CN105682287A - Power supply circuit applied to fixed load and LED illuminating apparatus - Google Patents
Power supply circuit applied to fixed load and LED illuminating apparatus Download PDFInfo
- Publication number
- CN105682287A CN105682287A CN201610061314.1A CN201610061314A CN105682287A CN 105682287 A CN105682287 A CN 105682287A CN 201610061314 A CN201610061314 A CN 201610061314A CN 105682287 A CN105682287 A CN 105682287A
- Authority
- CN
- China
- Prior art keywords
- circuit
- load
- output terminal
- transformer
- resistance
- 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
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]
- H05B45/40—Details of LED load circuits
Abstract
The invention provides a power supply circuit applied to a fixed load and an LED illuminating apparatus. The power supply circuit applied to the fixed load comprises a rectifying circuit, a filter circuit, a self-oscillation circuit and a load circuit that are connected in sequence, wherein the self-oscillation circuit is used for performing self-oscillation on the filtered electric energy, then performing voltage and current regulation on the electric energy, and inputting the processed electric energy to the load circuit. The power supply circuit applied to the fixed load and the LED illuminating apparatus provided by the embodiments of the invention have the advantages of high output power factor and low harmonic distortion.
Description
Technical field
The present invention relates to field of power supplies, particularly relate to a kind of power source circuit and the LED light device that are applied to permanent load.
Background technology
Current green energy resource, energy-conserving and environment-protective, the life of low carbon is that current era people talk about maximum topics. This is the actual survey to scientific technological advance, also reflects people to the requirement of new life more high-quality simultaneously. When sun power, wind energy are all promoted as green energy resource time, LED (LightEmittingDiode, LED) product also ranks among vast market with energy-conserving and environment-protective new forms of energy. Wherein account for leading still LED daylight lamp. LED daylight lamp is economized on electricity up to more than 80%, and the life-span is more than 10 times of common fluorescent tube, degree of safety height, thermal diffusivity is strong, and light declines low, resistance to resistance, being almost non-maintaining, there is not the problem often being changed fluorescent tube, Inductive ballast, starter, the expense saved of about getting off half a year just can gain cost. LED lamp tube comes into huge numbers of families, and replacing conventional fluorescent will be a kind of inexorable trend.
But, the LED power of prior art uses resistance-capacitance depressurization, it may also be useful to the chip solution such as chip switch power supply scheme, chip constant current diode, and chip high voltage IC. The work-ing life of existing technology resistance-capacitance depressurization is short, and is required by electric capacity harsh, there is the shortcoming that circuit power factor value is low.
How to design a kind of long service life and the high power source circuit of output rating factor value is the problem that industry needs solution badly.
Summary of the invention
The main purpose of the present invention is to provide kind of the power source circuit and the LED light device that are applied to permanent load, it is intended to solve the technical problem that the power factor of the power supply output being applied to permanent load is low.
For achieving the above object, the present invention provides a kind of power source circuit being applied to permanent load, comprising:
Rectifying circuit, filtering circuit, self-sustained oscillation circuit and the load circuit connected successively; Described self-sustained oscillation circuit is used for through self-sustained oscillation and after carrying out voltage and current setting, filtered electric energy is inputed to load circuit.
Preferably, described self-sustained oscillation circuit comprises transformer, the first resistance, the 2nd resistance and triode, described transformer comprises the first input terminus, first output terminal of end of the same name each other, and each other the 2nd input terminus of end of the same name, the 2nd output terminal, described first resistance, the 2nd resistance are arranged in series between this base stage of the first output terminal of described transformer and three poles, the emtting electrode of described triode is connected with the 2nd output terminal of transformer with a resistance ground connection, the collector electrode of triode;
The input terminus of described transformer is connected on described first resistance and the 2nd resistance wire through the first electric capacity; Described filtering circuit output terminal is connected on the wire of described first resistance and transformer first output terminal.
Preferably, first input terminus of described load is connected with the first output terminal of described transformer, and the 2nd input terminus of load is connected with the 2nd output terminal of described transformer through a rectification diode, and the anode of described rectification diode is connected with the 2nd output terminal of described transformer.
Preferably, the first input end grounding of described load, the 2nd input terminus of load is connected with the 2nd output terminal of described transformer through a rectification diode, and the anode of described rectification diode is connected with the 2nd output terminal of described transformer.
Preferably, the first input terminus of described load, has been arranged in parallel resistance and electric capacity between the 2nd input terminus of load.
The present invention also provides a kind of LED light device, and it comprises the power source circuit being applied to permanent load described in above-mentioned arbitrary item.
Compared to prior art, in the power source circuit being applied to permanent load of the embodiment of the present invention and LED light device, by arranging self-sustained oscillation circuit for filtered electric energy is inputed to load circuit through self-sustained oscillation and after carrying out voltage and current setting so that the power factor height and the harmonic distortions that provide load circuit are little.
