CN202009220U - Protection circuit of 3G (the 3rd generation) antenna power source - Google Patents
Protection circuit of 3G (the 3rd generation) antenna power source Download PDFInfo
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- CN202009220U CN202009220U CN2011201075914U CN201120107591U CN202009220U CN 202009220 U CN202009220 U CN 202009220U CN 2011201075914 U CN2011201075914 U CN 2011201075914U CN 201120107591 U CN201120107591 U CN 201120107591U CN 202009220 U CN202009220 U CN 202009220U
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Abstract
The utility model relates to the technical field of communication safety, in particular to a protection circuit of a 3G (the 3rd generation) antenna power source, comprising an AISG (antenna interface standard group) interface and antenna signal input module, an AISG lightning protection module, a communication module, an MCU (micro control unit) master control module, a motor driving module, a load antenna module, a power voltage-stabilizing module connector, a first power converting module connector and a second power converting module which are successively connected with each other. The protection circuit further comprises a first power protecting module and a second power protecting module. The first power converting module is respectively connected with the second power converting module and the motor driving module via the first power protecting module, and the second power converting module is respectively connected with the communication module and the MCU master control module via the second power protecting module. In an embodiment, by the aid of the first power protecting module and the second power protecting module, former and latter circuits cannot be damaged when a voltage-stability chip is in short circuit.
Description
Technical field
The utility model relates to technical field of communication safety and comprising, particularly a kind of 3G (Third Generation) Moblie technology (3rd-generation, 3G) antenna power protection circuit.
Background technology
In the 3G antenna circuit, all can use power supply, owing to need to give parts such as motor, process chip to power, the different voltages that therefore have two or more in the 3G antenna circuit exist simultaneously.In the prior art, be that voltage stabilizing chip by special use provides different voltage, with realization corresponding parts are powered, the output voltage of voltage stabilizing chip has directly been supplied with the circuit of back level, if voltage stabilizing chip short circuit, before and after the circuit of level all can reciprocal influence, the circuit of level all is damaged before and after making.
The utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is: when how to realize the short circuit of voltage stabilizing chip, and the circuit of level before and after not damaging.
(2) technical scheme
For solving the problems of the technologies described above; the utility model provides a kind of 3G antenna power protection circuit; comprise: AISG interface of Lian Jieing and aerial signal input module successively; AISG lightning protection module; communication module; MCU master control module; motor drive module; and loaded antenna module; also comprise the power regulator module that is connected with described AISG lightning protection module; first power transfer module that is connected with described power regulator module; the second source modular converter that is connected with described first power transfer module; described first power transfer module also is connected with described motor drive module; described second source modular converter is connected with described MCU master control module with described communication module respectively; also comprise: the first power protection module and second source protection module; described first power transfer module is connected with described motor drive module with the second source modular converter respectively by the described first power protection module, and described second source modular converter is connected with described MCU master control module with described communication module respectively by described second source protection module.
Wherein, described first power protection module and second source protection module include: two voltage-stabiliser tubes and a current-limiting resistance; the negative electrode of two voltage-stabiliser tubes interconnects; the anode of two voltage-stabiliser tubes is ground connection respectively; be connected with current-limiting resistance between the negative electrode of two voltage-stabiliser tubes; the negative electrode of first voltage-stabiliser tube is connected with the output anode of front stage circuits, and the negative electrode of second voltage-stabiliser tube is connected with the input anode of late-class circuit.
(3) beneficial effect
Present embodiment makes when the short circuit of voltage stabilizing chip by the first power protection module and second source protection module are set, the circuit of level before and after can not damaging.
Description of drawings
Fig. 1 is the structured flowchart according to the 3G antenna power protection circuit of a kind of execution mode of the utility model;
Fig. 2 is the second source modular converter of 3G antenna power protection circuit shown in Figure 1 and the concrete structure schematic diagram of second source protection module.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 is the structured flowchart according to the 3G antenna power protection circuit of a kind of execution mode of the utility model; comprise: the antennal interface standard agreement of Lian Jieing (Antenna InterfaceStandards Group successively; AISG) interface and aerial signal input module 1; AISG lightning protection module 2; communication module 3; micro-control unit (Micro Control Unit; MCU) the master control module 4; motor drive module 5; loaded antenna module 6; also comprise the power regulator module 7 that is connected with described AISG lightning protection module 2; first power transfer module 8 that is connected with described power regulator module 7; the second source modular converter 9 that is connected with described first power transfer module 8; described first power transfer module 8 also is connected with described motor drive module 5; described second source modular converter 9 is connected with described MCU master control module 4 with described communication module 3 respectively; described loaded antenna 6 is connected with described MCU master control module 4; in addition; also comprise: the first power protection module 10 and second source protection module 11; described first power transfer module 8 is connected with described motor drive module 5 with second source modular converter 9 respectively by the described first power protection module 10, and described second source modular converter 9 is connected with described MCU master control module 4 with described communication module 3 respectively by described second source protection module 11.
