CN204376402U - A kind of surge protector with under-voltage protection level - Google Patents
A kind of surge protector with under-voltage protection level Download PDFInfo
- Publication number
- CN204376402U CN204376402U CN201520087175.0U CN201520087175U CN204376402U CN 204376402 U CN204376402 U CN 204376402U CN 201520087175 U CN201520087175 U CN 201520087175U CN 204376402 U CN204376402 U CN 204376402U
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- Prior art keywords
- protective circuit
- level
- order
- surge protector
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- 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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Abstract
The utility model discloses a kind of surge protector with under-voltage protection level; comprise the thick protective circuit of the first order, the thin protective circuit in the second level and transient suppress; the thick protective circuit of the first order is in parallel with the thin protective circuit in the second level; the equal ground connection of the thin protective circuit of the thick protective circuit of the first order and the second level, the thin protective circuit in the second level direct ground connection but be connected by the thick protective circuit of transient suppress and the first order.The utility model has two-stage lightning protection circuit, has transient suppress simultaneously, provides more effectively lightning protection to electronic equipment.
Description
Technical field
The utility model relates to a kind of surge protector, particularly a kind of surge protector with under-voltage protection level.
Background technology
Surge protector prevents thunder and lightning and other overvoltage from scurrying into by circuit or by the high potential produced on earthing device that is struck by lightning the device that electronic equipment causes damage; Adopt surge protector also can be limited by a large amount of pulse energies that grounded circuit release circuit produces because of lightning induction within the shortest time in circuit and produce high potential, thus the electronic equipment on available protecting back end of line.Surge protector is in the market designed with two-stage lightning protection circuit mostly, is respectively the thin protective circuit of the thick protective circuit of the first order and the second level.This two-stage circuit or all directly access ground path, otherwise the thin protective circuit in the second level does not connect ground path (over the ground " unsettled ").When there is thunderbolt, the voltage on the earthing device of the first surge protector is raised instantaneously, and high voltage scurries into surge protector immediately, is easy to cause electronic devices and components in the thin protective circuit in the second level breakdown, and then smashes the electronic equipment on back end of line; Then because of the thin protective circuit in the second level over the ground " unsettled ", the voltage that whole surge protector exports over the ground is higher, and close to the high voltage protection level of the thick protective circuit of the first order, the electronic equipment protected is very dangerous for the second surge protector.
Utility model content
The technical problems to be solved in the utility model is to provide one and has two-stage lightning protection circuit, has transient suppress simultaneously, provides the more efficiently surge protector with under-voltage protection level to electronic equipment.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of surge protector with under-voltage protection level; comprise the thick protective circuit of the first order, the thin protective circuit in the second level and transient suppress; the thick protective circuit of the first order is in parallel with the thin protective circuit in the second level; the equal ground connection of the thin protective circuit of the thick protective circuit of the first order and the second level, the thin protective circuit in the second level direct ground connection but be connected by the thick protective circuit of transient suppress and the first order.
Further, described transient suppress is inductance or resistance, or the sub-assembly of inductance and resistance.
Further, current limiting element is connected with in the connecting circuit of the thin protective circuit of the thick protective circuit of the described first order and the second level.
Adopt the surge protector with under-voltage protection level of technique scheme, because the thick protective circuit of the first order is in parallel with the thin protective circuit in the second level, the equal ground connection of the thin protective circuit of the thick protective circuit of the first order and the second level, the thin protective circuit in the second level direct ground connection but be connected by the thick protective circuit of transient suppress and the first order, so by transient suppress to electric current, the inhibitory action of voltage, reach the thin protective circuit in the second level not smashed by the moment high potential scurried into from earthing device, achieve again the effect of the thin protective circuit under-voltage protection in second level level simultaneously, thus protection electronic equipment can not suffer the instantaneous overcurrent produced that is struck by lightning, the infringement of too high voltages, there is the effect of under-voltage protection horizontal output.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams that the utility model has the surge protector of under-voltage protection level.
Embodiment
As shown in Figure 1, a kind of surge protector with under-voltage protection level, comprise the thick protective circuit of the first order 1, the thin protective circuit 2 in the second level and transient suppress 3, the thick protective circuit of the first order 1 is in parallel with the second level thin protective circuit 2, the thick protective circuit of the first order 1 and the thin protective circuit 2 in the second level all ground connection, the thin protective circuit in the second level 2 direct ground connection but be connected by the thick protective circuit 1 of transient suppress 3 and the first order; Transient suppress 3 is the sub-assembly of inductance, resistance or inductance and resistance; Current limiting element 4 is connected with in the thick protective circuit of the first order 1 and the connecting circuit of the thin protective circuit 2 in the second level; Current limiting element 4 is inductance or resistance.
The utility model has the surge protector of under-voltage protection level; by the electric current of transient suppress 3, the inhibitory action of voltage; reach the thin protective circuit 2 in the second level not smashed by the moment high potential scurried into from earthing device; achieve again the effect of the second level thin protective circuit 2 under-voltage protection level simultaneously; thus protection electronic equipment can not suffer the be struck by lightning instantaneous overcurrent of generation, the infringement of too high voltages, has the effect of under-voltage protection horizontal output.
Claims (4)
1. one kind has the surge protector of under-voltage protection level; comprise the thick protective circuit of the first order, the thin protective circuit in the second level and transient suppress; it is characterized in that: the thick protective circuit of the first order is in parallel with the thin protective circuit in the second level; the equal ground connection of the thin protective circuit of the thick protective circuit of the first order and the second level, the thin protective circuit in the second level is connected by the thick protective circuit of transient suppress and the first order.
2. the surge protector with under-voltage protection level according to claim 1, is characterized in that: transient suppress is inductance or resistance, or the sub-assembly of inductance and resistance.
3. the surge protector with under-voltage protection level according to claim 1, is characterized in that: be connected with current limiting element in the connecting circuit of the thin protective circuit of the thick protective circuit of the first order and the second level.
4. the surge protector with under-voltage protection level according to claim 3, is characterized in that: described current limiting element is inductance or resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087175.0U CN204376402U (en) | 2015-02-06 | 2015-02-06 | A kind of surge protector with under-voltage protection level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087175.0U CN204376402U (en) | 2015-02-06 | 2015-02-06 | A kind of surge protector with under-voltage protection level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204376402U true CN204376402U (en) | 2015-06-03 |
Family
ID=53332583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087175.0U Expired - Fee Related CN204376402U (en) | 2015-02-06 | 2015-02-06 | A kind of surge protector with under-voltage protection level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204376402U (en) |
-
2015
- 2015-02-06 CN CN201520087175.0U patent/CN204376402U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20170206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |