CN208955654U - A kind of signal wire nuclear electromagnetic pulse protector - Google Patents
A kind of signal wire nuclear electromagnetic pulse protector Download PDFInfo
- Publication number
- CN208955654U CN208955654U CN201821930229.5U CN201821930229U CN208955654U CN 208955654 U CN208955654 U CN 208955654U CN 201821930229 U CN201821930229 U CN 201821930229U CN 208955654 U CN208955654 U CN 208955654U
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- input terminal
- current
- electromagnetic pulse
- limiting resistance
- filter
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Abstract
The utility model relates to a kind of electronic technology field more particularly to a kind of signal wire nuclear electromagnetic pulse protectors.Pulse protective device including installation interior of shell is arranged in, pulse protective device is by input terminal, prime protective unit, filter unit and output end are sequentially connected, input terminal and input terminal have anode and cathode, gas-discharge tube G is equipped between the anode and cathode of input terminal, the grounding electrode of gas-discharge tube G is grounded, the anode of input terminal is connected with current-limiting resistance R1, the cathode of input terminal is connected with current-limiting resistance R2, the output end of current-limiting resistance R1 connects pin with the No.1 of TVS array and is connected, the input terminal of current-limiting resistance R2 is connected with No. four company's pins of TVS array, TVS array ground electrode ground connection, No. five pins and No. eight pins of TVS array are connected with LC filter.One of the utility model signal wire nuclear electromagnetic pulse protector discharge current is big, residual voltage is low, high-frequency harmonic is few, can protect nuclear electromagnetic pulse, Lightning Electromagnetic Pulse.
Description
Technical field
The utility model relates to a kind of electronic technology fields, and more specifically, the utility model relates to a kind of signal line cores
Electromagnetic pulse protector.
Background technique
Electromagnetic impulse radiation be it is a kind of by natural (such as sunspot aggravating activities) or it is artificial (as ignite ELECTROMAGNETIC BOMB or
Person's nuclear bomb) generate violent electromagnetic pulse signal.Electromagnetic impulse radiation has intensity is high, action time is fast, covering frequence is wide etc.
Feature.
To electromagnetic pulse waveform the study found that its waveform rising edge is very short, usually only a few ns, and intensity is big, peak
Value is more than 5kA.When the electromagnetic pulse percussion of this waveform is to in electric line or equipment, even if equipment is mounted with to take shelter from the thunder
Device, due to the speed of electromagnetic pulse be significantly larger than arrester reaction speed (lightning stroke impulse speed be us grade, electromagnetic pulse speed
Degree is 1000 times of lightning stroke impulse speed), arrester can not also react in time and make protection movement, this makes the electricity consumption of rear end
Directly facing the impact of high intensity EMP, the impaired risk of system overload is high for route and equipment.
In addition, the frequency coverage of electromagnetic pulse is far longer than lightning stroke pulse, the dot frequency that partly declines for pulse of being struck by lightning
500Hz, and the dot frequency that partly declines of electromagnetic pulse is 1MHz.Therefore, what electromagnetic pulse generated is not only transient state high energy impact events
Problem, but also high frequency, high-intensitive electromagnetic interference problem are generated simultaneously, under this impact, system not only faces overcurrent wind
Danger, will also solve the problems, such as the electromagnetic interference shielding of system sensitive equipment.The characteristics of nuclear electromagnetic pulse make it to the coupling of system and
Interference performance is very strong, and especially high frequency harmonic components are easily coupled to late-class circuit and interfere.
Utility model content
For the deficiency in the presence of the prior art, one of the utility model signal wire nuclear electromagnetic pulse protector peace
Fill that easy to use, loss is small, the response time is fast, discharge current is big, residual voltage is low, high-frequency harmonic is few, it can be effectively to nuclear electromagnetic arteries and veins
Punching, Lightning Electromagnetic Pulse are protected.
