CN201146383Y - Multiple in one surge protective machine - Google Patents
Multiple in one surge protective machine Download PDFInfo
- Publication number
- CN201146383Y CN201146383Y CNU2007200825207U CN200720082520U CN201146383Y CN 201146383 Y CN201146383 Y CN 201146383Y CN U2007200825207 U CNU2007200825207 U CN U2007200825207U CN 200720082520 U CN200720082520 U CN 200720082520U CN 201146383 Y CN201146383 Y CN 201146383Y
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- Prior art keywords
- circuit
- earial drainage
- clamp circuit
- surge protection
- surge
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- Expired - Fee Related
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- 230000001268 conjugating effect Effects 0.000 abstract 1
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- 238000012544 monitoring process Methods 0.000 description 3
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- 208000033999 Device damage Diseases 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model provides an all-in-one surge protection device, and the protector is connected on circuits for power supply, control, coaxial video, etc., in series; the device is characterized in that: the surge protection device consists of more than two levels of surge protection circuits, comprising a plurality of levels of discharge and clamping circuits and current limiting circuits. The coaxial line surge protection circuit adopts a conjugating coil, thus having more significant effect for overcoming the surge protection ability, and further eliminating the interferences caused by the transmission of changeable signals by adopting the resistive and capacitive current limiting elements in the past.
Description
Technical field
The utility model relates to the Surge Protector of a kind of voltage, electric current.A kind of protector of protecting of the system equipment of comparatively concentrating at supply line, signal line, control circuit particularly.
Background technology
When the thunderstorm weather, the light current circuit is struck by lightning or is struck by lightning the induction overvoltage that causes the light current circuit to produce, overcurrent phenomenon and caused weak electricity system and based on the device damage of integrated circuit, even casualties.
Solve such light current line fault, need operation department to drop into very big man power and material and safeguard that this has had a strong impact on the operate as normal of engineering merchant and operator.In order to solve the problem that this thunderbolt causes, some protective devices have been studied by some units at present, and as adopting shielding, ground connection, equipotential bonding, install measure such as surge protector additional, but effect is undesirable.Open source literature has also been reported this type of surge protective capacities product, as: [All-in-One lightning protection device], open (bulletin) number: CN200962521, [summary] this All-in-One lightning protection device comprises power lightning protection circuit, video lightning protection circuit, cradle head control lightning protection circuit and shell, the input of lightning protection device and output are provided with the binding post joint of power supply, video and cradle head control lightning protection circuit respectively, between the signal lighting protection earth terminal of power lightning protection earth terminal and video and cradle head control circuit, connect an isolator, at video BNC connector overcoat one BNC insulating cement ring.[lightning protection device for video frequency monitoring equipment] open (bulletin) number: CN1674390, [summary] the invention belongs to the thunder resisting equipment field, be particularly related to a kind of lightning protection device for video frequency monitoring equipment of the video monitoring rear end equipment being impacted from video signal cable thunder and lightning, surge voltage of suppressing, it comprises: be used to suppress the high frequency surge voltage the low-pass filtering part, be used to suppress voltage absorption portion, video comfort amplifier section and the voltage clamping circuit of high frequency surge voltage; The input of the input of described voltage absorption portion and low-pass filtering part joins; Described low-pass filtering part output joins through the input of protective resistance and voltage clamping circuit; The input of described voltage clamping circuit joins through the input of isolation resistance and video comfort amplifier section.
Summary of the invention
In order to overcome the deficiencies in the prior art; the inventor has studied the structure of existing signal protection device; proposed a kind of under the condition that does not change weakness and electronics integrated equipment original function; strengthen electric current, the voltage signal line protector of surge protector, i.e. All-in-One surge protector in the autoprotection ability of wayside control system and circuit transmission.
The technical solution of the utility model is as follows:
Integrated the surge protection circuit of AC220V, AC24V supply line, order wire, coaxial line; wherein key position is to have adopted in the coaxial line surge protection circuit and grips inductance coil altogether; the whole protecting device serial connection can be protected headend equipment effectively on system line.
