CN107222094A - A kind of overvoltage protection communication power supply circuit - Google Patents
A kind of overvoltage protection communication power supply circuit Download PDFInfo
- Publication number
- CN107222094A CN107222094A CN201710657889.4A CN201710657889A CN107222094A CN 107222094 A CN107222094 A CN 107222094A CN 201710657889 A CN201710657889 A CN 201710657889A CN 107222094 A CN107222094 A CN 107222094A
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- power supply
- diode
- overvoltage protection
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of overvoltage protection communication power supply circuit; including buzzer B, electric capacity C2, triode V1, chip IC 1 and triode V3; the base stage connection resistance R1 of triode V1 one end; triode V1 colelctor electrode connection resistance R2; resistance R2 other end connection resistance R3, electric capacity C1 and the pin 2 of chip IC 1, the resistance R3 other end connection adjustable resistance R4 fixing end, triode V3 emitter stage, resistance R6, diode D2 anode and power supply VCC.Overvoltage protection communication power supply circuit of the present invention makes improvements for existing communication apparatus power supply; pass through the combination of voltage-regulator diode, triode and voltage comparator; realize the protection to output loading voltage; also there is the function of preventing that critical point from beating simultaneously; circuit also has the function for the alarm that has a power failure simultaneously, therefore has vdiverse in function, cost low and control accurately advantage.
Description
Technical field
The present invention relates to a kind of power supply, specifically a kind of overvoltage protection communication power supply circuit.
Background technology
With continuing to develop for power industry, increasing household electrical appliance enter ordinary people family, especially existing
Electronic industry develop and its it is rapid, from illuminator to refrigerator, air-conditioning, then to the electric car, electricity constantly promoted in recent years
Magnetic stove, it may be said that the stability of domestic electric network is directly connected to daily life, and power circuit is being transferred to family's electricity
Often occur the phenomenons such as electromagnetic interference, power network fluctuation when net, cause the situation for overvoltage occur with electric loading, easily cause use
Electric loading is burnt, especially in communication equipment, and inside communication equipment is wirelessly transferred part and can caused by voltage pulsation
Noise increases, and influences communication quality, and traditional overvoltage crowbar is mostly complicated, and cost of manufacture is high, and easily in mistake
Press and shaken near critical value, its protecting effect is not perfect enough.
The content of the invention
It is an object of the invention to provide a kind of overvoltage protection communication power supply circuit, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of overvoltage protection communication power supply circuit, including buzzer B, electric capacity C2, triode V1, chip IC 1 and triode
V3, the triode V1 base stage connection resistance R1 one end, triode V1 colelctor electrode connection resistance R2, resistance R2's is another
End connection resistance R3, electric capacity C1 and chip IC 1 pin 2, a resistance R3 other end connection adjustable resistance R4 fixing end,
Triode V3 emitter stage, resistance R6, diode D2 anode and power supply VCC, triode V1 emitter stage connection electric capacity C1's
The other end, resistance R5, triode V2 colelctor electrode and load L, resistance R6 other end connecting triode V4 base stage, triode
V4 emitter stage connection resistance R8, adjustable resistance R4 another fixing end connection resistance R5 other end and triode V2 hair
Emitter-base bandgap grading, adjustable resistance R4 sliding end connects the pin 3 of chip IC 1, triode V4 colelctor electrode connection buzzing B, triode V2
Base stage connection resistance R7 and chip IC 1 pin 6, resistance R7 other end connecting triode V3 base stage, diode D2's
Negative electrode connects electric capacity C2 and resistance R8, and resistance R8 other end connecting triode V4 emitter stage, triode V3 colelctor electrode connects
Connect the load L other end and diode D1 negative electrode, the diode D1 anode connection resistance R1 other end.
It is used as the preferred scheme of the present invention：The diode D1 is voltage-regulator diode.
It is used as the preferred scheme of the present invention：The power supply VCC be by civil power be depressured through over commutation after obtained pulsating direct current
Electricity.
It is used as the preferred scheme of the present invention：The model OP07 of the chip IC 1.
It is used as the preferred scheme of the present invention：The triode V3 is PNP type triode.
