CN205142591U - LED supply circuit , LED power, LED fluorescent lamp - Google Patents
LED supply circuit , LED power, LED fluorescent lamp Download PDFInfo
- Publication number
- CN205142591U CN205142591U CN201520827450.8U CN201520827450U CN205142591U CN 205142591 U CN205142591 U CN 205142591U CN 201520827450 U CN201520827450 U CN 201520827450U CN 205142591 U CN205142591 U CN 205142591U
- Authority
- CN
- China
- Prior art keywords
- circuit
- led
- input
- output
- power factor
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model relates to a LED supply circuit, LED power, LED fluorescent lamp. This LED supply circuit includes overvoltage crowbar, rectification filter circuit, electromagnetic interference circuit, power factor correction circuit and filtering smooth circuit, overvoltage crowbar is used for preventing the too big protection of voltage back level circuit, rectification filter circuit is used for turning into the direct current with the electric main, it is right that the electromagnetic interference circuit is used for the direct current carries out filtering, the power factor correction circuit is used for stepping down to the signal of post -filter, proofreaies and correct power factor, filtering smooth circuit is used for carrying out filtering to the signal after stepping down. The utility model discloses relate to a LED power, LED fluorescent lamp simultaneously. The utility model provides a technical scheme through setting up electromagnetic interference circuit, power factor correction circuit and filtering smooth circuit, has high power factor, high conversion efficiency's characteristics, accords with CE, UL's etc. EMC standard.
Description
Technical field
The utility model relates to LED daylight lamp power technique fields, more particularly, relates to a kind of LED power supply circuits, LED power, LED daylight lamp.
Background technology
Along with the development of LED and heat dissipation technology, the stability of LED has reached reasonable level, and the light decay of LED and brightness can reach the requirement of LED general illumination.The problem of LED driving power wants serious many comparatively speaking, be the main cause causing dead lamp or flicker, that is, LED driving power has become the short slab of LED quality, according to Law of Barrel, the life-span of LED driving power is exactly the life-span of LED.
LED daylight lamp is as a major member of LED illumination, and development in recent years is rapid, as long as the starter of traditional fluorescent lamp is removed by LED daylight lamp, directly installs and can use, greatly promote the development of LED daylight lamp.And in recent years, along with the continuous reduction of cost, make LED daylight lamp enter general lighting field and become more and more reality.
LED daylight lamp generally adopts built-in at present, and namely LED daylight lamp driving power is directly placed in LED daylight lamp enclosure (generally having back-Laying type and plug type two kinds), makes LED daylight lamp integrally, as long as access civil power can use.Along with application is more and more extensive, also more and more higher to the power factor (PF) of daylight lamp power source, efficiency, stability and cost requirement.
Utility model content
The technical problem that the utility model solves is, provides the LED daylight lamp power supply of a kind of High Power Factor, high conversion efficiency.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of LED power supply circuits, LED power, LED daylight lamp.
In LED power supply circuits described in the utility model, comprise overvoltage crowbar, current rectifying and wave filtering circuit, electromagnetic interference circuit, circuit of power factor correction and filtering circuit;
The input of described overvoltage crowbar is connected with AC power, and output is connected with the input of described current rectifying and wave filtering circuit, for preventing the excessive protection late-class circuit of voltage;
The input of described current rectifying and wave filtering circuit is connected with the output of described overvoltage crowbar, and output is connected with the input of described electromagnetic interference circuit, for electric main is converted into direct current;
The input of described electromagnetic interference circuit is connected with the output of described current rectifying and wave filtering circuit, and output is connected with the input of described circuit of power factor correction, for carrying out filtering to described direct current;
The input of described circuit of power factor correction is connected with the output of described electromagnetic interference circuit, and output is connected with the input of described filtering circuit, for filtered signal step-down, and correcting power factors;
The input of described filtering circuit is connected with the output of described circuit of power factor correction, and output is connected with load, for carrying out filtering to the signal after step-down.
