CN204598404U - A kind of LED dimming power source - Google Patents
A kind of LED dimming power source Download PDFInfo
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- CN204598404U CN204598404U CN201520283231.8U CN201520283231U CN204598404U CN 204598404 U CN204598404 U CN 204598404U CN 201520283231 U CN201520283231 U CN 201520283231U CN 204598404 U CN204598404 U CN 204598404U
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- 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
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Abstract
The utility model relates to a kind of LED dimming power source, comprise LED drive power circuit and tunable optical circuit, described LED drive power circuit comprises rectifier diode D1, D2, D3, the full-wave rectifying circuit D of D4 composition, filter capacitor C1, decoupling capacitor C2, resistance R1, resistance R2, electric capacity C3, control chip IC, switch transformer B, diode D5, some light-emitting diode D8 to Dn, described tunable optical circuit comprises rectifier diode D6, filter capacitor C4, brightness adjustment control triode Q1, slide rheostat R5 and resistance R6, LED dimming power source of the present utility model, other LED dimming power source relatively, there is circuit structure simple, cost is little, energy-efficient advantage.
Description
Technical field
The utility model relates to a kind of LED driving light source, is specifically related to a kind of LED non-pole light regulating constant-current driving power supply.
Background technology
LED illumination device, as the novel illumination light source of present lighting field, than conventional incandescent streetlamp energy-saving more than 80%, has the plurality of advantages such as energy-saving and environmental protection.Due to the particularity of LED illumination device type of drive, general LED illumination device can not modulated light, which limits a lot of ranges of application of LED illumination device.Have in the market and provide dimming LED (Light Emitting Diode) lighting apparatus, but some control modes are too complicated, equipment cost is high, also have control mode simple, but electric energy can not be fully utilized, waste electric energy.
Summary of the invention
For above-mentioned situation, the purpose of this utility model is to provide a kind of LED non-pole light regulating constant-current driving power supply, and circuit structure is simple, cost is little, energy-efficient.
The technical solution of the utility model is as follows: a kind of LED dimming power source, comprise LED drive power circuit and tunable optical circuit, described LED drive power circuit comprises rectifier diode D1, D2, D3, the full-wave rectifying circuit D of D4 composition, filter capacitor C1, decoupling capacitor C2, resistance R1, resistance R2, electric capacity C3, control chip IC, switch transformer B, diode D5, some light-emitting diode D8 to Dn, described tunable optical circuit comprises rectifier diode D6, filter capacitor C4, brightness adjustment control triode Q1, slide rheostat R5 and resistance R6, described filter capacitor C1 is connected to the output of full-wave rectifying circuit D, the input of described full-wave rectifying circuit D connects power supply P, after described decoupling capacitor C2 is connected in series with resistance R1 and filter capacitor C1 connecing, the pin 3 of described control chip IC is connected between resistance R1 and decoupling capacitor C2, pin two is connected with the negative pole of decoupling capacitor C2, pin one is connected with current sampling resistor R3 and resistance R4, current sampling resistor R3 and resistance R4 also connects, described electric current adopts the other end of resistance R3 to be connected with the negative pole of decoupling capacitor C2, the other end of described resistance R4 is connected with the emitter of described control triode Q1, two ends connection control triode Q1 base stage and the emitter respectively of described resistance R6, two ends connection control triode Q1 base stage and the collector electrode respectively of described slide rheostat R5, described rectifier diode D6 one end is connected to the collector electrode controlling triode Q1, the other end is connected to one end of switch transformer B dimmer L3, the other end of dimmer L3 connects the negative pole of filter capacitor C4, described dimmer L3 is connected to the homonymy of primary coil L1, one end of described primary coil L1 connects the positive pole of diode D5 respectively, 5 pin of control chip IC and 6 pin, the other end contact resistance R2 respectively of primary coil L1, the positive pole of electric capacity C3, the other end of resistance R2, the negative pole of electric capacity C3 is connected with the negative pole of diode D5 respectively, the serial connection successively of the secondary coil L2 of switch transformer B exports rectifier diode D7, Light-Emitting Diode D8 to Dn.
Preferably, the input of described power supply P is connected with insurance RD, ensures the safety and stability of circuit.
