CN204316083U - Transmitter lightning protection device - Google Patents
Transmitter lightning protection device Download PDFInfo
- Publication number
- CN204316083U CN204316083U CN201420800454.2U CN201420800454U CN204316083U CN 204316083 U CN204316083 U CN 204316083U CN 201420800454 U CN201420800454 U CN 201420800454U CN 204316083 U CN204316083 U CN 204316083U
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- CN
- China
- Prior art keywords
- resistance
- piezo
- transmitter
- feedthrough capacitor
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of transmitter lightning protection device, comprise the lightning protection device suspending and be arranged on above transmitter amplifying circuit, lightning protection device comprises piezo-resistance (RV1), piezo-resistance (RV2), feedthrough capacitor (C1), feedthrough capacitor (C2), transient voltage suppressor (D1), transmitter input and the output of transmitter are connected piezo-resistance (RV1) respectively, piezo-resistance (RV2), piezo-resistance (RV1), piezo-resistance (RV2) connects the two poles of the earth of transient voltage suppressor (D1) respectively, the two poles of the earth of transient voltage suppressor (D1) also respectively with feedthrough capacitor (C1), feedthrough capacitor (C2) connects, piezo-resistance (RV1), piezo-resistance (RV2), feedthrough capacitor (C1), feedthrough capacitor (C2) be earth connection respectively, have the protective circuit response time short, power of releasing is large, and cost is low, volume is little, lightweight, the advantage that can be integrally formed with transmitter.
Description
Technical field
The utility model relates to a kind of transmitter lightning protection device.
Background technology
Lightning Electromagnetic Pulse is a kind of strong electromagnetic source, it invades transmitter internal circuit with different approach, and the lighter disturbs the normal operation of transmitter, heavy then transmitter was lost efficacy, particularly without the severe occasion such as oil recovery field, field of lightning arrester, the lightning protection of transmitter is particularly important.There is thunderstorm hour, can produce up to millions of volt surge voltage, temperatures as high 20000 DEG C, because discharging current non-uniform change in time forms conducting lightning currents pulse, the average amplitude of current impulse is foretold to hundreds of kilo-ampere for number, the duration be microsecond to Millisecond, lightning channel can reach hundreds of rice to tens kilometer range, space radiation electromagnetic wave towards periphery while lightning, its frequency spectrum is about 1Hz-10MHz.General transmitter, often resistance to overvoltage and overcurrent capability poor, dielectric strength is low, and the electromagnetic interference for thunder and lightning is responsive.
Utility model content
The utility model provides a kind of transmitter lightning protection device solved the problem.
The utility model adopts following technical scheme:
Transmitter lightning protection device, it is characterized in that, suspend the lightning protection device be arranged on above transmitter amplifying circuit, lightning protection device comprises piezo-resistance (RV1), piezo-resistance (RV2), feedthrough capacitor (C1), feedthrough capacitor (C2), transient voltage suppressor (D1), transmitter input and the output of transmitter are connected piezo-resistance (RV1) respectively, piezo-resistance (RV2), piezo-resistance (RV1), piezo-resistance (RV2) connects the two poles of the earth of transient voltage suppressor (D1) respectively, the two poles of the earth of transient voltage suppressor (D1) also respectively with feedthrough capacitor (C1), feedthrough capacitor (C2) connects, piezo-resistance (RV1), piezo-resistance (RV2), feedthrough capacitor (C1), feedthrough capacitor (C2) be earth connection respectively.
This technology adds a lightning protection device after traditional transmitter amplifying circuit, and adopts (namely there is certain distance between lightning protection device and the amplifying circuit) mode above transmitter amplifying circuit of suspension to install.In this technology, piezo-resistance forms the first order, and transient voltage suppressor is the second level, and the third level is punching filter capacitor.
