CN203434614U - Three-in-one overvoltage protection device - Google Patents
Three-in-one overvoltage protection device Download PDFInfo
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- CN203434614U CN203434614U CN201320480409.9U CN201320480409U CN203434614U CN 203434614 U CN203434614 U CN 203434614U CN 201320480409 U CN201320480409 U CN 201320480409U CN 203434614 U CN203434614 U CN 203434614U
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- protective circuit
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- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims description 66
- 238000002955 isolation Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses a three-in-one overvoltage protection device, which comprises a power supply overvoltage protection circuit, a control system overvoltage protection circuit and an SDI transmission system overvoltage protection circuit. The galvanically-isolated crosstalk interface output end of the power supply overvoltage protection circuit, the galvanically-isolated crosstalk interface output end of the control system overvoltage protection circuit, and the galvanically-isolated crosstalk interface output end of the SDI transmission system overvoltage protection circuit are connected together and then are connected with an earth screen. According to the technical scheme of the utility model, the power supply function, the control function and the SDI signal lightning-protection function are effectively integrated together, so that the usage of the device for users is facilitated. Meanwhile, the device is respectively provided with three-stage protection mechanisms, namely a pre-stage lightning current discharging main channel, a mid-stage decoupling protection mechanism and a post-stage terminal precise protection mechanism, so that the throughput of the lightning protection device is improved. Therefore, the safe operation of the system is ensured.
Description
Technical field
The utility model relates to a kind of excess voltage preventer, refers in particular to a kind of three-in-one excess voltage preventer.
Background technology
High speed signal lightning protection is to follow universal, the development of modern electronic technology, information technology and the newer industry that is derived.Birth and development along with new electronic component; the high speed development of electric power and information industry; electric power, railway, oil, communication, airport, national defence, finance etc. also present high speed development trend to the demand of meticulous lightning protection component; especially in message transmitting procedure; siganl thunder-proof device is also had higher requirement simultaneously, and protective capability is strong, simple and reliable for structure, be convenient to safeguard etc. possesses equal importance with transmission characteristic.
Utility model content
The utility model embodiment technical problem to be solved is, a kind of three-in-one excess voltage preventer is provided, the defect that it can solve, and the function singleness that exists in prior art, protective capability are strong not, complex structure and inconvenience are safeguarded.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of three-in-one excess voltage preventer, comprise overvoltage of power supply protection circuit, control system overvoltage protection circuit and SDI transmission system overvoltage protection circuit, the isolation current potential of described overvoltage of power supply protection circuit is played a reversed role to disturb the isolation current potential of output, control system overvoltage protection circuit to play a reversed role to disturb output and the isolation current potential of SDI transmission system overvoltage protection circuit to play a reversed role and is disturbed output to be connected to be afterwards connected with earth mat.
Further, described overvoltage of power supply protection circuit comprises the power supply prime master telegram in reply road of releasing, decoupling level protective circuit in the middle of the first power supply, the accurate protective circuit of decoupling level protective circuit and power supply rear class in the middle of second source, the release first end on telegram in reply road of described power supply prime master is connected with the first end of the described first level of decoupling in the middle of power supply protective circuit with the first power input respectively, release second end on telegram in reply road of described power supply prime master is connected with the first end of decoupling level protective circuit in the middle of second source input and described second source respectively, the first end of the accurate protective circuit of described power supply rear class is connected with the first power output end with the second end of decoupling level protective circuit in the middle of described the first power supply respectively, the second end of the accurate protective circuit of described power supply rear class is connected with second source output with the second end of decoupling level protective circuit in the middle of described the first power supply respectively, the release isolation current potential on telegram in reply road of described power supply prime master is played a reversed role and is disturbed output to be connected with earth mat.