Therefore, the power source circuit being applied to permanent load of the embodiment of the present invention and LED light device have output rating factor height and the little advantage of harmonic distortion.
Accompanying drawing explanation
Fig. 1 is the structural representation of the protection circuit of the LED/light source of the present invention one preferred embodiments.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
It it is the structural representation of the power source circuit being applied to permanent load of the present invention one preferred embodiments with reference to Fig. 1, Fig. 1.
The described power source circuit being applied to permanent load, comprising: the rectifying circuit 10 connected successively, filtering circuit 20, self-sustained oscillation circuit 30 and load circuit 40; Described self-sustained oscillation circuit 30 is for inputing to load circuit 40 by filtered electric energy through self-sustained oscillation and after carrying out voltage and current setting. Described rectifying circuit 10 and filtering circuit 20 can be set to conventional rectifying circuit.
Specifically, described self-sustained oscillation circuit 30 comprises transformer T1, the first resistance R1, the 2nd resistance R2 and triode Q1, described transformer T1 comprises the first input terminus T10, the first output terminal T20 of end of the same name each other, and the 2nd input terminus T11, the 2nd output terminal T21 of end of the same name each other, described first resistance R1, the 2nd resistance R2 be arranged in series at described transformer T1 between the first output terminal T20 and the base stage B of triode Q1, the emitter E of described triode Q1 is connected through a resistance ground connection, the 2nd output terminal T21 of the collector electrode C and transformer T1 of triode Q1; First input terminus 41 of described load circuit 40, has been arranged in parallel resistance and electric capacity between the 2nd input terminus 42 of load circuit 40.
The first input terminus T10 of described transformer T1 is connected on described first resistance R1 and the 2nd resistance R2 wire through the first electric capacity C1; Described filtering circuit 20 output terminal 21 is connected on the wire of described first resistance R1 and transformer T1 first output terminal T10.
Further, first input terminus 41 of described load circuit 40 is connected with the first output terminal T10 of described transformer T1,2nd input terminus 42 of load circuit 40 is connected with the 2nd output terminal T21 of described transformer T1 through a rectification diode D1, and the anode of described rectification diode D is connected with the 2nd output terminal T21 of described transformer T1.
Further, in other embodiments, can also by the first input end grounding of described load circuit, the 2nd input terminus of load circuit is connected with the 2nd output terminal of described transformer through a rectification diode, and the anode of described rectification diode is connected with the 2nd output terminal of described transformer.
The principle of work of the above-mentioned power source circuit being applied to permanent load: feed circuit are through rectifying circuit 10 above, filtering circuit 20 rectification is considered ripple and is obtained pulsation direct current, by the resistance first resistance R1 for starting, 2nd resistance R2 provides base current to triode Q1, transformer T1 is just responding to transformer first output terminal 8, the inductive emf that transformer the 2nd output terminal 7 is negative, sense that auxiliary winding transformer first input terminus T10 is for just simultaneously, transformer the 2nd input terminus T11 is negative inductive emf, this electromotive force strengthens triode Q1 conducting further by the first electric capacity C1 (just started the first electric capacity C1 and be equivalent to short circuit), triode Q1 enters saturation conduction very soon. along with the first electric capacity C1 constantly charges, the base current being given to triode Q1 decline is provided. triode Q1 saturation conduction can not be maintained when dropping to and enter amplification district, collection radio stream can not linearly increase, now induction electric will definitely overturn, form transformer first output terminal 8 negative, the inductive emf that transformer the 2nd output terminal 7 is positive, it is negative that auxiliary winding forms a transformer first input terminus T10, transformer the 2nd input terminus T11 is positive inductive emf, transformer first input terminus T10 is negative, the inductive emf that transformer the 2nd input terminus T11 is positive aggravates triode Q1 further and turns off, first electric capacity C1 discharges. triode Q1 close have no progeny transformer T1 store fault offset out. complete when fault offset and repeat the above cycle.
In embodiments of the invention, when the load of load circuit 40 is fixing, usually the parameter of the first resistance R1, the 2nd resistance R2, transformer T1 and the first electric capacity C1 can be regulated can to obtain the electric current of load needs, and the output power factor value of load circuit 40 is higher, and harmonic distortion is little.
Compared to prior art, in the power source circuit being applied to permanent load of the embodiment of the present invention, by arranging self-sustained oscillation circuit 30 for filtered electric energy is inputed to load circuit 40 through self-sustained oscillation and after carrying out voltage and current setting so that the power factor height and the harmonic distortions that provide load circuit 40 are little.
The present invention also provides a kind of LED light device, and it comprises the above-mentioned power source circuit being applied to permanent load.
