CN204089188U - A kind of amplifier lightning protection circuit - Google Patents
A kind of amplifier lightning protection circuit Download PDFInfo
- Publication number
- CN204089188U CN204089188U CN201420439885.0U CN201420439885U CN204089188U CN 204089188 U CN204089188 U CN 204089188U CN 201420439885 U CN201420439885 U CN 201420439885U CN 204089188 U CN204089188 U CN 204089188U
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- CN
- China
- Prior art keywords
- piezo
- resistance
- alternating current
- amplifier
- circuit
- 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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Abstract
The utility model discloses a kind of amplifier lightning protection circuit, comprise piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3, piezo-resistance VR2 is electrically connected with one of them terminals of piezo-resistance VR1 and piezo-resistance VR3 respectively, another terminals ground connection of piezo-resistance VR3 and piezo-resistance VR1, piezo-resistance VR2 is connected the first alternating current input with the connecting circuit of piezo-resistance VR1 by contactless driver PTC1, piezo-resistance VR2 first alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR1, piezo-resistance VR2 is connected the second alternating current input with the connecting circuit of piezo-resistance VR3 by fuse F1, a piezo-resistance VR2 second alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR3.The utility model adopts piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3, three piezo-resistances carry out voltage-regulation to the input voltage of amplifier, prevent amplifier overload from causing the phenomenon of damage, and the input voltage of amplifier can be guaranteed enough large and nonoverload, effectively can prevent the infringement that thunder and lightning causes amplifier.
Description
Technical field
The utility model relates to shocking preventing technology, particularly a kind of amplifier lightning protection circuit.
Background technology
Along with the de-velopment and innovation that do not continue in communication products field, mobile communication is throughout world various places, and the transmission of these mobile communication signals is all that the base station by being located at various places carries out transmitting.For ensureing efficiency and the quality of mobile communication transmission, being all generally top mobile communication base station being arranged on mountain top or high-rise, therefore also just having become the target that first Lightning Disaster attacks, be easy to the destruction being subject to induction lightening.The interference of Lightning Disaster to the infringement of communication equipment and communication network is a large difficult point problem always, cause the damage of communication equipment and the interruption of signal, the impact brought to human lives in the informationalized epoch also more and more comes heavy, cause very large economic loss, also also result in impact to telex network.
Country has formulated " mobile communication base station design of lighting protection and grounding specification " for this reason, and has done concrete requirement to the lightning protection of base station, but existing lightning-protected product to there is kinetic energy single, generally take the mode of multipath signal propagation to seem for present base station and be far from suitable; Especially radiofrequency signal and direct current are separated and transmit, cause that volume is large, cost is high, install and be inconvenient to wait factor.In addition, the lightning protection device due to prior art adopts cavity capacitor filtering structure to realize usually, and cause small product size large, raw material loss is many.And the required precision of cavity electric capacity to dielectric substrate material and machining is high, processed complex, production cycle length, high in cost of production feature, be unfavorable for batch production and cost control.Therefore market extremely needs a kind of protection meticulousr, and compact, cost more low energy are adapted to suitability for industrialized production, and can realize multiple signals in the Novel lightning-proof circuit of one.
Utility model content
The purpose of this utility model is the above-mentioned defect for prior art, provides a kind of supply voltage stable output, amplifier is had to the amplifier lightning protection circuit of protective effect.
For solving the above-mentioned defect of prior art, the technical scheme that the utility model provides is: a kind of amplifier lightning protection circuit, comprise piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3, piezo-resistance VR2 is electrically connected with one of them terminals of piezo-resistance VR1 and piezo-resistance VR3 respectively, another terminals ground connection of piezo-resistance VR3 and piezo-resistance VR1, piezo-resistance VR2 is connected the first alternating current input with the connecting circuit of piezo-resistance VR1 by contactless driver PTC1, piezo-resistance VR2 first alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR1, piezo-resistance VR2 is connected the second alternating current input with the connecting circuit of piezo-resistance VR3 by fuse F1, a piezo-resistance VR2 second alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR3, first alternating current output circuit is connected the power input port of amplifier with the second alternating current output circuit.