Further, the described power supply prime master telegram in reply road of releasing comprises the first lightning protection fuse, the second lightning protection fuse, the first piezo-resistance, the second piezo-resistance, the first discharge tube and the second discharge tube, in the middle of described the first power supply, decoupling level protective circuit comprises the first inductance, in the middle of described second source, decoupling level protective circuit comprises the second inductance, the accurate protective circuit of described power supply rear class comprises a TVS pipe, the first end of described the first lightning protection fuse is connected with the first end of described the first inductance with described the first power input respectively, the second end of described the first lightning protection fuse is connected after described the first piezo-resistance and is connected with the first end of described the first discharge tube, the second end of described the first discharge tube is connected with the first end of described the second discharge tube, the second end of described the second discharge tube is connected after the second end of described the second piezo-resistance and is connected with the first end of described the second lightning protection fuse, the second end of described the second lightning protection fuse is connected with the first end of described the second inductance with described second source input respectively, the second end of described the first inductance is connected with the first end of a described TVS pipe with described the first power output end respectively, the second end of a described TVS pipe is connected with described second source output with the second end of described the second inductance respectively.
Further, described control system overvoltage protection circuit comprises the control signal prime master telegram in reply road of releasing, decoupling level protective circuit in the middle of the first control signal, the accurate protective circuit of decoupling level protective circuit and control signal rear class in the middle of the second control signal, the release first end on telegram in reply road of described control signal prime master is connected with the first end of the described first level of decoupling in the middle of control signal protective circuit with the first control signal input respectively, release second end on telegram in reply road of described control signal prime master is connected with the first end of the described second level of decoupling in the middle of control signal protective circuit with the second control signal input respectively, the first end of the accurate protective circuit of described control signal rear class is connected with the first control signal output with the second end of decoupling level protective circuit in the middle of described the first control signal respectively, the second end of the accurate protective circuit of described control signal rear class is connected with the second control signal output with the second end of decoupling level protective circuit in the middle of described the first control signal respectively, the release isolation current potential on telegram in reply road of described control signal prime master is played a reversed role and is disturbed output to be connected with earth mat.
Further, the described control signal prime master telegram in reply road of releasing comprises the 3rd piezo-resistance, the 4th piezo-resistance, the 3rd discharge tube and the 4th discharge tube, in the middle of described the first control signal, decoupling level protective circuit comprises the first resistor, in the middle of described the second control signal, decoupling level protective circuit comprises the second resistor, the accurate protective circuit of described control signal rear class comprises the 2nd TVS pipe, the first diode, the second diode, the first end of described the 3rd piezo-resistance is connected with the first end of described the first resistor with described the first control signal input respectively, the second end of described the 3rd piezo-resistance described the 3rd discharge tube of connecting successively, the 4th discharge tube with after the 4th piezo-resistance, be connected with the first end of described the second resistor with described the second control signal input respectively, the second end of described the first resistor respectively with the positive pole of described the first diode, the negative pole of described the second diode is connected with the output of described the first control signal, the negative pole of described the first diode is connected with the first end of the 2nd TVS pipe with the positive pole of described the second diode respectively, the second end of described the 2nd TVS pipe is connected with described the second control signal output with the second end of described the second resistor respectively.
Further, described SDI transmission system overvoltage protection circuit comprises the SDI prime master telegram in reply road of releasing, decoupling level protective circuit in the middle of SDI, the accurate protective circuit of SDI rear class and the SDI isolation current potential interfered circuit of playing a reversed role, the release first end on telegram in reply road of described SDI prime master is connected with the first end of decoupling level protective circuit in the middle of BNC core signal input part and described SDI respectively, the first end of the accurate protective circuit of described SDI rear class is connected with BNC core signal output part with the second end of decoupling level protective circuit in the middle of described SDI respectively, release second end on telegram in reply road of described SDI prime master is connected with the play a reversed role first end of interfered circuit of the second end of the accurate protective circuit of described SDI rear class and described SDI isolation current potential respectively by BNC skin, play a reversed role the second end of interfered circuit of described SDI isolation current potential is connected with earth mat.
Further, the described SDI prime master telegram in reply road of releasing comprises the 5th discharge tube, in the middle of described SDI, decoupling level protective circuit comprises the 3rd resistor, the accurate protective circuit of described SDI rear class comprises the 3rd TVS pipe, the described SDI isolation current potential interfered circuit of playing a reversed role comprises the 6th discharge tube, the first end of described the 5th discharge tube is connected with the first end of described the 3rd resistor with described BNC core signal input part respectively, the second end of described the 3rd resistor is connected with described BNC core signal output part with the first end of described the 3rd TVS pipe respectively, the second end of described the 3rd TVS pipe is connected with the first end of described the 6th discharge tube with the second end of described the 5th discharge tube respectively by BNC skin.