Compared with prior art, the beneficial effects of the invention are as follows：Overvoltage protection communication power supply circuit of the present invention is for existing
Communication apparatus power supply make improvements, by the combination of voltage-regulator diode, triode and voltage comparator, realize negative to output
The protection of voltage is carried, while also there is the function of preventing that critical point from beating, while circuit also has the function for the alarm that has a power failure, therefore
It is low and control accurately advantage with vdiverse in function, cost.
Brief description of the drawings
Fig. 1 is the circuit diagram of overvoltage protection communication power supply circuit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, a kind of overvoltage protection communication power supply circuit, including buzzer B, electric capacity C2, triode V1, chip
IC1 and triode V3, the triode V1 base stage connection resistance R1 one end, triode V1 colelctor electrode connection resistance R2,
Resistance R2 other end connection resistance R3, electric capacity C1 and the pin 2 of chip IC 1, resistance R3 other end connection adjustable resistance R4
A fixing end, triode V3 emitter stage, resistance R6, diode D2 anode and power supply VCC, triode V1 emitter stage
Connect the electric capacity C1 other end, resistance R5, triode V2 colelctor electrode and load L, resistance R6 other end connecting triode V4
Base stage, triode V4 emitter stage connection resistance R8, adjustable resistance R4 another fixing end connection resistance R5 other end
With triode V2 emitter stage, adjustable resistance R4 sliding end connects the pin 3 of chip IC 1, triode V4 colelctor electrode connection
Buzzing B, triode V2 base stage connection resistance R7 and the pin 6 of chip IC 1, resistance R7 other end connecting triode V3 base
Pole, diode D2 negative electrode connection electric capacity C2 and resistance R8, resistance R8 other end connecting triode V4 emitter stage, triode
The V3 colelctor electrode connection load L other end and diode D1 negative electrode, the diode D1 anode connection resistance R1 other end.
Diode D1 is voltage-regulator diode.Power supply VCC be by civil power be depressured through over commutation after obtained Rectified alternating current.Core
Piece IC1 model OP07.Triode V3 is PNP type triode.
The present invention operation principle be：The core parts of circuit are voltage comparator ic 1, the electricity of its pin of positive input 3
Pressure after adjustable resistance R4 and resistance R5 partial pressures by obtaining, and its pin voltage of reverse input end 2 is by resistance R3, electric capacity C1 etc.
Element partial pressure is obtained, in the case of voltage is normal, and 2 pin voltages of chip IC 1 are higher than 3 pin voltages, therefore its pin of output end 6 is low
Level, now triode V2, V3 be both turned on, triode V2 cut-offs load L normal works, run into overvoltage of power supply beyond critical
During value, voltage-regulator diode D1 is breakdown, and triode V1 base stage obtains electric so that 2 pin voltages of chip IC 1 are less than 3 pin voltages, core
Piece IC1 exports high level, triode V3 cut-offs, while triode V2 ends, by resistance R5, now chip IC 13 pin partial pressure values
Rise, therefore when voltage is slightly less than over-pressed critical value, 3 pin voltages of chip IC 1 are still higher than 2 pin voltages, and circuit will not
Action, prevents the shake of its Near The Critical Point.
Resistance R6, triode V4, electric capacity C2 and buzzer B composition power failure warning circuits in circuit, electric capacity C2 select 220
μ F super capacitor, when VCC voltage is normal, due to PNP triode V4 on state characteristic, now V4 is not turned on, and works as buzzing
Device does not send sound, when running into VCC disconnections, and electric capacity C2 process resistance R8 discharges to triode V4 emitter stage, V4 conductings,
Buzzer B sends alarm.The power supply failed for prompting.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (5)
1. a kind of overvoltage protection communication power supply circuit, including buzzer B, electric capacity C2, triode V1, chip IC 1 and triode V3,
Characterized in that, the base stage connection resistance R1 of triode V1 one end, triode V1 colelctor electrode connection resistance R2, resistance
R2 other end connection resistance R3, electric capacity C1 and the pin 2 of chip IC 1, the one of resistance R3 other end connection adjustable resistance R4
Individual fixing end, triode V3 emitter stage, resistance R6, diode D2 anode and power supply VCC, triode V1 emitter stage connection
The electric capacity C1 other end, resistance R5, triode V2 colelctor electrode and load L, resistance R6 other end connecting triode V4 base
Pole, triode V4 emitter stage connection resistance R8, adjustable resistance R4 another fixing end connection resistance R5 other end and three
Pole pipe V2 emitter stage, adjustable resistance R4 sliding end connects the pin 3 of chip IC 1, triode V4 colelctor electrode connection buzzing
B, triode V2 base stage connection resistance R7 and the pin 6 of chip IC 1, resistance R7 other end connecting triode V3 base stage,
Diode D2 negative electrode connection electric capacity C2 and resistance R8, resistance R8 other end connecting triode V4 emitter stage, triode V3
Colelctor electrode connection load L the other end and diode D1 negative electrode, the diode D1 anode connection resistance R1 other end.