This protector is serially connected in have been integrated on power supply, control, the coaxial video line; Form by some grades of surge protection circuits, some grades of earial drainages and clamp circuit, current-limiting circuit.
Supply line's (comprising AC220V, AC24V) surge protection circuit is by input termination first order earial drainage and clamp circuit, one group of current-limiting circuit of series connection and connect the output of supply line between first order earial drainage and clamp circuit and second level earial drainage and the clamp circuit.
The surge protection circuit of control signal is by input termination first order earial drainage and clamp circuit, one group of current-limiting circuit of series connection between first order earial drainage and clamp circuit and second level earial drainage and the clamp circuit, the one group of current-limiting circuit of also connecting between second level earial drainage and clamp circuit and third level earial drainage and the clamp circuit, afterbody earial drainage and clamp circuit also connect the output of control circuit.
The surge protection circuit of coaxial line, by coaxial signal input termination first order earial drainage and clamp circuit, series connection is gripped inductance coil for one group altogether between first order earial drainage and clamp circuit and second level earial drainage and the clamp circuit, behind second level earial drainage and clamp circuit and third level earial drainage and clamp circuit and connect the output of coaxial signal circuit; The above-mentioned said circuit of respectively organizing can select corresponding surge protection circuit combine and assemble as required in same shell; Described earial drainage and clamp circuit adopt piezo-resistance polyphone Temperature protection and discharge tube to constitute.
Described current-limiting circuit is decoupling inductance or capacitive, resistive electronic component (as thermistor PTC).
Grip inductance coil altogether in the coaxial line surge protection circuit, adopt two shared magnet rings of inductance, two inductance, magnetic strength direction of winding are opposite, and its magnetic strength direction is also opposite.
Each surge protection circuit has all adopted the above protective circuit of two-stage.
The utility model has the advantages that:
Adopted in the coaxial line surge protection circuit and gripped inductance coil altogether, be characterized in two shared magnet rings of inductance, and the magnetic strength direction has been opposite,, when vision signal in the circuit is passed through, can not decay because of the magnetic resistance of inductance because baseband video signal is non-balance transmission; And when surge current (as: lightning current) was invaded, its energy was transition, and inductance itself just can suppress the sudden change of electric current, so protected headend equipment effectively.
Description of drawings
Fig. 1 is the surge protection circuit figure of power supply.
Fig. 2 is the common choking coil schematic diagram in the protection circuit.
Embodiment
The surge protection circuit structure of supply line's (comprising AC220V, AC24V) is: the first order comprises the bleed-off circuit of surge current: four circuits of supply line's (comprising AC220V, AC24V) connect Temperature protection 2 respectively, after being connected in series piezo- resistance 3,9 again, be connected in series a gas discharge tube 6,12 over the ground again in the line-to-line of supply line's (comprising AC220V, AC24V).The second level is to the bleed-off circuit of surge current, be piezo- resistance 4,10 and Temperature protection 2 serial connections equally, between two supply lines, be connected in series a gas discharge tube 7,13 over the ground, carry out clamper between line with piezo-resistance 5,11 serial connection Temperature protections 2 between two supply lines, the first order to being connected in series with decoupling inductance 1 between the bleed-off circuit of surge current, has prevented that inter-stage from crosstalking to the bleed-off circuit of surge current and the second level effectively.Supply line's (comprising AC220V, AC24V) condition indication circuit is made of rectifier diode 27 and light-emitting diode 28 and current-limiting resistance 29,30 respectively.
Coaxial line surge protection circuit, its circuit structure is: first order surge protection circuit passes through gas discharge tube 14 and connects coaxial core and screens, connects screens and ground by gas discharge tube 14, and the realization surge current is released over the ground.Be connected in series one between first order surge protection circuit and second level surge protection circuit and grip inductance 16 altogether, second level surge protection circuit connects coaxial core and screen by gas discharge tube 15, connect screen and ground by gas discharge tube 15, the realization surge current is released over the ground.Through preceding secondary surge protection circuit with after gripping inductance 16 chokes altogether, third level surge protection circuit connects coaxial core and screen by quick voltage stabilizing element 18, connect screen and ground by fast recovery diode 17, connect coaxial core and ground by quick voltage stabilizing element 19, realization is released and clamper, has guaranteed the safety of equipment.