Further, the second end of described the first discharge tube, one end that the first end of described the second discharge tube, described the 3rd discharge tube are connected with described the 4th discharge tube and the second end of described the 6th discharge tube be connected and be connected with earth mat.
The beneficial effect of the utility model embodiment is: in conjunction with SDI technology and shocking preventing technology, the utility model provides a kind of highly reliable a kind of three-in-one excess voltage preventer innovation, advanced that has, there is following features: 1, planning rationally, transmission performance is superior, the utility model is selected high-quality lightning protection component, meets the performances such as SDI high-speed transfer speed, multiple signal carrier transmission completely.After mounted with lightning protection device, still can meet system transmission requirement.2, multistage protection, lightning protection effect is better, and the utility model has designed three grades of protection altogether, and prime is the lightning current main channel of releasing, and middle is decoupling protection, rear class is the accurate protection of end.Through three grades of protection Designs, the through-current capacity of lightning protection device can be higher, guarantees system safety operation.3, consider, be user-friendly to, the utility model combines power supply, control and sdi signal lightning protection effectively, is user-friendly to.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of the three-in-one excess voltage preventer of the utility model.
Fig. 2 is the electrical schematic diagram of the three-in-one excess voltage preventer of the utility model.
Fig. 3 is the electrical schematic diagram of the three-in-one excess voltage preventer of the utility model.
Fig. 4 is the circuit diagram of the three-in-one excess voltage preventer of the utility model.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can mutually combine, and below in conjunction with the drawings and specific embodiments, the application are described in further detail.
Please refer to Fig. 1 to Fig. 4, the utility model provides a kind of three-in-one excess voltage preventer, comprise the first lightning protection fuse F1, the second lightning protection fuse F2, the first piezo-resistance RV1, the second piezo-resistance RV2, the 3rd piezo-resistance RV3, the 4th piezo-resistance RV4, the first discharge tube G1, the second discharge tube G2, the 3rd discharge tube G3, the 4th discharge tube G4, the 5th discharge tube G5, the 6th discharge tube G6, the first resistor R1, the second resistor R2, the 3rd resistor R3, the one TVS pipe T1, the 2nd TVS pipe T2, the 3rd TVS pipe T3, the first diode D1, the second diode D2, the first inductance L 1 and the second inductance L 2, the first end of the first lightning protection fuse F1 is connected with the first end of the first inductance L 1 with the first power input respectively, the second end of the first lightning protection fuse F1 is connected after the first piezo-resistance RV1 and is connected with the first end of the first discharge tube G1, the second end of the first discharge tube G1 is connected with the first end of the second discharge tube G2, the second end of the second discharge tube G2 is connected after the second end of the second piezo-resistance RV2 and is connected with the first end of the second lightning protection fuse F2, the second end of the second lightning protection fuse F2 is connected with the first end of the second inductance L 2 with second source input respectively, the second end of the first inductance L 1 is connected with the first end of a TVS pipe T1 with the first power output end respectively, the second end of the one TVS pipe T1 is connected with second source output with the second end of the second inductance L 2 respectively, the first end of the 3rd piezo-resistance RV3 is connected with the first end of the first resistor R1 with the first control signal input respectively, the second end of the 3rd piezo-resistance RV3 the 3rd discharge tube G3 that connects successively, the 4th discharge tube G4 with after the 4th piezo-resistance RV4, be connected with the first end of the second resistor R2 with the second control signal input respectively, the second end of the first resistor R1 respectively with the positive pole of the first diode D1, the negative pole of the second diode D2 is connected with the output of the first control signal, the negative pole of the first diode D1 is connected with the first end of the 2nd TVS pipe T2 with the positive pole of the second diode D2 respectively, the second end of the 2nd TVS pipe T2 is connected with the second control signal output with the first end of the second resistor R2 respectively, the first end of the 5th discharge tube G5 is connected with the first end of the 3rd resistor R3 with BNC core signal input part respectively, the second end of the 3rd resistor R3 is connected with BNC core signal output part with the first end of the 3rd TVS pipe T3 respectively, the second end of the 3rd TVS pipe T3 is connected with the first end of the 6th discharge tube G6 with the first end of the 5th discharge tube G5 respectively by BNC skin, the second end of the first discharge tube G1, the first end of the second discharge tube G2, one end that the 3rd discharge tube G3 is connected with the 4th discharge tube G4 is connected and is connected with earth mat with the second end of the 6th discharge tube G6.
