CN203340374U - Soft-starting LED circuit - Google Patents
Soft-starting LED circuit Download PDFInfo
- Publication number
- CN203340374U CN203340374U CN2013204060483U CN201320406048U CN203340374U CN 203340374 U CN203340374 U CN 203340374U CN 2013204060483 U CN2013204060483 U CN 2013204060483U CN 201320406048 U CN201320406048 U CN 201320406048U CN 203340374 U CN203340374 U CN 203340374U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- led
- input
- soft
- 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
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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a soft-starting LED power supply. The soft-starting LED power supply comprises a rectification filter circuit, an auxiliary power supply, a PFC correction circuit, an AC/DC transformation circuit, a control circuit and a soft start circuit. A commercial power is connected with an input end of the soft-starting LED power supply, and then is connected with input ends of the rectification filter circuit and the auxiliary power supply via the input end of the soft-starting LED power supply; the power is input into an input end of the PFC correction circuit via an output end of the rectification filter circuit, an input end of the control circuit via the input end of the auxiliary power supply, an input end of the AC/DC transformation circuit via an output end of the control circuit and an output end of the PFC correction circuit at the same time, and then connected with the soft start circuit after passing through the AC/DC transformation circuit; and electric energy is output from an output end of the soft-starting LED power supply, and an LED lamp is started. The utility model provides the starting power supply aiming at using with an LED. The LED is started slowly, and a value of a current passing an LED lamp bead is controlled, so damage caused by a peak-value circuit, which is generated because of repeated and quick turning-on and turning-off, on the LED is prevented, the LED lamp bead is protected, and the actual service life of the LED is prolonged.
Description
Technical field
The utility model relates to the lighting energy field, relates in particular to the LED illuminating product.
Background technology
Current LED illuminating product, because its life-span is long, energy consumption is low, become the illuminating product that development potentiality and market are arranged at present most, and product that go out derivative by the LED product even all related to rear-projection, backlight, billboard, display screen etc., and LED is with the fastest developing speed, industry product that Sustainable Exploitation is the strongest at present really as can be seen here.The LED power supply that existing market is sold is still in the development stage, and a lot of technical problems can occur continuously, and constantly be improved.Such as, the LED sold on the market at present starts power supply and just has unsteadiness, even if in LED useful life very long situation itself, due to the LED power initiation, close unstable, the generation peak current impacts, there will be the situation of damaging LED lamp pearl or burning LED lamp pearl, caused shortening the actual life of LED illumination.
Summary of the invention
The utility model has proposed a kind of startup power supply used for LED for above situation, and this startup power supply can provide soft-start mode, prevents that peak current from impacting, and avoids LED lamp pearl is caused damage, and extends the useful life of LED illumination.
The soft start LED power supply that the utility model is related, comprise current rectifying and wave filtering circuit, accessory power supply, the PFC correcting circuit, the AC/DC translation circuit, control circuit, soft starting circuit, wherein civil power is linked into the input of this soft start LED power supply, be linked into respectively the input of current rectifying and wave filtering circuit and accessory power supply from this input, and the output of this current rectifying and wave filtering circuit is input to the input of PFC correcting circuit, the input of this accessory power supply is input to the input of control circuit, the output of the output of control circuit and PFC correcting circuit is input to the input of AC/DC translation circuit simultaneously, by after the AC/DC translation circuit, being directly connected to soft starting circuit, finally by the output of soft start LED power supply, export electric energy and start the LED lamp.This soft start LED power supply can be made modular shape, and improving existing LED power supply increases the soft start function output.
Another road output control terminal of this control circuit is connected to the PFC correcting circuit.
Wherein soft starting circuit comprises resistance R 1, capacitor C 4 and triode Q2, and capacitor C 4 connects the collector terminal of triode Q2, and the base stage of Q2 is connected to the base stage of Q3, and Q3 is connected to power output end.
The utility model proposes the startup power supply used for LED; pass through soft starting circuit; slowly start LED; and control is through the electric current electric weight of LED lamp pearl; avoid owing to repeatedly opening fast or closing; the peak value circuit produced damages LED, and protection LED lamp pearl, extend LED actual life.
