the effect of protecting electrical equipment

Inactive Publication Date: 2015-04-29
无锡华阳科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] At present, circuit protectors have been widely used. The circuit protectors installed in them can effectively avoid the influence of high voltage or low voltage on the circuit. At present, there are protective devices with both overvoltage and undervoltage protection on the market, but such The device cannot display whether the grid voltage is overvoltage or undervoltage, and cannot understand the power supply voltage of the grid

Method used

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  • Overvoltage and undervoltage protection device with function of displaying overvoltage or undervoltage

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Embodiment Construction

[0008] combine figure 1 As shown, the present invention includes: a power supply circuit 100, an overvoltage detection unit 200, an undervoltage detection unit 300, an OR gate output unit 400, a delay output unit 500, a power switch unit 600, an overvoltage display unit 700, and an undervoltage display unit 800, of which:

[0009] The power supply circuit 100 is connected to the overvoltage detection unit 200 and the undervoltage detection unit 300 respectively, and is used to supply power to the overvoltage detection unit and the undervoltage detection unit, and to provide a reference voltage to the detection unit, the OR gate output unit and the delay output unit;

[0010] The overvoltage detection unit 200 is used to determine the voltage level input by the power supply circuit 100 and detect its overvoltage signal. When the detected voltage is higher than the voltage value specified by the national standard, the overvoltage detection unit 200 will output High-level signa...

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Abstract

The invention provides an overvoltage and undervoltage protection device with a function of displaying overvoltage or undervoltage. The overvoltage and undervoltage protection device comprises a power supply circuit, an overvoltage detecting unit, an undervoltage detecting unit, an overvoltage display unit, an undervoltage display unit, an or gate output unit, a delay output unit and a power switch unit. When an overvoltage or undervoltage condition is detected by the device, controllable silicon is triggered to be conducted, and then a power supply is cut off to realize the effect of protecting electronic equipment; users can timely know a grid state and grid power supply quality through the overvoltage display unit and the undervoltage display unit, so that a remarkable progressive significance is realized.

Description

technical field [0001] The invention relates to the field of power protection switches, in particular to an overvoltage and undervoltage protection device for judging overvoltage or undervoltage. Background technique [0002] With the continuous improvement of people's quality of life, electronic and electrical products have entered thousands of households, and the safety awareness of personal and equipment protection is gradually strengthening, especially the functions of electronic products used now are becoming more and more important. Electronic products The field of application is becoming more and more important, and the protection of equipment is also becoming more and more important. At the same time, the requirements for various protectors are also increasing. [0003] At present, circuit protectors have been widely used. The circuit protectors installed in them can effectively avoid the influence of high voltage or low voltage on the circuit. At present, there are ...

Claims

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Application Information

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IPC IPC(8): H02H3/04
Inventor 朱荣惠徐荣灿张松建
Owner 无锡华阳科技有限公司
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