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Linear variable resistance cut-off module and protector with linear variable resistance cut-off function

A linear and variable technology, used in emergency protection circuit devices, emergency protection circuit devices, electrical components, etc. for limiting overcurrent/overvoltage, which can solve problems such as slow response time, poor signal transmission, and slow response speed. , to achieve the effect of convenient use, widening working bandwidth and fast response speed

Inactive Publication Date: 2017-03-22
SHENZHEN ANXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For protectors that are connected in parallel, they have the following disadvantages: the protection is lost after a large load, that is, when the protector is damaged, it cannot prevent the impact of subsequent lightning strikes on the equipment, which may cause the equipment to be damaged before a new protector is replaced.
[0010] The series protector has the following disadvantages: (1) Slow response: The response time of the series protector is slow, usually at the ms level, which will cause the protected equipment to still be impacted by a small surge, causing cumulative damage , although it will not cause equipment damage, but it will shorten the service life of the equipment; (2) Narrow bandwidth and poor signal transmission: due to the use of series protectors, there are too many non-resistive devices, resulting in signal transmission performance Poor, can not meet the protection of higher frequency transmission lines in the future

Method used

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  • Linear variable resistance cut-off module and protector with linear variable resistance cut-off function
  • Linear variable resistance cut-off module and protector with linear variable resistance cut-off function
  • Linear variable resistance cut-off module and protector with linear variable resistance cut-off function

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Embodiment 1

[0057] Please refer to figure 2 , the present embodiment provides a linear variable resistance cut-off module, including: a first signal transmission main channel, a second signal transmission main channel, a first control circuit and a second control circuit; a first control circuit, a first signal transmission main channel The channel, the second control circuit and the second signal transmission main channel are connected in parallel with each other. The first signal transmission main channel is used for the transmission of the first signal; the second signal transmission main channel is used for the transmission of the second signal; the first control circuit is used to control the first signal transmission main channel to be in the conduction, variable resistance or cut-off state ; The second control circuit is used to control the second signal transmission main channel to be in a conduction, variable resistance or cut-off state. Here, the first signal is the signal tra...

Embodiment 2

[0066] Please refer to Figure 3-4 , this embodiment provides a protector with a linear rheostat cut-off function, the protector has two signal lines, signal line A and signal line B respectively, the protector specifically includes: a transient suppression branch and a discharge branch, It also includes: a first linear variable resistance closure module and a second linear variable resistance closure module; the first or second linear variable resistance closure module has the same structure as that of Embodiment 1, which will not be repeated here. Wherein, the input terminals of the first signal transmission main channel and the first control circuit are respectively connected to the input terminals of the discharge branch; the output terminals of the first signal transmission main channel and the first control circuit are respectively connected to the transient suppression branch The input terminals of the second signal transmission main channel and the second control circu...

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Abstract

The invention discloses a linear variable-resistance closure module and a protector with a linear variable-resistance closure function. The linear variable-resistance closure module comprises a first main signal transmission channel, a second main signal transmission channel, a first control and a second control circuit which are interconnected. The protector comprises a transient suppression branch circuit, a discharge branch circuit, a first linear variable-resistance closure module and a second linear variable-resistance closure module, wherein the first linear variable-resistance closure module or the second linear variable-resistance closure module is identical with the linear variable-resistance closure module in structure. Input ends of the first main signal transmission channel and the first control circuit are connected with an input end of the discharge branch circuit and an input end of the transient suppression branch circuit; input ends of the second main signal transmission channel and the second control circuit are connected with the input end of the transient suppression branch circuit and the input end of the discharge branch circuit. The linear variable-resistance closure module realizes the linear variable-resistance closure function and suppresses surge, so that equipment is protected from impact of the surge.

Description

technical field [0001] The invention relates to the technical field of lightning protection, in particular to a cut-off module and a protector in a surge suppression system. Background technique [0002] Transient voltage suppressor diode: Transient Voltage Suppressor, referred to as TVS; [0003] Gas discharge tube: referred to as GDT; [0004] Thermistor: PCT for short. [0005] In industrial control systems, signal communication lines (such as RS232 / 422 / 485 protocol, token ring and current ring) need to be equipped with a protector, which can effectively suppress the surge in the industrial network signal, which can minimize Signal interruptions caused by power surges in industrial control networks prevent equipment damage. [0006] In the prior art, conventional signal protectors can be divided into parallel type and series type according to the connection mode. [0007] For protectors connected in parallel, they have the following disadvantages: protection is lost a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04H02H9/06H02H9/02
Inventor 庞旭惠欲晓
Owner SHENZHEN ANXIN TECH