[accompanying drawing explanation]
Fig. 1 is the utility model soft start LED power supply architecture block diagram;
Fig. 2 is the utility model soft start LED power circuit principle figure.
Wherein: 100, soft start LED power supply; 10, current rectifying and wave filtering circuit; 20, accessory power supply; 30, PFC correcting circuit; 40, AC/DC varying circuit; 50, control circuit; 60, soft starting circuit.
[embodiment]
Below in conjunction with the utility model the drawings and specific embodiments, the utility model soft start LED power supply is described in further detail.
The soft start LED power supply 100 that the utility model is related, comprise current rectifying and wave filtering circuit 10, accessory power supply 20, PFC correcting circuit 30, AC/DC translation circuit 40, control circuit 50, soft starting circuit 60, wherein civil power is linked into the input of this soft start LED power supply, be linked into respectively the input of current rectifying and wave filtering circuit 10 and accessory power supply 20 from this input, and the output of this current rectifying and wave filtering circuit 10 is input to the input of PFC correcting circuit 30, the input of this accessory power supply 20 is input to the input of control circuit 50, the output of the output of control circuit 50 and PFC correcting circuit 30 is input to the input of AC/DC translation circuit 40 simultaneously, by being directly connected to soft starting circuit 60 after AC/DC translation circuit 40, finally by the output of soft start LED power supply, export electric energy and start the LED lamp.This soft start LED power supply can be made modular shape, and improving existing LED power supply increases the soft start function output.
These control circuit 50 another road output control terminals are connected to PFC correcting circuit 30.
Wherein soft starting circuit 60 comprises resistance R 1, capacitor C 4 and triode Q2, and capacitor C 4 connects the collector terminal of triode Q2, and the base stage of Q2 is connected to the base stage of Q3, and Q3 is connected to power output end.
The operation principle of this soft start LED power supply is as follows: while rigidly connecting energize, capacitor C 4 is equivalent to short circuit, and power supply arrives ground through the be of resistance R 4, triode Q2 knot, capacitor C 3, triode Q2 saturation conduction, the D point is pulled to electronegative potential, and triode Q3 base stage does not have electric current and ends, and the LED lamp is not luminous.Capacitor C 4 is after charging after a while, and both end voltage slowly raises, and triode Q2 base current reduces gradually until end.The current potential that D is ordered will slowly raise, and triode Q3 also can follow conducting gradually, and the LED lamp is just slowly luminous, completes soft start-up process.
The protecting against shock principle of work and power wherein: surge voltage is from two kinds of situations, a kind of situation is while rigidly connecting energize, even the existence of soft starting circuit is arranged, still there is flashy impact in the LED two ends, this phenomenon just can find by the flash of light of observing LED and sending, and at the LED two ends, can effectively absorb this impact after electric capacity C1 and resistance R 1 on also.Another kind of situation is to send a telegram here again after having a power failure suddenly when circuit works at once, or has just been had no progeny in the mains switch pass and opened, and now, because capacitor C 4 both end voltage can not be suddenlyd change, soft starting circuit will lose efficacy at once.Therefore added the circuit is comprised of triode Q1, resistance R 3 and resistance R 5 etc., for capacitor C 4 provides the bleed off path, even instant cut-off like this, triode Q1 also can saturation conduction fall the voltage bleed off on capacitor C 4, and the assurance circuit works.
Wherein constant current function original work principle is: circuit is comprised of triode Q3, impedance Z 1, resistance R 4 and sampling resistor R2 etc.When the electric current of the LED that causes due to outside cause flowing through increases or reduces, voltage drop at sampling resistor R2 two ends also and then raises or reduces, the input terminal voltage of impedance Z 1 also and then changes, thereby controls the base potential of Q3, and the current constant that the LED lamp is flow through in maintenance is constant.