Preferably, described overvoltage crowbar comprises fuse, piezo-resistance; Described fuse and described piezo-resistance are connected in series; Described piezo-resistance and described current rectifying and wave filtering circuit are connected in parallel.
Preferably, described current rectifying and wave filtering circuit comprises rectifier bridge, the second electric capacity C2, the 3rd electric capacity C3 that four rectifier diodes are formed; Described rectifier bridge, described second electric capacity C2, described 3rd electric capacity C3 are connected in parallel.
Preferably, described electromagnetic interference circuit comprises the first inductance L 1, first resistance R1, the first electric capacity C1, the 4th resistance R4.
Preferably, described circuit of power factor correction comprises master control ICU1, electric capacity C5-C9, resistance R3A, R3B, R5-R9, R11, diode D2, D4, metal-oxide-semiconductor Q1, inductance L 2.
Preferably, described filtering circuit comprises the tenth resistance R10, the 11 electric capacity C11 that are connected in parallel.
In LED power described in the utility model, comprise the LED power supply circuits above described in any one.
In LED daylight lamp described in the utility model, comprise LED power mentioned above.
Implement LED power supply circuits of the present utility model, LED power, LED daylight lamp, there is following beneficial effect: by arranging electromagnetic interference circuit, circuit of power factor correction and filtering circuit, there is the feature of High Power Factor, high conversion efficiency, meet the EMC standard of CE, UL etc.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the utility model LED power supply circuits;
Fig. 2 is the circuit theory diagrams of the utility model LED power supply circuits;
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only for explaining the utility model, and be not used in restriction the utility model.
Fig. 1 shows the circuit diagram of the LED power supply circuits according to the utility model embodiment.As shown in Figure 1, these LED power supply circuits, comprise overvoltage crowbar 1, current rectifying and wave filtering circuit 2, electromagnetic interference circuit 3, circuit of power factor correction 4 and filtering circuit 5.
Wherein, the input of overvoltage crowbar 1 is connected with AC power, and output is connected with the input of current rectifying and wave filtering circuit 2, for preventing the excessive protection late-class circuit of voltage; The input of current rectifying and wave filtering circuit 2 is connected with the output of overvoltage crowbar 1, and output is connected with the input of electromagnetic interference circuit 3, for electric main is converted into direct current; The input of electromagnetic interference circuit 3 is connected with the output of current rectifying and wave filtering circuit 2, and output is connected with the input of circuit of power factor correction 4, for carrying out filtering to described direct current; The input of circuit of power factor correction 4 is connected with the output of electromagnetic interference circuit 3, and output is connected with the input of filtering circuit 5, for filtered signal step-down, and correcting power factors; The input of filtering circuit 5 is connected with the output of circuit of power factor correction 4, and output is connected with load, for carrying out filtering to the signal after step-down.
By above-mentioned LED power supply circuits, by arranging electromagnetic interference circuit, circuit of power factor correction and filtering circuit, there is the feature of High Power Factor, high conversion efficiency, meeting the EMC standard of CE, UL etc.Below respectively each electronic circuit is described in detail.
As shown in Figure 2, overvoltage crowbar 1 comprises fuse F1, piezo-resistance MOV1; Fuse F1 and piezo-resistance MOV1 is connected in series; Piezo-resistance MOV1 and current rectifying and wave filtering circuit 2 are connected in parallel.Overvoltage crowbar 1 pair of input voltage overvoltage responds; during normal work, input is normal, and MOV1 does not work; keep high-impedance state; can ignore circuit impact, when electric voltage over press reaches MOV1 startup threshold values extremely, MOV1 becomes low resistance state; resistance is very little; make to flow through very large electric current, and F1 will fuse by during big current, play the object of protection late-class circuit.
Current rectifying and wave filtering circuit 2 comprises rectifier bridge DB1, the second electric capacity C2, the 3rd electric capacity C3 that four rectifier diodes are formed; Rectifier bridge DB1, the second electric capacity C2, the 3rd electric capacity C3 are connected in parallel, for electric main is converted into direct current, and filtering high frequency ripple.Understandable, current rectifying and wave filtering circuit is not limited to employing capacitor filter, LC filter circuit, RC π type or LC π type filter circuit etc. can also be adopted according to actual conditions, the utility model does not limit filter circuit herein, and specific embodiment described herein is only for explaining the utility model.