One as the utility model amplifier lightning protection circuit is improved, and the voltage regulation limits of described piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3 is 0V ~ 255V.
One as the utility model amplifier lightning protection circuit is improved, and the voltage of described first alternating current input, the second alternating current input, the first alternating current output circuit and the second alternating current output circuit is 220V.
Compared with prior art, the utility model has the advantages that: the utility model adopts piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3, three piezo-resistances carry out voltage-regulation to the input voltage of amplifier, prevent amplifier overload from causing the phenomenon of damage, and the input voltage of amplifier can be guaranteed enough large and nonoverload, amplifier is normally used, effectively can prevent the infringement that thunder and lightning causes amplifier.
Accompanying drawing explanation
Fig. 1 is the utility model circuit structure diagram.
Embodiment
Just with reference to the accompanying drawings the utility model is further described below.
As shown in Figure 1, a kind of amplifier lightning protection circuit, it is characterized in that, comprise piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3, piezo-resistance VR2 is electrically connected with one of them terminals of piezo-resistance VR1 and piezo-resistance VR3 respectively, another terminals ground connection of piezo-resistance VR3 and piezo-resistance VR1, piezo-resistance VR2 is connected the first alternating current input with the connecting circuit of piezo-resistance VR1 by contactless driver PTC1, piezo-resistance VR2 first alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR1, piezo-resistance VR2 is connected the second alternating current input with the connecting circuit of piezo-resistance VR3 by fuse F1, a piezo-resistance VR2 second alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR3, first alternating current output circuit is connected the power input port of amplifier with the second alternating current output circuit.
Preferably, the voltage regulation limits of piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3 is 0V ~ 255V.
Preferably, the voltage of the first alternating current input, the second alternating current input, the first alternating current output circuit and the second alternating current output circuit is 220V.
This product circuit plate is arranged in amplifier, has protective effect to amplifier, prevents thunder and lightning from causing the infringement of overvoltage to amplifier.The normal output of protection amplifying circuit.
The announcement of book and instruction according to the above description, the utility model circuit those skilled in the art can also carry out suitable change and amendment to the execution mode of foregoing circuit.Therefore, the utility model circuit is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the utility model circuit some modifications and changes of the utility model circuit.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (3)
1. an amplifier lightning protection circuit, it is characterized in that, comprise piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3, piezo-resistance VR2 is electrically connected with one of them terminals of piezo-resistance VR1 and piezo-resistance VR3 respectively, another terminals ground connection of piezo-resistance VR3 and piezo-resistance VR1, piezo-resistance VR2 is connected the first alternating current input with the connecting circuit of piezo-resistance VR1 by contactless driver PTC1, piezo-resistance VR2 first alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR1, piezo-resistance VR2 is connected the second alternating current input with the connecting circuit of piezo-resistance VR3 by fuse F1, a piezo-resistance VR2 second alternating current output circuit in parallel with the connecting circuit of piezo-resistance VR3, first alternating current output circuit is connected the power input port of amplifier with the second alternating current output circuit.
2. amplifier lightning protection circuit according to claim 1, is characterized in that, the voltage regulation limits of described piezo-resistance VR1, piezo-resistance VR2 and piezo-resistance VR3 is 0V ~ 255V.
3. amplifier lightning protection circuit according to claim 1, is characterized in that, the voltage of described first alternating current input, the second alternating current input, the first alternating current output circuit and the second alternating current output circuit is 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439885.0U CN204089188U (en) | 2014-08-06 | 2014-08-06 | A kind of amplifier lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439885.0U CN204089188U (en) | 2014-08-06 | 2014-08-06 | A kind of amplifier lightning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089188U true CN204089188U (en) | 2015-01-07 |
Family
ID=52181859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420439885.0U Expired - Fee Related CN204089188U (en) | 2014-08-06 | 2014-08-06 | A kind of amplifier lightning protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204089188U (en) |
-
2014
- 2014-08-06 CN CN201420439885.0U patent/CN204089188U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20200806 |