The above, it is only the utility model preferred embodiment, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, refer to any simple modification that above embodiment is done according to the utility model technology, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (3)
1. a soft start LED power supply, it is characterized in that, this soft start LED power supply comprises current rectifying and wave filtering circuit, accessory power supply, the PFC correcting circuit, the AC/DC translation circuit, control circuit, soft starting circuit, wherein civil power is linked into the input of this soft start LED power supply, be linked into respectively the input of current rectifying and wave filtering circuit and accessory power supply from this input, and the output of this current rectifying and wave filtering circuit is input to the input of PFC correcting circuit, the input of this accessory power supply is input to the input of control circuit, the output of the output of control circuit and PFC correcting circuit is input to the input of AC/DC translation circuit simultaneously, by after the AC/DC translation circuit, being directly connected to soft starting circuit, finally by the output of soft start LED power supply, export electric energy and start the LED lamp.
2. soft start LED power supply according to claim 1, is characterized in that, another road output control terminal of this control circuit is connected to the PFC correcting circuit.
3. soft start LED power supply according to claim 1, it is characterized in that, wherein soft starting circuit comprises resistance R 1, capacitor C 4 and triode Q2, and capacitor C 4 connects the collector terminal of triode Q2, and the base stage of Q2 is connected to the base stage of Q3, Q3 is connected to power output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204060483U CN203340374U (en) | 2013-07-09 | 2013-07-09 | Soft-starting LED circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204060483U CN203340374U (en) | 2013-07-09 | 2013-07-09 | Soft-starting LED circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203340374U true CN203340374U (en) | 2013-12-11 |
Family
ID=49709024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204060483U Expired - Fee Related CN203340374U (en) | 2013-07-09 | 2013-07-09 | Soft-starting LED circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203340374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324927A (en) * | 2018-03-28 | 2019-10-11 | 圣邦微电子（北京）股份有限公司 | A kind of production method for the pwm signal driving LED |
-
2013
- 2013-07-09 CN CN2013204060483U patent/CN203340374U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324927A (en) * | 2018-03-28 | 2019-10-11 | 圣邦微电子（北京）股份有限公司 | A kind of production method for the pwm signal driving LED |
| CN110324927B (en) * | 2018-03-28 | 2021-09-24 | 圣邦微电子（北京）股份有限公司 | Method for generating PWM signal for driving LED |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203734532U (en) | Chopper circuit used for LED driver | |
| CN203340374U (en) | Soft-starting LED circuit | |
| CN101977474B (en) | Drive circuit of light emitting diode (LED) constant current illuminating lamp with characteristics of soft start and shock resistance | |
| CN101888732A (en) | Illumination time-delay switch produced by using common button switch | |
| CN202435701U (en) | Automatic controller for electrodeless lamp serving as streetlamp | |
| CN105140997A (en) | Intelligent lamp charger of intelligent traffic system | |
| CN205754941U (en) | A kind of photovoltaic voltage stabilizing LED illumination lamp | |
| CN202142001U (en) | Computer power with overpower prompting function | |
| CN102802322A (en) | Touch delayed lamp switch | |
| CN202679738U (en) | Energy-saving passive electronic time-delay switch | |
| CN204887597U (en) | Preventing arcing circuit of LED fluorescent tube | |
| CN102665336A (en) | Delayed illuminating lamp capable of brightening and dimming gradually | |
| CN205191644U (en) | Ignition mechanism | |
| CN103428978B (en) | Lamp drive circuit and lamp using circuit | |
| CN206498559U (en) | A kind of power starting circuit, power supply and LED | |
| CN205005317U (en) | Ballast driven LED fluorescent tube protection circuit | |
| CN204031552U (en) | There is the great power LED controlling on lamp group circuit of ground protection | |
| CN203827576U (en) | LED street lamp lighted with gradient in luminance | |
| CN204479727U (en) | A kind of electronic product with NFC function | |
| CN205191639U (en) | Ignition device | |
| CN203872420U (en) | Electronic transformer of halogen lamp | |
| CN203387749U (en) | MOS fault protection line | |
| CN204046877U (en) | A kind of LED constant current driving switch power supply | |
| CN202738218U (en) | Touch type delayed lamp switch | |
| CN102905423A (en) | Touch type delay street lamp |
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: 20131211 Termination date: 20140709 |
|
| EXPY | Termination of patent right or utility model |