Electromagnetic interference circuit 3 comprises the first inductance L 1, first resistance R1, the first electric capacity C1, the 4th resistance R4, connects, for carrying out filtering to direct current with the circuit shown in Fig. 2.Wherein, inductance L 1 pair of current waveform shaping, makes power factor be improved; C1 is then used to energy storage, main filtering low-frequency ripple and energy storage.
Circuit of power factor correction 4 comprises master control ICU1, electric capacity C5-C9, resistance R3A, R3B, R5-R9, R11, diode D2, D4, metal-oxide-semiconductor Q1, inductance L 2, connects with the circuit shown in Fig. 2, for filtered signal step-down, and correcting power factors.Wherein, this part to be mainly also used to step-down current limliting, namely by this circuit, the LED bulb of rear class just can reach a process of crossing current, and Q1 is main switch, and D4 is fly-wheel diode, L2 is BUCK inductance, and these three parts form main power model, the three-major-items namely in BUCK.U1 is main control chip, C8, C9 and R4, R5 form the power supply circuits of chip, C8, C9 play again the function of bootstrapping simultaneously, ensure that the driving power of Q1, R3A and R3B is current sample part, and this part can ensure that rear class exports as constant current, and R8, C5 are current sample RC filtering, send into chip after filtering, R6, C6, C7 form the concussion triangular wave of this chip RC.
Filtering circuit 5 comprises the tenth resistance R10, the 11 electric capacity C11 that are connected in parallel, for carrying out filtering to the signal after step-down.
The LED power supply circuits of the utility model embodiment, by arranging electromagnetic interference circuit, circuit of power factor correction and filtering circuit, have the feature of High Power Factor, high conversion efficiency, meet the EMC standard of CE, UL etc.
The utility model also provides a kind of LED power, comprises the LED power supply circuits above described in any one.
The LED power of the utility model embodiment has the following advantages:
1, single-ended placement, the heat of LED power can not be transferred to above LED, is conducive to improving the LED daylight lamp life-span;
2, single-ended placement, is easy to luminous intensity distribution, and lighting angle is large, can realize no dark space luminescence;
3, single-ended placement, is easy to assembling, increases work efficiency;
3, high conversion efficiency, most effectively reaches 92%;
4, High Power Factor (PF), in enormous quantities use can not cause interference to main electrical network;
5, the EMC standard of CE, UL etc. is met.
The utility model also provides a kind of LED daylight lamp, comprises the LED power above described in any one.
Understandable, above embodiment only have expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims; It should be noted that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, independent assortment can be carried out to above-mentioned technical characterstic, can also make some distortion and improvement, these all belong to protection range of the present utility model; Therefore, all equivalents of doing with the utility model right and modification, all should belong to the covering scope of the utility model claim.
Claims (8)
1. LED power supply circuits, is characterized in that, comprise overvoltage crowbar, current rectifying and wave filtering circuit, electromagnetic interference circuit, circuit of power factor correction and filtering circuit;
The input of described overvoltage crowbar is connected with AC power, and output is connected with the input of described current rectifying and wave filtering circuit, for preventing the excessive protection late-class circuit of voltage;
The input of described current rectifying and wave filtering circuit is connected with the output of described overvoltage crowbar, and output is connected with the input of described electromagnetic interference circuit, for electric main is converted into direct current;
The input of described electromagnetic interference circuit is connected with the output of described current rectifying and wave filtering circuit, and output is connected with the input of described circuit of power factor correction, for carrying out filtering to described direct current;
The input of described circuit of power factor correction is connected with the output of described electromagnetic interference circuit, and output is connected with the input of described filtering circuit, for filtered signal step-down, and correcting power factors;
The input of described filtering circuit is connected with the output of described circuit of power factor correction, and output is connected with load, for carrying out filtering to the signal after step-down.
