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Thunder filter and electronic device

A technology of electronic equipment and filters, which is applied to electrical components, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc., can solve the problems of poor filtering effect and limitation of lightning current, and achieve low cost, The effect of simple design and great application value

Active Publication Date: 2014-02-12
SHENZHEN YZ TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiment of the present invention is to provide a lightning filter, which aims to solve the problem of lightning current filtering in the EMC filter circuit used as a lightning current filter due to the limitation of the capacity and withstand voltage value of the capacitor used in the prior art. The problem of poor performance

Method used

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  • Thunder filter and electronic device
  • Thunder filter and electronic device
  • Thunder filter and electronic device

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] Aiming at the problem that the existing EMC filter circuit is not suitable for lightning filtering due to the limitation of the capacitor itself, the lightning filter proposed in the embodiment of the present invention uses a nonlinear voltage limiting element to replace the existing capacitor.

[0021] figure 2 The circuit principle of the electronic device provided by the embodiment of the present invention is shown, and for the convenience of description, only the part related to the embodiment of the present invention is shown.

[0022] The electronic equipment provided by the embodime...

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Abstract

A lightning filter and electronic equipment are provided. The lightning filter (1) comprises: an inductor connected in series with the transmission line inlet wire of a protected load circuit (2); and a non-linear voltage limiting element connected in parallel between two transmission line inlet wire of the protected load circuit. Because lightning filtering is achieved by the non-linear voltage limiting element instead of the existing capacitor of a LC filter, relative to the capacitor, the filtering effect of the non-linear voltage limiting element is not influenced by its manufacturing process and parameters, and it has great application value, simple design and low cost.

Description

technical field [0001] The invention belongs to the technical field of lightning protection, and in particular relates to a lightning filter and electronic equipment not dependent on capacitance. Background technique [0002] Lightning disaster is one of the ten most serious natural disasters announced internationally. Every year, lightning disasters occur frequently and involve a wide range of areas, posing a serious threat to the lives and property of the general public. Especially in electronic equipment, in order to ensure the safe operation of the equipment, the electronic equipment needs to be protected against lightning. [0003] A lightning protection circuit provided in the prior art utilizes a surge protector to discharge lightning current into the ground. Specifically, the circuit is a surge protector connected in parallel between the electrical signal input terminal of the protected electronic equipment and the ground. When the lightning current flowing into th...

Claims

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Application Information

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IPC IPC(8): H02H9/04
CPCH02H9/04
Inventor 张庭炎栾海元
Owner SHENZHEN YZ TECH