Signal of communication surge protection circuit, its circuit structure is: first order surge protection circuit connects two holding wires and ground respectively by two gas discharge tubes 23, realize surge current drainage function over the ground, be connected in series one group of current-limiting circuit 22 between first order surge protection circuit and second level surge protection circuit.Second level surge protection circuit connects two holding wires and ground respectively by two discharge tubes 24, realize surge current drainage function over the ground, be connected in series one group of current-limiting circuit 20 between second level surge protection circuit and third level surge protection circuit, third level surge protection circuit connects two holding wires and ground respectively by voltage stabilizing element 26, and connect by quick voltage stabilizing element 25 between two holding wires, realize surge current is released and the clamper function.Output at holding wire is connected in series two resistance circuits 21 respectively at last, realizes metering function.
Claims (3)
1, a kind of All-in-One surge protector comprises circuit structure and electronic devices and components, it is characterized in that: this protector is serially connected in have been integrated on power supply, control, the coaxial video line; Form by some grades of surge protection circuits, some grades of earial drainages and clamp circuit, current-limiting circuit;
Supply line's surge protection circuit is by input termination first order earial drainage and clamp circuit, one group of current-limiting circuit of series connection and connect the output of supply line between first order earial drainage and clamp circuit and second level earial drainage and the clamp circuit;
The surge protection circuit of control signal is by input termination first order earial drainage and clamp circuit, one group of current-limiting circuit of series connection between first order earial drainage and clamp circuit and second level earial drainage and the clamp circuit, the one group of current-limiting circuit of also connecting between second level earial drainage and clamp circuit and third level earial drainage and the clamp circuit, afterbody earial drainage and clamp circuit also connect the output of control circuit;
The surge protection circuit of coaxial line, by coaxial signal input termination first order earial drainage and clamp circuit, series connection is gripped inductance coil for one group altogether between first order earial drainage and clamp circuit and second level earial drainage and the clamp circuit, behind second level earial drainage and clamp circuit and third level earial drainage and clamp circuit and connect the output of coaxial signal circuit; Described earial drainage and clamp circuit adopt piezo-resistance (3), (4), (5), (9), (10) polyphone Temperature protection (2) and discharge tube (6), (7), (12), (13) to constitute;
Described current-limiting circuit (1), (8), (16), (20), (21) are decoupling inductance or capacitive, resistive electronic component.
2, All-in-One surge protector according to claim 1, it is characterized in that: grip inductance coil altogether in the coaxial line surge protection circuit, adopt two shared magnet rings of inductance (31), two inductance (32), (33) magnetic strength direction of winding are opposite, and its magnetic strength direction is also opposite.
3, All-in-One surge protector according to claim 1 is characterized in that: each surge protection circuit has all adopted the above protective circuit of two-stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200825207U CN201146383Y (en) | 2007-12-10 | 2007-12-10 | Multiple in one surge protective machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200825207U CN201146383Y (en) | 2007-12-10 | 2007-12-10 | Multiple in one surge protective machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201146383Y true CN201146383Y (en) | 2008-11-05 |
Family
ID=40083270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200825207U Expired - Fee Related CN201146383Y (en) | 2007-12-10 | 2007-12-10 | Multiple in one surge protective machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201146383Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8179654B2 (en) | 2008-12-10 | 2012-05-15 | Unihan Corporation | Surge preventing circuit, local area network connector, and network module |
| CN101752853B (en) * | 2008-12-10 | 2012-12-19 | 永硕联合国际股份有限公司 | Surge protection circuit, local area network connector and network module |
-
2007
- 2007-12-10 CN CNU2007200825207U patent/CN201146383Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8179654B2 (en) | 2008-12-10 | 2012-05-15 | Unihan Corporation | Surge preventing circuit, local area network connector, and network module |
| CN101752853B (en) * | 2008-12-10 | 2012-12-19 | 永硕联合国际股份有限公司 | Surge protection circuit, local area network connector and network module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20141210 |
|
| EXPY | Termination of patent right or utility model |