2. LED power supply circuits according to claim 1, is characterized in that, described overvoltage crowbar comprises fuse, piezo-resistance; Described fuse and described piezo-resistance are connected in series; Described piezo-resistance and described current rectifying and wave filtering circuit are connected in parallel.
3. LED power supply circuits according to claim 1, is characterized in that, described current rectifying and wave filtering circuit comprises rectifier bridge, the second electric capacity C2, the 3rd electric capacity C3 that four rectifier diodes are formed; Described rectifier bridge, described second electric capacity C2, described 3rd electric capacity C3 are connected in parallel.
4. LED power supply circuits according to claim 1, is characterized in that, described electromagnetic interference circuit comprises the first inductance L 1, first resistance R1, the first electric capacity C1, the 4th resistance R4.
5. LED power supply circuits according to claim 1, is characterized in that, described circuit of power factor correction comprises master control ICU1, electric capacity C5-C9, resistance R3A, R3B, R5-R9, R11, diode D2, D4, metal-oxide-semiconductor Q1, inductance L 2.
6. LED power supply circuits according to claim 1, is characterized in that, described filtering circuit comprises the tenth resistance R10, the 11 electric capacity C11 that are connected in parallel.
7. a LED power, is characterized in that, comprises the LED power supply circuits according to any one of claim 1-6.
8. a LED daylight lamp, is characterized in that, comprises LED power according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520827450.8U CN205142591U (en) | 2015-10-22 | 2015-10-22 | LED supply circuit , LED power, LED fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520827450.8U CN205142591U (en) | 2015-10-22 | 2015-10-22 | LED supply circuit , LED power, LED fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205142591U true CN205142591U (en) | 2016-04-06 |
Family
ID=55628337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520827450.8U Expired - Fee Related CN205142591U (en) | 2015-10-22 | 2015-10-22 | LED supply circuit , LED power, LED fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205142591U (en) |
-
2015
- 2015-10-22 CN CN201520827450.8U patent/CN205142591U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205648122U (en) | Linear constant current LED drive circuit based on triac dimmer | |
| CN201585174U (en) | Led drive circuit | |
| CN102045928A (en) | LED (light-emitting diode) lamp power supply capable of dimming | |
| CN201830521U (en) | Offline type high-power LED (light-emitting diode) constant-current drive power supply | |
| CN204578876U (en) | A kind of power driving circuit of AC/DC | |
| CN203181299U (en) | Constant-current driving circuit structure for small-power lamps | |
| CN203574891U (en) | Capacitance-resistance voltage-reduction non-isolated type LED driving power supply | |
| CN101841955A (en) | General illumination LED drive circuit | |
| CN203734894U (en) | LED drive circuit | |
| CN103220868A (en) | High-power light emitting diode (LED) switching power supply | |
| CN201813587U (en) | Universal lighting LED driving circuit | |
| CN104507238A (en) | LED (light emitting diode) driving power supply without electrolytic capacitor | |
| CN202931620U (en) | LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp | |
| CN205142591U (en) | LED supply circuit , LED power, LED fluorescent lamp | |
| CN204145795U (en) | Have APFC function without working frequency ripple wave LED streetlamp power source | |
| CN205005320U (en) | Driving circuit of light -emitting diode (LED) fluorescent tube | |
| CN202979375U (en) | LED fluorescent lamp drive circuit and LED tube | |
| CN207589238U (en) | A kind of driving circuit with PFC for LED street lamp | |
| CN204707313U (en) | A kind of LED protection circuit | |
| CN205510461U (en) | From LED drive device that adjusts luminance | |
| CN204994026U (en) | High -power LED lamp driving circuit | |
| CN203618187U (en) | Boosted circuit of constant current boosted power source of LED energy-saving lamp | |
| CN210670674U (en) | LED intelligent lighting energy-saving control system | |
| CN203851312U (en) | LED lamp tube | |
| CN203467004U (en) | Light-adjustable LED drive power supply |
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 |
Granted publication date: 20160406 Termination date: 20181022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |