CN201119051Y - A capacitor voltage reduction LED lighting circuit - Google Patents
A capacitor voltage reduction LED lighting circuit Download PDFInfo
- Publication number
- CN201119051Y CN201119051Y CNU2007200325831U CN200720032583U CN201119051Y CN 201119051 Y CN201119051 Y CN 201119051Y CN U2007200325831 U CNU2007200325831 U CN U2007200325831U CN 200720032583 U CN200720032583 U CN 200720032583U CN 201119051 Y CN201119051 Y CN 201119051Y
- Authority
- CN
- China
- Prior art keywords
- led lighting
- capacitor
- lighting circuit
- voltage reducing
- circuit
- 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
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The utility model relates to a voltage reducing type LED driving circuit of a capacitor, in particular to a lighting circuit. The utility model is technically characterized in that the lighting circuit comprises a voltage reducing capacitor C1, a bridge type rectifier filter and a current equalizing LED lighting device; the input of alternating current passes through the voltage reducing capacitor C1 and a R1 drain resistor connected with the voltage reducing capacitor C1, is rectified via D1-4, and is filtered by a C2 and a C3 which are connected with the voltage reducing capacitor C1, and the output is used for the electric current driven by the LED lighting group connected behind. The utility model provides the voltage reducing type LED lighting circuit of the capacitor, the LED lighting circuit has a simple circuit structure, can drive one to more LED light emitting element(s), has flexible and convenient configuration, and can meet different illumination requirements. The popularization and the application of the LED lighting circuit can bring good economic and the social benefits.
Description
Technical field
The utility model relates to a kind of capacitor step-down led drive circuit, is a kind of lighting circuit.
Background technology
Along with the development of LED manufacturing technology, the life-span of high-brightness LED and price have all reached degree of being practical.According to relevant, the LED lighting is not only energy-conservation, and the long life can be big 50 years, this means that the most people in the real society only need two lamps all one's life.But, LED belongs to the low-voltage driving electric component, single driving voltage only is 1～2VDC, and the lighting circuit operating voltage of our country is 220VAC, traditional method is to adopt the Industrial Frequency Transformer step-down rectifier to come driving LED, also have and adopt electronics AC/DC decompression transformation to drive, this dual mode brings is that weight is big, cost is high, efficient and reliability are low, is difficult to satisfy LED illumination market demand.
The utility model content
The technical problem that solves
For fear of the deficiencies in the prior art part, the utility model proposes a kind of capacitor step-down formula LED lighting circuit, can solve the problem of present existence preferably.
Technical scheme
The capacitor step-down formula LED lighting circuit that the utility model proposes uses capacitor as voltage drop element, is equipped with diode bridge rectifier circuit and filter circuit, finishes the AC/DC decompression transformation, is used for the low-voltage driving of LED.Technical characterictic is: decompression capacitor C1, bridge rectifier filtering and euqalizing current LED illumination; The alternating current input is through decompression capacitor C1, and the R1 bleeder resistance in parallel with it, carries out rectification by D1-4, and carries out filtering by C2 that connects with it and C3 filter circuit, the direct current that the LED illumination group that output is used for connecting thereafter drives.
Described LED illumination group is formed by R2～Rm+1 equalizing resistance and with the L1x～Lmx light-emitting diode of corresponding equalizing resistance polyphone.
Described decompression capacitor C1 adopts high working voltage, non-polar condenser.
Described current rectifying and wave filtering circuit is the diode full-wave rectifier filter circuit.
Beneficial effect
The utility model proposes a kind of capacitor step-down formula LED lighting circuit, circuit constitutes simple, can drive single many LED light-emitting components that only arrive, and flexible configuration is convenient, can satisfy different lighting demands.Promoting the use of of it will bring good economic benefit and social benefit.
Description of drawings
Fig. 1: capacitor step-down formula LED lighting circuit schematic diagram
Embodiment
Now 1 pair of the utility model is further described in conjunction with the accompanying drawings:
F1 among Fig. 1 is a fuse, can fuse to guarantee Electrical Safety when circuit working is unusual; C1 is a decompression capacitor, and its electric parameter is relevant with m, n in the circuit, and its function is mainly used in step-down; R1 is a bleeder resistance, prevents residual charge on the C1 to the electric shock of human body; D1-4 is a bridge rectifier, is to be used for the direct current that LED drives with the exchange conversion after the capacitor C1 step-down; C2, C3 are the dc voltage fluctuation after filter capacitor is used for filtering D1-4 rectification; R2～Rm+1 is an equalizing resistance, is used for the electric current of balanced flow through L1x～Lmx; L1x～Lmx is the LED light-emitting diode.
Behind circuit incoming transport power supply, the capacitive reactance of capacitor C1 is Zc1=1/ (2 π fC1), and the pressure drop on C1 is far longer than the driving voltage sum n*U of n light-emitting diode
LEDThe time, the electric current in its ac circuit will depend primarily on the amount of capacity of C1.Because it is very low that capacitor itself consumes energy, so this circuit compares with other led drive circuit higher efficient arranged, and adds the high-luminous-efficiency of highlighted LED, and applying aspect energy-conserving and environment-protective of this lighting circuit is significant.