The above is embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Claims (8)
1. a three-in-one excess voltage preventer, it is characterized in that, comprise overvoltage of power supply protection circuit, control system overvoltage protection circuit and SDI transmission system overvoltage protection circuit, the isolation current potential of described overvoltage of power supply protection circuit is played a reversed role to disturb the isolation current potential of output, control system overvoltage protection circuit to play a reversed role to disturb output and the isolation current potential of SDI transmission system overvoltage protection circuit to play a reversed role and is disturbed output to be connected to be afterwards connected with earth mat.
2. three-in-one excess voltage preventer as claimed in claim 1, it is characterized in that, described overvoltage of power supply protection circuit comprises the power supply prime master telegram in reply road of releasing, decoupling level protective circuit in the middle of the first power supply, the accurate protective circuit of decoupling level protective circuit and power supply rear class in the middle of second source, the release first end on telegram in reply road of described power supply prime master is connected with the first end of the described first level of decoupling in the middle of power supply protective circuit with the first power input respectively, release second end on telegram in reply road of described power supply prime master is connected with the first end of decoupling level protective circuit in the middle of second source input and described second source respectively, the first end of the accurate protective circuit of described power supply rear class is connected with the first power output end with the second end of decoupling level protective circuit in the middle of described the first power supply respectively, the second end of the accurate protective circuit of described power supply rear class is connected with second source output with the second end of decoupling level protective circuit in the middle of described the first power supply respectively, the release isolation current potential on telegram in reply road of described power supply prime master is played a reversed role and is disturbed output to be connected with earth mat.
3. three-in-one excess voltage preventer as claimed in claim 2, it is characterized in that, the described power supply prime master telegram in reply road of releasing comprises the first lightning protection fuse, the second lightning protection fuse, the first piezo-resistance, the second piezo-resistance, the first discharge tube and the second discharge tube, in the middle of described the first power supply, decoupling level protective circuit comprises the first inductance, in the middle of described second source, decoupling level protective circuit comprises the second inductance, the accurate protective circuit of described power supply rear class comprises a TVS pipe, the first end of described the first lightning protection fuse is connected with the first end of described the first inductance with described the first power input respectively, the second end of described the first lightning protection fuse is connected after described the first piezo-resistance and is connected with the first end of described the first discharge tube, the second end of described the first discharge tube is connected with the first end of described the second discharge tube, the second end of described the second discharge tube is connected after the second end of described the second piezo-resistance and is connected with the first end of described the second lightning protection fuse, the second end of described the second lightning protection fuse is connected with the first end of described the second inductance with described second source input respectively, the second end of described the first inductance is connected with the first end of a described TVS pipe with described the first power output end respectively, the second end of a described TVS pipe is connected with described second source output with the second end of described the second inductance respectively.
4. three-in-one excess voltage preventer as claimed in claim 3, it is characterized in that, described control system overvoltage protection circuit comprises the control signal prime master telegram in reply road of releasing, decoupling level protective circuit in the middle of the first control signal, the accurate protective circuit of decoupling level protective circuit and control signal rear class in the middle of the second control signal, the release first end on telegram in reply road of described control signal prime master is connected with the first end of the described first level of decoupling in the middle of control signal protective circuit with the first control signal input respectively, release second end on telegram in reply road of described control signal prime master is connected with the first end of the described second level of decoupling in the middle of control signal protective circuit with the second control signal input respectively, the first end of the accurate protective circuit of described control signal rear class is connected with the first control signal output with the second end of decoupling level protective circuit in the middle of described the first control signal respectively, the second end of the accurate protective circuit of described control signal rear class is connected with the second control signal output with the second end of decoupling level protective circuit in the middle of described the first control signal respectively, the release isolation current potential on telegram in reply road of described control signal prime master is played a reversed role and is disturbed output to be connected with earth mat.