2. a kind of overvoltage protection communication power supply circuit according to claim 1, it is characterised in that the diode D1 and two
Pole pipe D2 is voltage-regulator diode.
3. a kind of overvoltage protection communication power supply circuit according to claim 1, it is characterised in that the power supply VCC be by
The Rectified alternating current that civil power is obtained after being depressured through over commutation.
4. a kind of overvoltage protection communication power supply circuit according to claim 1, it is characterised in that the type of the chip IC 1
Number be OP07.
5. a kind of overvoltage protection communication power supply circuit according to claim 1, it is characterised in that the triode V3 is
PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710657889.4A CN107222094A (en) | 2017-08-03 | 2017-08-03 | A kind of overvoltage protection communication power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710657889.4A CN107222094A (en) | 2017-08-03 | 2017-08-03 | A kind of overvoltage protection communication power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107222094A true CN107222094A (en) | 2017-09-29 |
Family
ID=59953907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710657889.4A Withdrawn CN107222094A (en) | 2017-08-03 | 2017-08-03 | A kind of overvoltage protection communication power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107222094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730597A (en) * | 2018-04-09 | 2018-11-02 | 杨东雨 | A kind of solenoid valve overvoltage protection starting switch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217486U (en) * | 2011-07-20 | 2012-05-09 | 青岛海信电器股份有限公司 | Protection circuit, backlight module and liquid crystal display (LCD) device |
| CN202906436U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Overvoltage automatic power off protector |
| CN106405204A (en) * | 2016-12-01 | 2017-02-15 | 郑州艾莫弗信息技术有限公司 | Voltage alarm circuit used for computer |
| CN106648010A (en) * | 2016-12-27 | 2017-05-10 | 郑州诚合信息技术有限公司 | Computer system safety power source |
| CN107147074A (en) * | 2017-07-08 | 2017-09-08 | 佛山市正略信息科技有限公司 | A kind of overvoltage protection switch circuit based on voltage-regulator diode |
| CN207490756U (en) * | 2017-08-03 | 2018-06-12 | 深圳泽土网络信息有限公司 | A kind of overvoltage protection communication power supply circuit |
-
2017
- 2017-08-03 CN CN201710657889.4A patent/CN107222094A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217486U (en) * | 2011-07-20 | 2012-05-09 | 青岛海信电器股份有限公司 | Protection circuit, backlight module and liquid crystal display (LCD) device |
| CN202906436U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Overvoltage automatic power off protector |
| CN106405204A (en) * | 2016-12-01 | 2017-02-15 | 郑州艾莫弗信息技术有限公司 | Voltage alarm circuit used for computer |
| CN106648010A (en) * | 2016-12-27 | 2017-05-10 | 郑州诚合信息技术有限公司 | Computer system safety power source |
| CN107147074A (en) * | 2017-07-08 | 2017-09-08 | 佛山市正略信息科技有限公司 | A kind of overvoltage protection switch circuit based on voltage-regulator diode |
| CN207490756U (en) * | 2017-08-03 | 2018-06-12 | 深圳泽土网络信息有限公司 | A kind of overvoltage protection communication power supply circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730597A (en) * | 2018-04-09 | 2018-11-02 | 杨东雨 | A kind of solenoid valve overvoltage protection starting switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170929 |