CN106211479B - A kind of intelligent protection circuit for buffering transient high-current - Google Patents
A kind of intelligent protection circuit for buffering transient high-current Download PDFInfo
- Publication number
- CN106211479B CN106211479B CN201610760745.7A CN201610760745A CN106211479B CN 106211479 B CN106211479 B CN 106211479B CN 201610760745 A CN201610760745 A CN 201610760745A CN 106211479 B CN106211479 B CN 106211479B
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- resistance
- current
- resistor
- circuit
- control module
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 11
- 230000001052 transient effect Effects 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/025—Current limitation using field effect transistors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The present invention relates to a kind of intelligent protection circuit for buffering transient high-current; including Intelligent Measurement control module and buffering current circuit; Intelligent Measurement control module is all connected with electric equipment, buffer current circuit, normal work circuit; when the input current of electric equipment transfinites; the output of electric equipment is connected to buffer current circuit by Intelligent Measurement control module; when the input current of electric equipment does not transfinite, the output of electric equipment is connected to normal work circuit by Intelligent Measurement control module.The buffer current circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, diode, triode, FET.The resistance value of the 3rd resistor is more than or equal to threshold value/maximum impact electric current of triode.The present invention compared with prior art, has advantages below and effect：It is reasonable in design, the risk of transient high-current can be buffered, reduces maintenance replacement cost, makes electrical work in more stable state.
Description
Technical field
The present invention relates to a kind of intelligent protection circuit for buffering transient high-current, is mainly used in various containing LED driving electricity
In the circuit of source and adapter, such as the communication apparatus such as computer, household electrical appliance, lamp lighting etc..
Background technology
LED drive power and adapter have the heavy impulse current of moment sometimes, cause the appliance life of rear class to shorten very
To damage, therefore a kind of protection circuit for preventing from impacting circuit of research and development has larger realistic meaning.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and offer is a kind of reasonable in design,
The intelligent protection circuit of transient high-current can be buffered, substantially reduces the risk of heavy impulse current, maintenance replacement cost is reduced, makes
Electrical work is in more stable state.
Technical scheme is used by the present invention solves the above problems：The intelligent protection circuit of the buffering transient high-current,
Including Intelligent Measurement control module and buffering current circuit, Intelligent Measurement control module and electric equipment, buffer current circuit, just
Normal operating circuit is all connected with, and when the input current of electric equipment transfinites, Intelligent Measurement control module is by the output of electric equipment
Buffer current circuit is connected to, when the input current of electric equipment does not transfinite, Intelligent Measurement control module is by the defeated of electric equipment
Go out to be connected to normal work circuit.
Buffer current circuit of the present invention includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, diode, triode, FET, first resistor one terminate dc source, and the first resistor other end connects second resistance respectively
One end, diode cathode, transistor collector, diode cathode, transistor emitter, the 4th resistance one end are connected to power supply
Ground, transistor base are connected with 3rd resistor one end, and the second resistance other end is connected with fet gate, and 3rd resistor is another
End, the 4th resistance other end are connected with FET drain, and the 5th resistance uses wire resistor, FET source electrode and the 5th electricity
Winding terminal connection is hindered, the 5th resistance other end is connected with Intelligent Measurement control module.
The resistance value of 3rd resistor of the present invention is more than or equal to threshold value/maximum impact electric current of triode, the 5th resistance
For absorbing current spike.
The present invention compared with prior art, has advantages below and effect：It is reasonable in design, instantaneous big electricity can be buffered
The risk of stream, maintenance replacement cost is reduced, make electrical work in more stable state.
Brief description of the drawings
Fig. 1 is the principle schematic of the embodiment of the present invention.
Embodiment
It is described in further detail below in conjunction with the accompanying drawings and by embodiment to the application, following examples are to this Shen
Explanation please and the application is not limited to following examples.
Referring to Fig. 1, the intelligent protection circuit of the present embodiment buffering transient high-current is by Intelligent Measurement control module 1 and buffering
Current circuit forms.The Intelligent Measurement control module 1 is made up of one-chip computer module, for detecting the input of electric equipment 3 electricity
Whether stream transfinites, and when electric current transfinites, Intelligent Measurement control module 1 opens the output of electric equipment 3 by the controllable of its inside
Powered-down road（Analog output）Turn to buffer current circuit（Protection circuit）, instantaneous large-current is preferentially flowed through the protection electricity of design
Road, protection circuit can accurately control flowed through upper current limit, and can absorb pulse energy, impact the input of whole system
Electric current maintains a relatively stable level.When instantaneous large-current disappears, system worked well, Intelligent Measurement control module 1 can
Control on-off circuit enters normal mode of operation, system worked well, the i.e. output of electric equipment 3 directly with normal work circuit 4
Connection.Wherein Intelligent Measurement control module 1 can use prior art to realize.
The buffer current circuit of the present embodiment is made up of analog circuit, including first resistor R1, second resistance R2, the 3rd electricity
It is straight to hinder R3, the 4th resistance R4, the 5th resistance R5, diode D1, triode Q1, FET Q2, first resistor R1 a termination
Power supply 2 is flowed, the other end connects second resistance R2 one end, diode D1 negative poles, triode Q1 colelctor electrodes respectively, diode D1 positive poles,
With being connected to power supply, triode Q1 base stages are connected with 3rd resistor R3 one end for triode Q1 emitter stages, the 4th resistance R4 one end, the
The two resistance R2 other ends are connected with FET Q2 grids, the 3rd resistor R3 other ends, the 4th resistance R4 other ends and field-effect
Pipe Q2 drain electrode connections, FET Q2 source electrodes are connected with the 5th resistance R5 winding terminals, the 5th resistance R5 other ends, normal work electricity
The input on road 4 is connected with the output of Intelligent Measurement control module 1, and Intelligent Measurement control module 1 is connected with electric equipment 3, detection
It is inputted and controls its output, and electric equipment 3 is connected with dc source 2.