Described first power protection module 10 and second source protection module 11 include: two voltage-stabiliser tubes and a current-limiting resistance; the negative electrode of two voltage-stabiliser tubes interconnects; the anode of two voltage-stabiliser tubes is ground connection respectively; be connected with current-limiting resistance between the negative electrode of two voltage-stabiliser tubes; the negative electrode of first voltage-stabiliser tube is connected with the output anode of front stage circuits, and the negative electrode of second voltage-stabiliser tube is connected with the input anode of late-class circuit.
Concrete structure schematic diagram with second source modular converter 9 and second source protection module 11 illustrates the utility model below, and as shown in Figure 2, second source protection module 11 comprises in the present embodiment: voltage-stabiliser tube D2, D3 and current-limiting resistance R1.
The operation principle of present embodiment is: when operate as normal, the input INPUT of second source modular converter receives the voltage of first power protection module output, after capacitor C 1 filtering, enter among the voltage stabilizing chip VR1, the voltage of VR1 output is through capacitor C 2, the filtering of C3, the rectification of Schottky diode D1, enter described second source protection module after the filtering of inductance L 1, capacitor C 4, C5, the protection through voltage stabilizing didoe D2, D3, current-limiting resistance R1 exports voltage to output VCC; When the output voltage of VR1 is big, voltage stabilizing didoe D2 is stabilized in predetermined value (in the present embodiment with voltage, the second source modular converter is 3.3V for the voltage that communication module and MCU master control module provide, promptly predetermined value herein is 3.3V, the chip of VR1 is preferably LM2671M-3.3), at this moment, voltage stabilizing didoe D2 does not work; Excessive when the output voltage of VR1, when exceeding the withstand voltage scope of voltage stabilizing didoe D3, electric current can blow current-limiting resistance R1, to protect the circuit of back level.When the electric voltage exception of output VCC, voltage-stabiliser tube D2, D3 said that dual voltage stabilizing meeting made voltage control in the withstand voltage scope of VR1, and when the overtension of output VCC, when having surpassed the withstand voltage scope of voltage-stabiliser tube D2, resistance R 1 is blown the circuit with the protection prime.
Above execution mode only is used to illustrate the utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (2)
1. 3G antenna power protection circuit; comprise: AISG interface of Lian Jieing and aerial signal input module (1) successively; AISG lightning protection module (2); communication module (3); MCU master control module (4); motor drive module (5); and loaded antenna module (6); also comprise the power regulator module (7) that is connected with described AISG lightning protection module (2); first power transfer module (8) that is connected with described power regulator module (7); the second source modular converter (9) that is connected with described first power transfer module (8); described first power transfer module (8) also is connected with described motor drive module (5); described second source modular converter (9) is connected with described MCU master control module (4) with described communication module (3) respectively; it is characterized in that; also comprise: the first power protection module (10) and second source protection module (11); described first power transfer module (8) is connected with described motor drive module (5) with second source modular converter (9) respectively by the described first power protection module (10), and described second source modular converter (9) is connected with described MCU master control module (4) with described communication module (3) respectively by described second source protection module (11).
2. 3G antenna power protection circuit as claimed in claim 1; it is characterized in that; described first power protection module (10) and second source protection module (11) include: two voltage-stabiliser tubes and a current-limiting resistance; the negative electrode of two voltage-stabiliser tubes interconnects; the anode of two voltage-stabiliser tubes is ground connection respectively; be connected with current-limiting resistance between the negative electrode of two voltage-stabiliser tubes; the negative electrode of first voltage-stabiliser tube is connected with the output anode of front stage circuits, and the negative electrode of second voltage-stabiliser tube is connected with the input anode of late-class circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201075914U CN202009220U (en) | 2011-04-13 | 2011-04-13 | Protection circuit of 3G (the 3rd generation) antenna power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201075914U CN202009220U (en) | 2011-04-13 | 2011-04-13 | Protection circuit of 3G (the 3rd generation) antenna power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202009220U true CN202009220U (en) | 2011-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201075914U Expired - Lifetime CN202009220U (en) | 2011-04-13 | 2011-04-13 | Protection circuit of 3G (the 3rd generation) antenna power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202009220U (en) |
-
2011
- 2011-04-13 CN CN2011201075914U patent/CN202009220U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Chun Hing Road Xiangcheng Economic Development Zone in Suzhou City, Jiangsu Province, No. 50 215132 Patentee after: Suzhou eTron Polytron Technologies Inc Address before: 215132 Yong Qing Road, Huangqiao Industrial Park, Suzhou, Jiangsu, Xiangcheng District Patentee before: Suzhou Etron Electronics Co.,Ltd |
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| CX01 | Expiry of patent term |
Granted publication date: 20111012 |
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| CX01 | Expiry of patent term |