These are only the preferred embodiments of the present invention; not thereby the patent scope of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all it is included in the scope of patent protection of the present invention with reason.
Claims (6)
1. one kind is applied to the power source circuit of permanent load, it is characterised in that, comprising:
Rectifying circuit, filtering circuit, self-sustained oscillation circuit and the load circuit connected successively;Described self-sustained oscillation circuit is used for through self-sustained oscillation and after carrying out voltage and current setting, filtered electric energy is inputed to load circuit.
2. the power source circuit being applied to permanent load according to claim 1, it is characterized in that, described self-sustained oscillation circuit comprises transformer, first resistance, 2nd resistance and triode, described transformer comprises the first input terminus of end of the same name each other, first output terminal, and the 2nd input terminus of end of the same name each other, 2nd output terminal, described first resistance, 2nd resistance is arranged in series between this base stage of the first output terminal of described transformer and three poles, the emtting electrode of described triode is with a resistance ground connection, the collector electrode of triode is connected with the 2nd output terminal of transformer,
The input terminus of described transformer is connected on described first resistance and the 2nd resistance wire through the first electric capacity; Described filtering circuit output terminal is connected on the wire of described first resistance and transformer first output terminal.
3. the power source circuit being applied to permanent load according to claim 2, it is characterized in that, first input terminus of described load is connected with the first output terminal of described transformer, 2nd input terminus of load is connected with the 2nd output terminal of described transformer through a rectification diode, and the anode of described rectification diode is connected with the 2nd output terminal of described transformer.
4. the power source circuit being applied to permanent load according to claim 2, it is characterized in that, first input end grounding of described load, 2nd input terminus of load is connected with the 2nd output terminal of described transformer through a rectification diode, and the anode of described rectification diode is connected with the 2nd output terminal of described transformer.
5. the power source circuit being applied to permanent load according to claim 1, it is characterised in that, the first input terminus of described load, has been arranged in parallel resistance and electric capacity between the 2nd input terminus of load.
6. a LED light device, it comprises the power source circuit being applied to permanent load according to any one of the claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061314.1A CN105682287A (en) | 2016-01-29 | 2016-01-29 | Power supply circuit applied to fixed load and LED illuminating apparatus |
| PCT/CN2016/079764 WO2017128532A1 (en) | 2016-01-29 | 2016-04-20 | Power supply circuit applied to fixed load, and led illumination apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061314.1A CN105682287A (en) | 2016-01-29 | 2016-01-29 | Power supply circuit applied to fixed load and LED illuminating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105682287A true CN105682287A (en) | 2016-06-15 |
Family
ID=56303015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610061314.1A Pending CN105682287A (en) | 2016-01-29 | 2016-01-29 | Power supply circuit applied to fixed load and LED illuminating apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105682287A (en) |
| WO (1) | WO2017128532A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301013A (en) * | 2016-09-21 | 2017-01-04 | 深圳和而泰照明科技有限公司 | A kind of door lifter circuit and door lifter |
| CN106961209A (en) * | 2016-09-21 | 2017-07-18 | 深圳和而泰智能照明有限公司 | A kind of radio frequency reception power supply circuit and radio frequency reception terminal |
| CN108702823A (en) * | 2017-05-25 | 2018-10-23 | 深圳和而泰智能照明有限公司 | LED drive circuit, LED light device and electronic equipment |
| WO2018214104A1 (en) * | 2017-05-25 | 2018-11-29 | 深圳和而泰智能照明有限公司 | Led driving circuit and led lighting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572664Y (en) * | 2002-09-20 | 2003-09-10 | 毛灿豪 | Switch power source with short circuit protection |
| CN2705944Y (en) * | 2004-04-06 | 2005-06-22 | 毛灿豪 | Transistor switch power |
| JP2011100837A (en) * | 2009-11-05 | 2011-05-19 | Fdk Corp | Self-excitation type led driving circuit |
| CN201887981U (en) * | 2010-11-06 | 2011-06-29 | 何志雄 | Driving power supply of LED lamp |
| CN202488366U (en) * | 2012-03-31 | 2012-10-10 | 浙江路美思电气有限公司 | Energy-saving ultra-small switch power supply for plug and socket with electronic circuit |