Claims (5)
1. a capacitor step-down formula LED lighting circuit is characterized in that: decompression capacitor C1, bridge rectifier filtering and euqalizing current LED illumination; The alternating current input is through decompression capacitor C1, and the R1 bleeder resistance in parallel with it, carries out rectification by D1-4, and carries out filtering by C2 that connects with it and C3 filter circuit, the direct current that the LED illumination group that output is used for connecting thereafter drives.
2. capacitor step-down formula LED lighting circuit according to claim 1 is characterized in that: described LED illumination group is formed by R2～Rm+1 equalizing resistance and with the L1x～Lmx light-emitting diode of corresponding equalizing resistance polyphone.
3. capacitor step-down formula LED lighting circuit according to claim 1 is characterized in that: described decompression capacitor C1 adopts high working voltage, non-polar condenser.
4. capacitor step-down formula LED lighting circuit according to claim 1, it is characterized in that: described current rectifying and wave filtering circuit is the diode full-wave rectifier filter circuit.
5. capacitor step-down formula LED lighting circuit according to claim 1 and 2 is characterized in that: described euqalizing current LED lighting circuit is one and arrives many group LED lighting circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200325831U CN201119051Y (en) | 2007-08-23 | 2007-08-23 | A capacitor voltage reduction LED lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200325831U CN201119051Y (en) | 2007-08-23 | 2007-08-23 | A capacitor voltage reduction LED lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201119051Y true CN201119051Y (en) | 2008-09-17 |
Family
ID=39993654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200325831U Expired - Fee Related CN201119051Y (en) | 2007-08-23 | 2007-08-23 | A capacitor voltage reduction LED lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201119051Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861015A (en) * | 2010-04-30 | 2010-10-13 | 深圳创维－Rgb电子有限公司 | LED light bar protective circuit |
| CN102840469A (en) * | 2011-08-11 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Novel LED (Light-Emitting Diode) energy-saving lamp |
| CN102006051B (en) * | 2009-09-01 | 2015-03-25 | 全汉企业股份有限公司 | Passive current balance actuating device |
| CN104716736A (en) * | 2015-04-04 | 2015-06-17 | 佛山蓝途科技有限公司 | Control circuit of double-power-supply changeover device |
-
2007
- 2007-08-23 CN CNU2007200325831U patent/CN201119051Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006051B (en) * | 2009-09-01 | 2015-03-25 | 全汉企业股份有限公司 | Passive current balance actuating device |
| CN101861015A (en) * | 2010-04-30 | 2010-10-13 | 深圳创维－Rgb电子有限公司 | LED light bar protective circuit |
| CN102840469A (en) * | 2011-08-11 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Novel LED (Light-Emitting Diode) energy-saving lamp |
| CN104716736A (en) * | 2015-04-04 | 2015-06-17 | 佛山蓝途科技有限公司 | Control circuit of double-power-supply changeover device |
| CN104716736B (en) * | 2015-04-04 | 2017-01-18 | 佛山科学技术学院 | Control circuit of double-power-supply changeover device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101998732A (en) | Driving apparatus for light emitting diodes | |
| CN104202862B (en) | Single-stage type LED drive power supply without electrolytic capacitor | |
| CN201119051Y (en) | A capacitor voltage reduction LED lighting circuit | |
| CN202082644U (en) | Highly energy-saving LED illuminator | |
| CN202143243U (en) | AC commercial power LED illuminating lamp drive circuit | |
| CN202455626U (en) | LED (light emitting diode) spotlight driving power supply | |
| CN202435665U (en) | LED constant-current driving circuit with high power factor | |
| CN202773133U (en) | Light-emitting diode driving circuit | |
| CN205883641U (en) | Linear constant current circuit who adjusted luminance in full stroke phase cut angle based on triac dimmer | |
| CN202475284U (en) | Low-power high-power factor power supply | |
| CN201742601U (en) | Stabilized power supply of light-emitting diode lamp | |
| CN202310196U (en) | LED illuminating lamp for sewing machine | |
| CN201450446U (en) | Switch power supply starting circuit | |
| CN101210667A (en) | Power frequency light-emitting diode illuminating lamp | |
| CN201234210Y (en) | Switch power supply for electric pressure cooker | |
| CN204616144U (en) | A kind of control circuit of LED energy conserving lamp | |
| CN202263579U (en) | Line lamp device for diamond synthesis press | |
| CN205082004U (en) | There is not stroboscopic non - isolated form LED drive power supply | |
| CN203590563U (en) | Circuit for raising power factor of AC drive LEDs | |
| CN202514132U (en) | LED dimming power supply | |
| CN204291510U (en) | LED daylight lamp circuit, LED daylight lamp that a kind of electronic ballast for fluoresent lamp drives | |
| CN202873128U (en) | Separated type LED driving power | |
| CN202496117U (en) | LED driver | |
| CN202395670U (en) | High-low frequency AC (alternating current)/DC (direct current) switching circuit | |
| CN106793274A (en) | LED driver without electrolytic capacitors based on electric capacity series parallel structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 |