Including installation shell and the pulse for installing interior of shell is arranged in a kind of signal wire nuclear electromagnetic pulse protector
Protective device, wherein the pulse protective device is sequentially connected by input terminal, prime protective unit, filter unit and output end,
The input terminal and output end have anode and cathode, and the prime protective unit includes including gas-discharge tube G, current-limiting resistance
R1, current-limiting resistance R2 and TVS array, the gas-discharge tube G connect between the anode and cathode of input terminal and are grounded, the limit
One end of leakage resistance R1 is connected with the anode of input terminal, and the current-limiting resistance R1 is the No.1 pin phase of the other end with TVS array
Even, the one end the resistance R2 is connected with the cathode of input terminal, the other end of the current-limiting resistance R2 and No. four pins of TVS array
It is connected, two, No. three pins in the TVS array are grounded after being shorted, and six, No. seven pins in the TVS array are shorted it
After be grounded, No. five pins and No. eight pins of the TVS array are connected with the filter unit.
Preferably, the filter unit includes common-mode filter and the punching filter being connected with the common-mode filter,
The punching filter ground connection.
Preferably, the input terminal, prime protective unit, filter unit pass through circuit board with output end and connect.
Preferably, the both ends of the installation shell are equipped with the end cap of insulating materials production.
Compared with the prior art, the utility model has the following beneficial effects: one of the utility model signal line core
Electromagnetic pulse protector carries out shielding isolation processing to nuclear electromagnetic pulse first with its mounting means, prevents nuclear electromagnetic pulse
Two secondary couplings.Then, protector first lets out electromagnetic pulse energy by the combination of discharge tube, current-limiting resistance, TVS array
It puts.Since device response time itself and electromagnetic pulse rising edge ascending time mismatch cause nuclear electromagnetic pulse to protect by prime
There are also biggish residual voltages after circuit, we add LC low-pass filter circuit behind prime protection circuit, utilize inductance, electricity
The peak absorbing characteristic of appearance absorbs residual voltage, buffered.Meanwhile LC filter circuit rear end uses punching filter
Secondary shield isolation is carried out, the filter circuit construction of this form can effective filter out high-frequency harmonic and prevent the coupling of high-frequency harmonic
It closes.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model；
Wherein, 1, circuit board；2, current-limiting resistance；3, TVS array；4, common-mode filter；5, gas-discharge tube G；6, punching
Filter；7, shell is installed；8, end cap.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing utility model are easy to understand, below
In conjunction with being specifically illustrating, the utility model is further described.
It please refers to shown in Fig. 1 and Fig. 2, a kind of signal wire nuclear electromagnetic pulse protector, including installation shell 7 and setting are in institute
State the pulse protective device inside installation shell 7, wherein the pulse protective device is by input terminal, prime protective unit, filtering
Unit and output end are sequentially connected, and the input terminal and output end have anode and cathode, and the prime protective unit includes packet
Include gas-discharge tube G5, current-limiting resistance R1, current-limiting resistance R2 and TVS array 3, the gas-discharge tube G5 connect input terminal just
It between pole and cathode and is grounded, one end of the current-limiting resistance R1 is connected with the anode of input terminal, and the current-limiting resistance R1 is another
One end is connected with the No.1 pin of TVS array 3, and the one end the resistance R2 is connected with the cathode of input terminal, the current-limiting resistance R2
The other end be connected with No. four pins of TVS array 3, two, in the TVS array 3 No. three pin be shorted after be grounded, it is described
Ground connection after six, No. seven pins in TVS array 3 are shorted, No. five pins of the TVS array 3 and No. eight pins and the filter
Wave unit is connected.One of the utility model signal wire nuclear electromagnetic pulse protector is by gas-discharge tube G5, current limliting electricity
Resistance 2, the combination of TVS array 3 first release to electromagnetic pulse energy.Due to device response time itself and electromagnetic pulse forward position
Rise time mismatch leads to nuclear electromagnetic pulse, and there are also biggish residual voltages after prime protection circuit, protect in prime single
It is first to add filter unit below, residual voltage is absorbed using the peak absorbing characteristic of inductance, capacitor, buffered.No
Only install and use easily, loss is small, the response time is fast, discharge current is big, residual voltage is low, high-frequency harmonic is few, can be effectively to core
Electromagnetic pulse, Lightning Electromagnetic Pulse are protected.