| CN102970797A (en) * | 2012-11-15 | 2013-03-13 | 深圳和而泰照明科技有限公司 | Secondary output current limiting circuit and device |
| CN102984859B (en) * | 2012-11-16 | 2014-12-17 | 深圳和而泰照明科技有限公司 | Light-emitting diode (LED) driving circuit and light-emitting diode (LED) driving device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572715Y (en) * | 2002-07-10 | 2003-09-10 | 谭秀航 | Electronic inverter for dc fluorescent lamp |
| CN101541127B (en) * | 2009-04-13 | 2012-12-26 | 佛山市南海展晴玩具有限公司 | Neon-light electronic transformer |
| CN204291448U (en) * | 2014-11-10 | 2015-04-22 | 厦门通士达照明有限公司 | A kind of three gear adjusting control circuits |
| CN205546049U (en) * | 2016-01-29 | 2016-08-31 | 深圳和而泰照明科技有限公司 | Power supply circuit and LED lighting device |
-
2016
- 2016-01-29 CN CN201610061314.1A patent/CN105682287A/en active Pending
- 2016-04-20 WO PCT/CN2016/079764 patent/WO2017128532A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572664Y (en) * | 2002-09-20 | 2003-09-10 | 毛灿豪 | Switch power source with short circuit protection |
| CN2705944Y (en) * | 2004-04-06 | 2005-06-22 | 毛灿豪 | Transistor switch power |
| JP2011100837A (en) * | 2009-11-05 | 2011-05-19 | Fdk Corp | Self-excitation type led driving circuit |
| CN201887981U (en) * | 2010-11-06 | 2011-06-29 | 何志雄 | Driving power supply of LED lamp |
| CN202488366U (en) * | 2012-03-31 | 2012-10-10 | 浙江路美思电气有限公司 | Energy-saving ultra-small switch power supply for plug and socket with electronic circuit |
| CN102970797A (en) * | 2012-11-15 | 2013-03-13 | 深圳和而泰照明科技有限公司 | Secondary output current limiting circuit and device |
| CN102984859B (en) * | 2012-11-16 | 2014-12-17 | 深圳和而泰照明科技有限公司 | Light-emitting diode (LED) driving circuit and light-emitting diode (LED) driving device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301013A (en) * | 2016-09-21 | 2017-01-04 | 深圳和而泰照明科技有限公司 | A kind of door lifter circuit and door lifter |
| CN106961209A (en) * | 2016-09-21 | 2017-07-18 | 深圳和而泰智能照明有限公司 | A kind of radio frequency reception power supply circuit and radio frequency reception terminal |
| CN108702823A (en) * | 2017-05-25 | 2018-10-23 | 深圳和而泰智能照明有限公司 | LED drive circuit, LED light device and electronic equipment |
| WO2018214104A1 (en) * | 2017-05-25 | 2018-11-29 | 深圳和而泰智能照明有限公司 | Led driving circuit and led lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017128532A1 (en) | 2017-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205546049U (en) | Power supply circuit and LED lighting device | |
| CN105682287A (en) | Power supply circuit applied to fixed load and LED illuminating apparatus | |
| CN101742784A (en) | LED lamp and drive circuit thereof | |
| CN103458557A (en) | LED drive control circuit and LED lamp | |
| CN108365765A (en) | A kind of multiple-channel output single-end flyback switching power supply | |
| CN103369769A (en) | LED fly-back constant current driving circuit | |
| CN219535883U (en) | Power factor correction circuit and lamp | |
| CN101346027A (en) | Non-magnet ring electric ballast and fluorescent lamp using the same | |
| CN101277071A (en) | Power supply circuit | |
| CN112367748A (en) | Floating type buck-boost PFC circuit and LED driving power supply | |
| CN101212182B (en) | Power circuit | |
| CN204721217U (en) | Switching power circuit and electronic equipment | |
| CN109194165B (en) | AC-DC power converter | |
| CN104735845A (en) | Efficient 60-W LED driving power source | |
| CN218388013U (en) | Boosting constant-current driving circuit with built-in output short-circuit protection | |
| CN201947180U (en) | Non-isolated flyback switch power circuit | |
| CN103298204A (en) | Silicon controlled dimming LED lamp driver with open circuit protection function | |
| CN104638947A (en) | Isolation type alternating current and direct current conversion device and conversion method thereof | |
| CN208890677U (en) | A kind of automobile high power rectification circuit | |
| CN102891624B (en) | Pulse power stable output device | |
| CN208015577U (en) | A kind of RCC circuit drivers | |
| WO2015070515A1 (en) | Power conversion device and conversion method thereof | |
| CN102281669B (en) | Mains supply light-emitting diode (LED) constant current driving circuit | |
| CN211019369U (en) | L ED control circuit | |
| CN211018643U (en) | Half-bridge series resonance does not have stroboscopic power supply circuit, PCB board and power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170615 Address after: 518000 Guangdong province Shenzhen Guangming New District Gongming Street mold base root Yu Lu Industrial Park Building 4 layer heertai Applicant after: Shenzhen heertai Intelligent Lighting Co., Ltd. Address before: 518000 room D, block 201-202, Shenzhen Institute of Aerospace Science & technology innovation, Guangdong, south of Nanshan District Science & technology, ten Shenzhen Road, No. 6 Applicant before: Shenzhen H & T Intelligent Control Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |
|
| RJ01 | Rejection of invention patent application after publication |