Power outage protector

Abstract

The invention relates to a circuit protection device, in particular to a power outage protector. The power outage protector comprises a resistance-capacitance step-down circuit, a triac, and a singlechip. The input end of the resistance-capacitance step-down circuit and the input end of a load circuit are in a parallel connection. The triac and the load circuit are in series connection. The output end of the resistance-capacitance step-down circuit supplies the singlechip with power. A first input / output port of the singlechip and a switch are in series connection, and then the first input / output port is connected with the negative electrode of the output end of the resistance-capacitance step-down circuit. A second input / output port of the singlechip and resistance 5 are in series connection, and then the second input / output port is connected with the control end of the triac. A third input / output port of the singlechip and resistance 1 are in series connection, and then the third input / output port is connected with the negative electrode of the input end of the load circuit. The invention provides the power outage protector with accurate judgment and rapid response, and the power outage protector cannot cause interference to the power circuit of electric equipment as effectively protect the safety of the electric equipment.

Description

technical field [0001] The invention relates to a circuit protection device, in particular to a power cut protector. Background technique [0002] When the motor or other electrical equipment is in operation, the plug falls off, the power grid fails or other reasons cause the motor to lose power, the operator may not turn off the motor switch in time due to various reasons, and when the power grid suddenly resumes power supply, the motor Sudden power on, the motor will run by itself. Without the operator's prediction, the sudden operation of the motor will endanger personal and property safety. At the same time, the instantaneous peak current when the motor resumes power supply is very large, which will cause certain damage to the equipment, especially the frequent intermittent power-on and power-off during circuit failure will cause a huge impact on the equipment and cause serious damage to the equipment. [0003] In order to avoid the above-mentioned hidden dangers, some...

AI Technical Summary

Problems solved by technology

The technical defects of the present invention are: (1) the period of the protection device is connected in series with the electrical equipment, which interferes with the normal operation of the electrical equipment; The response time is long, the reliability of the circuit is poor, and it cannot provide effective protection in the case of rapid power-off and power-on; (3) Misjudgment will be made when the user actively cuts off the power and the power is cut off due to a non-power supply line failure, which brings inconvenience to the user's operation

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