Further, referring to figure 2. shown in, the filter unit include common-mode filter 4 and with the common-mode filter 4
Connected punching filter 6, the punching filter 6 are grounded.Meanwhile it being equipped with punching filter 6 in LC filter circuit rear end,
Secondary shield isolation effectively can be carried out to residual voltage, the filter circuit construction of this form can effective filter out harmonic high frequency
Wave and the coupling for preventing high-frequency harmonic.
Further, the input terminal, prime protective unit, filter unit pass through circuit board with output end and connect.Respectively
Connection between a component is compact, and is not easy the situation for open circuit occur.
Further, it please refers to shown in Fig. 1, the both ends of the installation shell 7 are equipped with the end cap 8 of insulating materials production.It can
Effectively to increase the reliability of protector.
Above description is merely a prefered embodiment of the utility model, on the protection scope of the utility model is not limited in
Embodiment is stated, all technical solutions for belonging to the utility model principle belong to the protection scope of the utility model.For this
For the technical staff in field, several improvement carried out under the premise of not departing from the principles of the present invention, these improvement
It should be regarded as the protection scope of the utility model.
Claims (4)
1. a kind of signal wire nuclear electromagnetic pulse protector, anti-including installation shell and the pulse that the installation interior of shell is arranged in
Protection unit, it is characterised in that: the pulse protective device by input terminal, prime protective unit, filter unit and output end successively
Connection, the input terminal and output end have anode and cathode, and the prime protective unit includes gas-discharge tube G, current limliting electricity
R1, current-limiting resistance R2 and TVS array are hindered, the gas-discharge tube G connects between the anode and cathode of input terminal and is grounded, described
One end of current-limiting resistance R1 is connected with the anode of input terminal, and the current-limiting resistance R1 is the No.1 pin of the other end Yu TVS array
It is connected, the one end the resistance R2 is connected with the cathode of input terminal, and the other end of the current-limiting resistance R2 draws with No. four of TVS array
Foot is connected, and two, No. three pins in the TVS array are grounded after being shorted, and six, No. seven pins in the TVS array are shorted
It is grounded later, No. five pins and No. eight pins of the TVS array are connected with the filter unit.
2. a kind of signal wire nuclear electromagnetic pulse protector according to claim 1, it is characterised in that: the filter unit packet
The punching filter for including common-mode filter and being connected with the common-mode filter, the punching filter ground connection.
3. a kind of signal wire nuclear electromagnetic pulse protector according to claim 1, it is characterised in that: the input terminal, preceding
Grade protective unit, filter unit pass through circuit board with output end and connect.
4. a kind of signal wire nuclear electromagnetic pulse protector according to claim 1, it is characterised in that: the installation shell
Both ends are equipped with the end cap of insulating materials production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930229.5U CN208955654U (en) | 2018-11-22 | 2018-11-22 | A kind of signal wire nuclear electromagnetic pulse protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930229.5U CN208955654U (en) | 2018-11-22 | 2018-11-22 | A kind of signal wire nuclear electromagnetic pulse protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955654U true CN208955654U (en) | 2019-06-07 |
Family
ID=66744970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821930229.5U Active CN208955654U (en) | 2018-11-22 | 2018-11-22 | A kind of signal wire nuclear electromagnetic pulse protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208955654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445142A (en) * | 2019-08-27 | 2019-11-12 | 四川三普科技有限公司 | A kind of strong electromagnetic pulse multistage protection device with detecting display function |
-
2018
- 2018-11-22 CN CN201821930229.5U patent/CN208955654U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445142A (en) * | 2019-08-27 | 2019-11-12 | 四川三普科技有限公司 | A kind of strong electromagnetic pulse multistage protection device with detecting display function |
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