The present embodiment 3rd resistor R3 resistance values >=triode Q1 threshold value/maximum impact electric current.
Every simple deformation of the invention or combination, it is considered that fall into protection scope of the present invention.
Claims (2)
1. a kind of intelligent protection circuit for buffering transient high-current, including Intelligent Measurement control module and buffering current circuit, intelligence
Control module can be detected to be all connected with electric equipment, buffer current circuit, normal work circuit, when the input current of electric equipment
When transfiniting, the output of electric equipment is connected to buffer current circuit by Intelligent Measurement control module, when the input current of electric equipment
When not transfiniting, the output of electric equipment is connected to normal work circuit, the buffer current circuit bag by Intelligent Measurement control module
Include first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, diode, triode, FET, the first electricity
The termination dc source of resistance one, the first resistor other end connect second resistance one end, diode cathode, transistor collector respectively, and two
With being connected to power supply, transistor base is connected with 3rd resistor one end for pole pipe positive pole, transistor emitter, the 4th resistance one end,
The second resistance other end is connected with fet gate, the 3rd resistor other end, the 4th resistance other end and FET drain
Connection, the 5th resistance use wire resistor, and FET source electrode is connected with the 5th resistance winding terminal, the 5th resistance other end and intelligence
Control module connection can be detected.
2. the intelligent protection circuit of transient high-current is buffered according to claim 1, it is characterised in that：The 3rd resistor
Resistance value is more than or equal to threshold value/maximum impact electric current of triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610760745.7A CN106211479B (en) | 2016-08-30 | 2016-08-30 | A kind of intelligent protection circuit for buffering transient high-current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610760745.7A CN106211479B (en) | 2016-08-30 | 2016-08-30 | A kind of intelligent protection circuit for buffering transient high-current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106211479A CN106211479A (en) | 2016-12-07 |
| CN106211479B true CN106211479B (en) | 2018-02-02 |
Family
ID=58088826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610760745.7A Active CN106211479B (en) | 2016-08-30 | 2016-08-30 | A kind of intelligent protection circuit for buffering transient high-current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106211479B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181372B (en) * | 2020-03-02 | 2021-02-02 | 北京曙光航空电气有限责任公司 | Direct current bus current limiting circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374380A (en) * | 1979-01-27 | 1983-02-15 | Robert Bosch Gmbh | Automotive electrical network voltage regulation monitoring circuit |
| CN101694938A (en) * | 2009-10-27 | 2010-04-14 | 浪潮电子信息产业股份有限公司 | Surging current suppression method |
| CN202633918U (en) * | 2012-04-11 | 2012-12-26 | 佛山市顺德区瑞德电子实业有限公司 | MOS pipe over-current self-recovery protection circuit |
| CN204190374U (en) * | 2014-06-19 | 2015-03-04 | 安徽华东光电技术研究所 | A kind of DC power supply anti-surge protection circuit |
| CN204391699U (en) * | 2015-01-23 | 2015-06-10 | 南京优倍电气有限公司 | A kind of current foldback circuit based on triode |
| CN105356420A (en) * | 2015-12-09 | 2016-02-24 | 江苏天安智联科技股份有限公司 | Power supply protection circuit based on triodes |
| CN206061217U (en) * | 2016-08-30 | 2017-03-29 | 宁波耀泰电器有限公司 | The intelligent protection circuit of buffering transient high-current |
-
2016
- 2016-08-30 CN CN201610760745.7A patent/CN106211479B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374380A (en) * | 1979-01-27 | 1983-02-15 | Robert Bosch Gmbh | Automotive electrical network voltage regulation monitoring circuit |
| CN101694938A (en) * | 2009-10-27 | 2010-04-14 | 浪潮电子信息产业股份有限公司 | Surging current suppression method |
| CN202633918U (en) * | 2012-04-11 | 2012-12-26 | 佛山市顺德区瑞德电子实业有限公司 | MOS pipe over-current self-recovery protection circuit |
| CN204190374U (en) * | 2014-06-19 | 2015-03-04 | 安徽华东光电技术研究所 | A kind of DC power supply anti-surge protection circuit |
| CN204391699U (en) * | 2015-01-23 | 2015-06-10 | 南京优倍电气有限公司 | A kind of current foldback circuit based on triode |
| CN105356420A (en) * | 2015-12-09 | 2016-02-24 | 江苏天安智联科技股份有限公司 | Power supply protection circuit based on triodes |
| CN206061217U (en) * | 2016-08-30 | 2017-03-29 | 宁波耀泰电器有限公司 | The intelligent protection circuit of buffering transient high-current |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106211479A (en) | 2016-12-07 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. CN8, Far East Industrial City, Ningbo City, Zhejiang Province, 315400 Patentee after: Ningbo Yaotai Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: No. CN8, Far East Industrial City, Ningbo City, Zhejiang Province, 315400 Patentee before: Ningbo UTEC Electric Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |