CN107482762A - A kind of LED display power supply backup circuit - Google Patents
A kind of LED display power supply backup circuit Download PDFInfo
- Publication number
- CN107482762A CN107482762A CN201710728341.4A CN201710728341A CN107482762A CN 107482762 A CN107482762 A CN 107482762A CN 201710728341 A CN201710728341 A CN 201710728341A CN 107482762 A CN107482762 A CN 107482762A
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- China
- Prior art keywords
- resistance
- relay
- power supply
- led display
- power source
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Audible And Visible Signals (AREA)
Abstract
The invention discloses a kind of LED display power supply backup circuit, including main power source, backup battery and relay, main power source and backup battery connect relay respectively, and main power source connects display module by backward dioded respectively with backup battery, structural principle of the present invention is simple, security performance is high, power supply can be backed up, it is ensured that the normal work of LED display.
Description
Technical field
The present invention relates to power supply backup technical field, specially a kind of LED display power supply backup circuit.
Background technology
The application of LED display is very extensive, and particularly some important activities all be unable to do without LED display, such as Olympic Games
Meeting, live party etc., in these important activities, absolutely not display screen is allowed to break down, the power supply in display screen
It is a high performance components, easily damages.To ensure these display screens normal operation when in use, power supply backup is must
Must.
The content of the invention
It is an object of the invention to provide a kind of LED display power supply backup circuit, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides following technical scheme：A kind of LED display power supply backup circuit, including
Main power source, backup battery and relay, described main power source one end and backup battery one end connect relay, the main electricity respectively
The source other end connects backward dioded A positive poles and diode cathode respectively, and the backward dioded A negative poles connect display module,
The backup battery other end connects backward dioded B positive poles, and the backward dioded B negative poles connect display module, described aobvious
Show wired in parallel electrochemical capacitor C and be grounded；The relay both ends are connected in parallel voltage-stabiliser tube, electrochemical capacitor B and are grounded.
Preferably, in addition to triode, described transistor base connection resistance B one end, colelctor electrode connect resistance C one end,
Emitter stage connects resistance D one end and resistance E one end respectively, and the resistance E other ends connect relay and diode cathode respectively, described
The resistance D other ends are grounded, and the resistance B other ends connect electrochemical capacitor A negative poles and resistance A one end, another terminations of resistance A respectively
Ground, the electrochemical capacitor A positive poles, the resistance C other ends connect power end with relay.
Preferably, the triode uses NPN triode.
Compared with prior art, the beneficial effects of the invention are as follows：Structural principle of the present invention is simple, and security performance is high, can
Power supply is backed up, when firm start is powered, electrochemical capacitor 1b provides bias voltage to triode, and make triode ON to
Relay is powered, and relay work adhesive, is powered to main power source；Voltage-stabiliser tube is pressure stabilization function, and electrochemical capacitor 2b plays energy storage,
Ensure that relay has enough initial pickup time.After electrochemical capacitor 1b is charged to certain time, triode is closed, by main electricity
Source exports to power to relay, and relay is always maintained at attracting state.Main power source works always provides power supply to display module.When
Main power source damage no current output when, relay unpowered and flick, it is normally closed get an electric shock contact, and to backup battery power, backup
Power supply is started working, and continues to power to display module；It is able to ensure that the normal work of LED display.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
In figure：1st, main power source；2nd, backup battery；3rd, relay；4th, diode；5th, display module；6th, voltage-stabiliser tube；7th, three pole
Pipe.
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 describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：A kind of LED display power supply backup circuit, including main power source
1st, backup battery 2 and relay 3, the one end of main power source 1 and the one end of backup battery 2 connect relay 3 respectively, and main power source 1 is another
End connects backward dioded A1c positive poles and the positive pole of diode 4, backward dioded A1c negative poles connection display module 5, backup respectively
The other end of power supply 2 connects backward dioded B2c positive poles, backward dioded B2c negative poles connection display module 5, the parallel connection of display module 5
Electrochemical capacitor C3b is simultaneously grounded；The both ends of relay 3 are connected in parallel voltage-stabiliser tube 6, electrochemical capacitor B2b and are grounded.
In the present invention, in addition to triode 7, the described base stage of triode 7 connection resistance B2a one end, colelctor electrode connection resistance
C3a one end, emitter stage connect resistance D4a one end and resistance E5a one end respectively, and the resistance E5a other ends connect the He of relay 3 respectively
The negative pole of diode 4, resistance D4a other ends ground connection, the resistance B2a other ends connect respectively electrochemical capacitor A1b negative poles and
Resistance A1a one end, resistance A1a other ends ground connection, electrolysis electric A1b positive poles, the resistance C3a other ends and the relay 3 connect electricity
Source；Triode 7 uses NPN triode.
For the present invention when firm start is powered, electrochemical capacitor 1b provides bias voltage to triode, and make triode ON to
Relay is powered, and relay work adhesive, is powered to main power source；Voltage-stabiliser tube is pressure stabilization function, and electrochemical capacitor 2b plays energy storage,
Ensure that relay has enough initial pickup time.After electrochemical capacitor 1b is charged to certain time, triode is closed, by main electricity
Source exports to power to relay, and relay is always maintained at attracting state.Main power source works always provides power supply to display module.When
Main power source damage no current output when, relay unpowered and flick, it is normally closed get an electric shock contact, and to backup battery power, backup
Power supply is started working, and continues to power to display module.In summary, structural principle of the present invention is simple, and security performance is high, can be right
Power supply is backed up, it is ensured that the normal work of LED display.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of LED display power supply backup circuit, including main power source（1）, backup battery（2）And relay（3）, its feature
It is：The main power source（1）One end and backup battery（2）One end connects relay respectively（3）, the main power source（1）The other end
Backward dioded A (1c) positive poles and diode (4) positive pole are connected respectively, and backward dioded A (1c) the negative pole connection shows mould
Block（5）, the backup battery（2）The other end connects backward dioded B (2c) positive pole, and backward dioded B (2c) negative pole connects
Connect display module（5）, the display module（5）Parallel electrolytic electric capacity C (3b) is simultaneously grounded；The relay（3）Both ends are in parallel even
Connect voltage-stabiliser tube（6）, electrochemical capacitor B (2b) and be grounded.
A kind of 2. LED display power supply backup circuit according to claim 1, it is characterised in that：Also include triode
（7）, the triode（7）Base stage connects resistance B (2a) one end, colelctor electrode connection resistance C (3a) one end, and emitter stage connects respectively
Resistance D (4a) one end and resistance E (5a) one end, resistance E (5a) other end connect relay (3) and diode (4) negative pole respectively,
Resistance D (4a) other end ground connection, resistance B (2a) other end connect electrochemical capacitor A (1b) negative poles and resistance A respectively
(1a) one end, resistance A (1a) other end ground connection, electrolysis electric A (1b) positive pole, resistance C (3a) other ends and the relay (3) are even
Connect power end.
A kind of 3. LED display power supply backup circuit according to claim 2, it is characterised in that：The triode（7）Adopt
Use NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728341.4A CN107482762A (en) | 2017-08-23 | 2017-08-23 | A kind of LED display power supply backup circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728341.4A CN107482762A (en) | 2017-08-23 | 2017-08-23 | A kind of LED display power supply backup circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107482762A true CN107482762A (en) | 2017-12-15 |
Family
ID=60602181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710728341.4A Pending CN107482762A (en) | 2017-08-23 | 2017-08-23 | A kind of LED display power supply backup circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107482762A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5661645A (en) * | 1996-06-27 | 1997-08-26 | Hochstein; Peter A. | Power supply for light emitting diode array |
| CN201838298U (en) * | 2010-09-07 | 2011-05-18 | 深圳市洲明科技股份有限公司 | Two-backup circuit and two-backup system of LED display screen power supply |
| CN103184964A (en) * | 2013-04-01 | 2013-07-03 | 谷润雨 | Automotive delayed start protection system |
| CN205039620U (en) * | 2015-10-27 | 2016-02-17 | 厦门市华软科技有限公司 | LED display screen signal battery dual backup circuit |
| CN105356586A (en) * | 2015-12-08 | 2016-02-24 | 深圳市通普科技有限公司 | LED display screen supply circuit |
| CN205212530U (en) * | 2015-10-26 | 2016-05-04 | 中国铁道科学研究院电子计算技术研究所 | A power supply circuit for subway passenger information system display screen |
| CN106026365A (en) * | 2016-07-06 | 2016-10-12 | 合肥指南针电子科技有限责任公司 | Network intelligent dual-backup power supply |
| CN207074888U (en) * | 2017-08-23 | 2018-03-06 | 浙江德广信电子科技股份有限公司 | A kind of LED display power supply backup circuit |
-
2017
- 2017-08-23 CN CN201710728341.4A patent/CN107482762A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5661645A (en) * | 1996-06-27 | 1997-08-26 | Hochstein; Peter A. | Power supply for light emitting diode array |
| CN201838298U (en) * | 2010-09-07 | 2011-05-18 | 深圳市洲明科技股份有限公司 | Two-backup circuit and two-backup system of LED display screen power supply |
| CN103184964A (en) * | 2013-04-01 | 2013-07-03 | 谷润雨 | Automotive delayed start protection system |
| CN205212530U (en) * | 2015-10-26 | 2016-05-04 | 中国铁道科学研究院电子计算技术研究所 | A power supply circuit for subway passenger information system display screen |
| CN205039620U (en) * | 2015-10-27 | 2016-02-17 | 厦门市华软科技有限公司 | LED display screen signal battery dual backup circuit |
| CN105356586A (en) * | 2015-12-08 | 2016-02-24 | 深圳市通普科技有限公司 | LED display screen supply circuit |
| CN106026365A (en) * | 2016-07-06 | 2016-10-12 | 合肥指南针电子科技有限责任公司 | Network intelligent dual-backup power supply |
| CN207074888U (en) * | 2017-08-23 | 2018-03-06 | 浙江德广信电子科技股份有限公司 | A kind of LED display power supply backup circuit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171215 |