Full-automatic electronic and electrical appliance overvoltage protection circuit
A technology for overvoltage protection circuits and electronic appliances, which is applied in the direction of emergency protection circuit devices, protection that responds to overvoltages, emergency protection devices that automatically disconnect, etc. Complicated and other issues, to achieve the effect of strong practicability, avoid lightning strikes, and simple circuit structure
Inactive Publication Date: 2017-06-20
郑州市电子信息工程学校
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Problems solved by technology
[0003] The purpose of the present invention is to provide a fully automatic overvoltage protection circuit for electronic appliances to solve the problem that the circuit of the existing overvoltage protector proposed in the above-mentioned background technology is complicated and the function of automatically restoring power is difficult to realize
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[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0014] see Figure 1-3 , the present invention provides a technical solution: a fully automatic overvoltage protection circuit for electronic appliances, including an input protection circuit 1, the output end of the input protection circuit 1 is electrically connected to the input end of the input voltage detection circuit 3, and the input The output end of the voltage detection circuit 3 is electrically connected to the No. 2 input port of the voltage compar...
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The invention discloses a fully automatic electronic appliance overvoltage protection circuit in the technical field of overvoltage protection, comprising an input protection circuit, an output end of the input protection circuit is electrically connected to an input end of an input voltage detection circuit, and the input voltage detection circuit The output terminal of the circuit is electrically connected to the second input port of the voltage comparison circuit, and the input voltage detection circuit is used to detect the access voltage. The voltage range value that the component can withstand is compared with the input voltage value. If the input voltage value is within the voltage range value that the input electrical component can withstand, the transmission gate S connects the lines of the remaining electrical components D, otherwise it is in the ground state, the line The structure is simple, and at the same time, the collection and comparison of voltage are completed intelligently, and the line can be automatically connected, and the practicability is strong.
Description
technical field [0001] The invention relates to the technical field of overvoltage protection, in particular to a fully automatic overvoltage protection circuit for electronic appliances. Background technique [0002] The overvoltage protector of electronic appliances cuts off the line when the power supply voltage of the protected line is higher than a certain value; The overvoltage protector only has the function of automatically disconnecting the power supply, but not the function of automatically restoring the power supply, so there is still room for improvement in the overvoltage protector in the prior art, and the circuit structure of the overvoltage protector in the prior art is complicated, Many components are used and the cost is high, which is not conducive to popularization and promotion. Therefore, I propose a fully automatic overvoltage protection circuit for electronic appliances. Contents of the invention [0003] The purpose of the present invention is to ...
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Login to View More IPC IPC(8): H02H3/20H02H3/06
CPCH02H3/20H02H3/066
Inventor 涂冰峰邝爱华张靖辉吴廷鑫
Owner 郑州市电子信息工程学校