CN202978707U - Communication base station power voltage stabilizing circuit having advantage of high current resistance - Google Patents
Communication base station power voltage stabilizing circuit having advantage of high current resistance Download PDFInfo
- Publication number
- CN202978707U CN202978707U CN 201220649309 CN201220649309U CN202978707U CN 202978707 U CN202978707 U CN 202978707U CN 201220649309 CN201220649309 CN 201220649309 CN 201220649309 U CN201220649309 U CN 201220649309U CN 202978707 U CN202978707 U CN 202978707U
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- China
- Prior art keywords
- base station
- communication base
- circuit
- voltage stabilizing
- voltage
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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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- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a communication base station power voltage stabilizing circuit having the advantage of high current resistance. The connection point between the input end and the output end is connected with a switching tube Q1, a voltage stabilizer U1 is used to perform sampling on output voltages through a sampling bias circuit and drive the switching tube Q1, wherein when the output voltage is greater than a threshold value, the voltage stabilizer U1 is used to cause the switching tube Q1 to be switched off, and then the output end voltage is dropped immediately. The communication base station power voltage stabilizing circuit is characterized in that a charging and discharging circuit is connected across the connection point between the input end and the driving end of the voltage stabilizer U1 and the connection point between the sampling bias circuit and the voltage stabilizer U1. The communication base station power voltage stabilizing circuit of the utility model has advantages of simple structure, high working current, small working internal resistance, large output power, less power consumption and high current resistance.
Description
Technical field
The utility model relates to the communication base station and electric power technical field, relates in particular to its voltage stabilizing circuit.
Background technology
The operating current that existing communication base station voltage-stabilized power supply circuit can flow through is little, during work internal resistance large, power output is little, energy consumption is high.
Summary of the invention
The purpose of this utility model is to provide simple in structurely, and operating current is large, during work internal resistance little, power output is large, energy consumption is little, the base station power circuit of anti-large electric current.
Provide the communication base station and electric power voltage stabilizing circuit of anti-large electric current for this reason, contact at input and output is connected to switching tube Q1, pressurizer U1 is by sample-offset circuit sampling output voltage, and driving switch pipe Q1, output voltage higher than threshold value pressurizer U1 make switching tube Q1 cut-off, output end voltage descends immediately, it is characterized in that, has charge-discharge circuit to jump to the contact of sample-offset circuit and pressurizer U1 from the contact of the drive end of input and pressurizer U1.
The beneficial effects of the utility model are simple in structure, and operating current is large, during work internal resistance little, power output is large, energy consumption is little, anti-large electric current.
Description of drawings
Fig. 1 is the circuit diagram of communication base station and electric power voltage stabilizing circuit.
Embodiment
The communication base station and electric power voltage stabilizing circuit of anti-large electric current, contact at input and output is connected to switching tube Q1, the sample-offset circuit sampling output voltage of pressurizer U1 by being consisted of by divider resistance R4, R5, and driving switch pipe Q1, there is the charge-discharge circuit that is formed by capacitor C 1 and resistance R 3 serial connections to jump to the contact of sample-offset circuit and pressurizer U1 from the contact of the drive end of input and pressurizer U1.
When output voltage was too high, the A point voltage was higher than the reference voltage 2.5V of pressurizer U1, the inner conducting of pressurizer U1, and the drive end that makes switching tube Q1 is low level, and switching tube Q1 has just ended, and output end voltage falls after rise immediately.Thereby the pressurizer U1 by inner conducting discharged the A point voltage to A point was fallen after rise rapidly the charge-discharge circuit this moment that is formed by capacitor C 1 and resistance R 3 serial connections.
When output voltage was too low, the A point voltage was lower than the reference voltage 2.5V of pressurizer U1, and pressurizer U1 is inner ends, the drive end that makes switching tube Q1 is high level, pressurizer U1 has just driven switching tube Q1 conducting, and output obtains the voltage of input, therefore output end voltage gos up immediately.Thereby charging is gone up rapidly the A point voltage to the A point to obtain electric energy from input at this moment by the charge-discharge circuit that capacitor C 1 and resistance R 3 serial connections form.
The operation principle of base station power circuit is, utilizes switch MOS pipe Q1 operating current large, during work internal resistance little, power output is large, energy consumption is little to be realized.
Claims (3)
1. the communication base station and electric power voltage stabilizing circuit of anti-large electric current, contact at input and output is connected to switching tube Q1, pressurizer U1 is by sample-offset circuit sampling output voltage, and driving switch pipe Q1, output voltage higher than threshold value pressurizer U1 make switching tube Q1 cut-off, output end voltage descends immediately, it is characterized in that, has charge-discharge circuit to jump to the contact of sample-offset circuit and pressurizer U1 from the contact of the drive end of input and pressurizer U1.
2. the communication base station and electric power voltage stabilizing circuit of anti-large electric current according to claim 1, is characterized in that, charge-discharge circuit comprises capacitor C 1.
3. the communication base station and electric power voltage stabilizing circuit of anti-large electric current according to claim 1, is characterized in that, switching tube Q1 is metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220649309 CN202978707U (en) | 2012-11-30 | 2012-11-30 | Communication base station power voltage stabilizing circuit having advantage of high current resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220649309 CN202978707U (en) | 2012-11-30 | 2012-11-30 | Communication base station power voltage stabilizing circuit having advantage of high current resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978707U true CN202978707U (en) | 2013-06-05 |
Family
ID=48519730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220649309 Expired - Fee Related CN202978707U (en) | 2012-11-30 | 2012-11-30 | Communication base station power voltage stabilizing circuit having advantage of high current resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634642A (en) * | 2017-11-10 | 2018-01-26 | 上海德朗能电子科技有限公司 | A kind of power isolation circuit and electric supply installation |
-
2012
- 2012-11-30 CN CN 201220649309 patent/CN202978707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634642A (en) * | 2017-11-10 | 2018-01-26 | 上海德朗能电子科技有限公司 | A kind of power isolation circuit and electric supply installation |
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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: 20130605 Termination date: 20181130 |