5. three-in-one excess voltage preventer as claimed in claim 4, it is characterized in that, the described control signal prime master telegram in reply road of releasing comprises the 3rd piezo-resistance, the 4th piezo-resistance, the 3rd discharge tube and the 4th discharge tube, in the middle of described the first control signal, decoupling level protective circuit comprises the first resistor, in the middle of described the second control signal, decoupling level protective circuit comprises the second resistor, the accurate protective circuit of described control signal rear class comprises the 2nd TVS pipe, the first diode, the second diode, the first end of described the 3rd piezo-resistance is connected with the first end of described the first resistor with described the first control signal input respectively, the second end of described the 3rd piezo-resistance described the 3rd discharge tube of connecting successively, the 4th discharge tube with after the 4th piezo-resistance, be connected with the first end of described the second resistor with described the second control signal input respectively, the second end of described the first resistor respectively with the positive pole of described the first diode, the negative pole of described the second diode is connected with the output of described the first control signal, the negative pole of described the first diode is connected with the first end of the 2nd TVS pipe with the positive pole of described the second diode respectively, the second end of described the 2nd TVS pipe is connected with described the second control signal output with the second end of described the second resistor respectively.
6. three-in-one excess voltage preventer as claimed in claim 5, it is characterized in that, described SDI transmission system overvoltage protection circuit comprises the SDI prime master telegram in reply road of releasing, decoupling level protective circuit in the middle of SDI, the accurate protective circuit of SDI rear class and the SDI isolation current potential interfered circuit of playing a reversed role, the release first end on telegram in reply road of described SDI prime master is connected with the first end of decoupling level protective circuit in the middle of BNC core signal input part and described SDI respectively, the first end of the accurate protective circuit of described SDI rear class is connected with BNC core signal output part with the second end of decoupling level protective circuit in the middle of described SDI respectively, release second end on telegram in reply road of described SDI prime master is connected with the play a reversed role first end of interfered circuit of the second end of the accurate protective circuit of described SDI rear class and described SDI isolation current potential respectively by BNC skin, play a reversed role the second end of interfered circuit of described SDI isolation current potential is connected with earth mat.
7. three-in-one excess voltage preventer as claimed in claim 6, it is characterized in that, the described SDI prime master telegram in reply road of releasing comprises the 5th discharge tube, in the middle of described SDI, decoupling level protective circuit comprises the 3rd resistor, the accurate protective circuit of described SDI rear class comprises the 3rd TVS pipe, the described SDI isolation current potential interfered circuit of playing a reversed role comprises the 6th discharge tube, the first end of described the 5th discharge tube is connected with the first end of described the 3rd resistor with described BNC core signal input part respectively, the second end of described the 3rd resistor is connected with described BNC core signal output part with the first end of described the 3rd TVS pipe respectively, the second end of described the 3rd TVS pipe is connected with the first end of described the 6th discharge tube with the second end of described the 5th discharge tube respectively by BNC skin.
8. three-in-one excess voltage preventer as claimed in claim 7, it is characterized in that, one end that the second end of described the first discharge tube, the first end of described the second discharge tube, described the 3rd discharge tube are connected with described the 4th discharge tube and the second end of described the 6th discharge tube are connected and are connected with earth mat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480409.9U CN203434614U (en) | 2013-08-07 | 2013-08-07 | Three-in-one overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480409.9U CN203434614U (en) | 2013-08-07 | 2013-08-07 | Three-in-one overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203434614U true CN203434614U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320480409.9U Expired - Fee Related CN203434614U (en) | 2013-08-07 | 2013-08-07 | Three-in-one overvoltage protection device |
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| Country | Link |
|---|---|
| CN (1) | CN203434614U (en) |
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2013
- 2013-08-07 CN CN201320480409.9U patent/CN203434614U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Pingshan large science and Technology Industrial Zone Road No. 3 building D401 Patentee after: SHENZHEN TECHWIN LIGHTNING TECHNOLOGIES CO.,LTD. Address before: 518000 Guangdong, Shenzhen, Shahe West Road, tea light industrial park, building 3, building A, 2, Patentee before: SHENZHEN TECHWIN LIGHTNING TECHNOLOGIES CO.,LTD. |
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| 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: 20140212 |