Preferably, described switch transformer B secondary coil L2 two ends are also connected to filter capacitor C5 and resistance R7, play the effect of filtering, make the electric current of output more stable, ensure light-emitting diode D8 to Dn normal luminous.
Preferably, described control chip IC is chip FM7122MS, better can realize the non-pole light regulating of power supply.
The utility model provides LED non-pole light regulating constant-current driving power supply, by tunable optical circuit, dimmer L3, voltage commutation on dimmer L3 is become direct voltage, this direct current is utilized to regulate the pin one voltage of IC, thus regulate the current value on the pin one external impressed current sampling resistor R3 of IC, so just change the output current value of driving power, obtain the object of light modulation, LED dimming power source of the present utility model, other LED dimming power source, has the advantage that circuit structure is simple, cost is little, energy-efficient relatively.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, a kind of LED dimming power source, comprise LED drive power circuit and tunable optical circuit, described LED drive power circuit comprises rectifier diode D1, D2, D3, the full-wave rectifying circuit D of D4 composition, filter capacitor C1, decoupling capacitor C2, resistance R1, resistance R2, electric capacity C3, control chip IC, switch transformer B, diode D5, some light-emitting diode D8 to Dn, described tunable optical circuit comprises rectifier diode D6, filter capacitor C4, brightness adjustment control triode Q1, slide rheostat R5 and resistance R6, described filter capacitor C1 is connected to the output of full-wave rectifying circuit D, the input of described full-wave rectifying circuit D connects power supply P, the input of power supply P is connected with insurance RD, after described decoupling capacitor C2 is connected in series with resistance R1 and filter capacitor C1 connecing, the pin 3 of described control chip IC is connected between resistance R1 and decoupling capacitor C2, pin two is connected with the negative pole of decoupling capacitor C2, pin one is connected with current sampling resistor R3 and resistance R4, current sampling resistor R3 and resistance R4 also connects, described electric current adopts the other end of resistance R3 to be connected with the negative pole of decoupling capacitor C2, the other end of described resistance R4 is connected with the emitter of described control triode Q1, two ends connection control triode Q1 base stage and the emitter respectively of described resistance R6, two ends connection control triode Q1 base stage and the collector electrode respectively of described slide rheostat R5, described rectifier diode D6 one end is connected to the collector electrode controlling triode Q1, the other end is connected to one end of switch transformer B dimmer L3, the other end of dimmer L3 connects the negative pole of filter capacitor C4, described dimmer L3 is connected to the homonymy of primary coil L1, one end of described primary coil L1 connects the positive pole of diode D5 respectively, the pin 5 of control chip IC and pin 6, the other end contact resistance R2 respectively of primary coil L1, the positive pole of electric capacity C3, the other end of resistance R2, the negative pole of electric capacity C3 is connected with the negative pole of diode D5 respectively, the serial connection successively of the secondary coil L2 of switch transformer B exports rectifier diode D7, Light-Emitting Diode D8 to Dn, described switch transformer B secondary coil L2 two ends are also connected to filter capacitor C5 and resistance R7.
During specific works, power supply P is civil power 220V alternating current input, control chip IC is chip FM7122MS, power supply P is through rectifier diode D1, D2, D3, the full-wave rectifying circuit D rectification of D4 composition, electric capacity C1 forms stable direct voltage, positive step voltage one tunnel of electric capacity C1 supplies pin 3 operating voltage of IC through resistance R1, another road arrives the pin 5 of IC through the primary coil L1 of transformer B, 6, IC starts working, from pin 5, 6 output switch pulse voltages arrive the primary coil L1 of transformer B, the induced voltage produced in the secondary coil L2 of B, through D7 rectification C5 filtering, driving LED light-emitting diode D8 to Dn is luminous.
During this period, the induced voltage produced in the dimmer L3 of transformer B is through D6 rectification C4 filtering, C4 is formed stable direct voltage, this direct voltage removes the 1 pin voltage of control IC through triode Q1, resistance R4, namely controls the current value flowing through resistance R3, the resistance of regulating resistance R5, namely controllable flow crosses the size of current of R3, when the resistance of R5 is adjusted to maximum, the electric current controlling to flow through R3 is minimum, and the electric current that relative IC control transformer B outputs to LED light-emitting diode D8 to Dn is maximum; When the resistance of R5 is adjusted to minimum, the electric current controlling to flow through R3 is maximum, the electric current that relative IC control transformer B outputs to LED light-emitting diode D8 to Dn is minimum, like this by regulating the resistance size of adjustable resistance R5, just driving power can be controlled, output to the size of current of LED light-emitting diode D8 to Dn, realize the object of LED tunable optical.
Claims (4)
1. a LED dimming power source, it is characterized in that comprising LED drive power circuit and tunable optical circuit, described LED drive power circuit comprises rectifier diode D1, D2, D3, the full-wave rectifying circuit D of D4 composition, filter capacitor C1, decoupling capacitor C2, resistance R1, resistance R2, electric capacity C3, control chip IC, switch transformer B, diode D5, some light-emitting diode D8 to Dn, described tunable optical circuit comprises rectifier diode D6, filter capacitor C4, brightness adjustment control triode Q1, slide rheostat R5 and resistance R6, described filter capacitor C1 is connected to the output of full-wave rectifying circuit D, the input of described full-wave rectifying circuit D connects power supply P, after described decoupling capacitor C2 is connected in series with resistance R1 and filter capacitor C1 connecing, the pin 3 of described control chip IC is connected between resistance R1 and decoupling capacitor C2, pin two is connected with the negative pole of decoupling capacitor C2, pin one is connected with current sampling resistor R3 and resistance R4, current sampling resistor R3 and resistance R4 also connects, described electric current adopts the other end of resistance R3 to be connected with the negative pole of decoupling capacitor C2, the other end of described resistance R4 is connected with the emitter of described control triode Q1, two ends connection control triode Q1 base stage and the emitter respectively of described resistance R6, two ends connection control triode Q1 base stage and the collector electrode respectively of described slide rheostat R5, described rectifier diode D6 one end is connected to the collector electrode controlling triode Q1, the other end is connected to one end of switch transformer B dimmer L3, the other end of dimmer L3 connects the negative pole of filter capacitor C4, described dimmer L3 is connected to the homonymy of switch transformer B primary coil L1, one end of described primary coil L1 connects the positive pole of diode D5 respectively, 5 pin of control chip IC and 6 pin, the other end contact resistance R2 respectively of primary coil L1, the positive pole of electric capacity C3, the other end of resistance R2, the negative pole of electric capacity C3 is connected with the negative pole of diode D5 respectively, the secondary coil L2 of switch transformer B is connected in series successively and exports rectifier diode D7, Light-Emitting Diode D8 to Dn.
2. LED dimming power source according to claim 1, is characterized in that the input of described power supply P is connected with insurance RD.
3. LED dimming power source according to claim 1, is characterized in that described switch transformer B secondary coil L2 two ends and is connected to filter capacitor C5 and resistance R7.
4. LED dimming power source according to claim 1, is characterized in that described control chip IC is chip FM7122MS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283231.8U CN204598404U (en) | 2015-05-05 | 2015-05-05 | A kind of LED dimming power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283231.8U CN204598404U (en) | 2015-05-05 | 2015-05-05 | A kind of LED dimming power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204598404U true CN204598404U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520283231.8U Withdrawn - After Issue CN204598404U (en) | 2015-05-05 | 2015-05-05 | A kind of LED dimming power source |
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| Country | Link |
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| CN (1) | CN204598404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780695A (en) * | 2015-05-05 | 2015-07-15 | 卫斌鹏 | LED stepless dimming constant current drive power source |
| CN106793342A (en) * | 2017-02-15 | 2017-05-31 | 江南大学 | A kind of long-life LED drive power based on ripple compensation |
-
2015
- 2015-05-05 CN CN201520283231.8U patent/CN204598404U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780695A (en) * | 2015-05-05 | 2015-07-15 | 卫斌鹏 | LED stepless dimming constant current drive power source |
| CN104780695B (en) * | 2015-05-05 | 2018-03-02 | 厦门亚锝电子科技有限公司 | A kind of LED non-pole light regulatings constant-current driving power supply |
| CN106793342A (en) * | 2017-02-15 | 2017-05-31 | 江南大学 | A kind of long-life LED drive power based on ripple compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20180302 |
|
| AV01 | Patent right actively abandoned |