When thunder and lightning hits near transmission signal line, the induced voltage of holding wire may up to thousands of volt, lightning protection device can protect transmitter not by lightning impulse, when this is owing to being subject to electromagnetic interference impact when holding wire, discharged over the ground by the piezo-resistance of the first order, what utilize is the precipitous non-linear to voltage of piezo-resistance, thus the overvoltage caused by lightning impulse and overcurrent can be discharged, voltage is made to be limited in the later reference voltage level of piezo-resistance action (in required scope), can require to select suitable reference voltage and discharge capacity (tolerance 8/20us impulse current ability) according to lightning protection and transmitter to piezo-resistance.
Cause due to phase shift between holding wire transfinite voltage time; this voltage can be limited in below safe voltage by the transient voltage suppressor of second level protective loop; transient voltage suppressor surge capacity is high; output impedance is low; selectable voltage wide ranges; response time is short, therefore can be used on the occasion of induction lightening and long-distance transmission line existence harm electronic circuit.
Third level electric capacity strobes, and selects feedthrough capacitor herein; Feedthrough capacitor has minimum inductance, and comparable conventional capacitive obtains lower impedance, suppresses high-frequency percussion.
The utility model has the advantages that: 1) this lightning protection device played a role before thunder and lightning electromagnetic interference is arrived, release big current and high voltage, and the protective circuit response time is short, and power of releasing is large; 2) in suppression thunder and lightning magnetic disturbance process, this device is not damaged; 3) this lightning protection device cost is low, volume is little, lightweight, can be integrally formed with transmitter.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, transmitter lightning protection device, suspend the lightning protection device be arranged on above transmitter amplifying circuit, lightning protection device comprises piezo-resistance RV1, piezo-resistance RV2, feedthrough capacitor C1, feedthrough capacitor C2, transient voltage suppressor D1, the transmitter input of transmitter is connected piezo-resistance RV1, piezo-resistance RV2 respectively with output, piezo-resistance RV1, piezo-resistance RV2 connect the two poles of the earth of transient voltage suppressor D1 respectively, and the two poles of the earth of transient voltage suppressor D1 are also connected with feedthrough capacitor C1, feedthrough capacitor C2 respectively; Piezo-resistance RV1, piezo-resistance RV2, feedthrough capacitor C1, feedthrough capacitor C2 earth connection respectively.
Claims (1)
1. transmitter lightning protection device, it is characterized in that, suspend the lightning protection device be arranged on above transmitter amplifying circuit, lightning protection device comprises piezo-resistance RV1, piezo-resistance RV2, feedthrough capacitor C1, feedthrough capacitor C2, transient voltage suppressor D1, the transmitter input of transmitter is connected piezo-resistance RV1, piezo-resistance RV2 respectively with output, piezo-resistance RV1, piezo-resistance RV2 connect the two poles of the earth of transient voltage suppressor D1 respectively, and the two poles of the earth of transient voltage suppressor D1 are also connected with feedthrough capacitor C1, feedthrough capacitor C2 respectively; Piezo-resistance RV1, piezo-resistance RV2, feedthrough capacitor C1, feedthrough capacitor C2 earth connection respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800454.2U CN204316083U (en) | 2014-12-17 | 2014-12-17 | Transmitter lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800454.2U CN204316083U (en) | 2014-12-17 | 2014-12-17 | Transmitter lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316083U true CN204316083U (en) | 2015-05-06 |
Family
ID=53138378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420800454.2U Expired - Fee Related CN204316083U (en) | 2014-12-17 | 2014-12-17 | Transmitter lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316083U (en) |
-
2014
- 2014-12-17 CN CN201420800454.2U patent/CN204316083U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 212, room 255086, block C, hi tech Pioneer Park, 135 hi tech Zone, Zibo, Shandong Patentee after: Shandong Bai test sensor Polytron Technologies Inc Address before: 818, room 255085, building D, Gao Cheng garden, No. 135, high tech Zone, Zibo, Shandong Patentee before: Shandong Baice Instrument Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20171217 |