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Power source protector

A technology of power protection and AC power supply, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve the problems of increasing procurement costs and adding power protection systems, etc., and achieve cost saving, small size, The effect of accurate security protection

Inactive Publication Date: 2011-06-22
PROLIFIC TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional power protection devices can only protect one of the above-mentioned problems. If it is necessary to protect multiple power abnormalities at the same time, it is necessary to purchase a variety of power protection devices with different functions, which increases the purchase cost and construction. Difficulties with power protection systems

Method used

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Embodiment Construction

[0019] Please refer to figure 1 and figure 2 , which is a block diagram of a power protection device according to a preferred embodiment of the present invention. The power protection device 100 is coupled to the AC power supply and the electronic appliance 180 , and is used to cut off the power supply to protect the electronic appliance 180 when an abnormal power supply occurs. The power protection device 100 includes a power switch unit 110 , a surge protection unit 120 , a leakage current protection unit 140 , and an overcurrent protection unit 160 . The power switch unit 110 is coupled to the AC power supply AC, and when the power switch unit 110 receives the disconnection control signal C, it cuts off the power supply of the AC power supply AC.

[0020] The surge protection unit 120 is coupled to the AC power supply AC and the power switch unit 110 to prevent surges. The surge protection unit 120 receives the voltage of the AC power supply AC, compares the voltage of ...

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Abstract

The invention discloses a power supply protection device includes a switch unit for switching off AC supply in line with the current break control signal, a burst wave protection unit for outputting the current break control signal when burst wave occurs, a current leakage protection unit for outputting the current break control signal during current leakage, and an overcurrent protection unit for outputting the currentbreak control signal based on the current value or energy when overcurrent happens. This invention has the functions of burst wave, current leakage and overcurrent protections, as compared with traditional protection device, the power supply protection device has smaller volume and lower cost for providing more accurate, safer protection by overcurrent detection based on energy.

Description

technical field [0001] The invention relates to a power protection device. Background technique [0002] With the rapid development of technology, the daily life of ordinary people is increasingly relying on electrical appliances, such as computers, washing machines, microwave ovens, air conditioners and refrigerators, etc., which bring great convenience to the people and improve the quality of life. However, water can carry a boat, and it can also overturn it. As the power consumption increases, the possible danger is also greater. Generally, abnormal phenomena in electricity consumption include overcurrent (overload), leakage current (leakage) and surge (surge). Overcurrent means that the total current of the electrical appliances used is too large, resulting in the danger of wires catching fire. Leakage current often occurs in high-humidity environments, such as bathrooms, etc., causing the current to flow through the human body and cause electric shock. Generally, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/00
Inventor 许家彰陈彦仲
Owner PROLIFIC TECH INC
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