CN202713716U - One-to-two type intelligent load determining dimmable circuit having external LED lamp power supply - Google Patents
One-to-two type intelligent load determining dimmable circuit having external LED lamp power supply Download PDFInfo
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- CN202713716U CN202713716U CN2012203046198U CN201220304619U CN202713716U CN 202713716 U CN202713716 U CN 202713716U CN 2012203046198 U CN2012203046198 U CN 2012203046198U CN 201220304619 U CN201220304619 U CN 201220304619U CN 202713716 U CN202713716 U CN 202713716U
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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 provides a one-to-two type intelligent load determining dimmable circuit having an external LED lamp power supply. The one-to-two type intelligent load determining dimmable circuit comprises: a power supply for providing a constant-current switching power supply for LED lamps; and an intelligent load determining circuit which is connected at the output end of the power supply for determining the number of the LED lamp loads so as to make the power supply output different currents. According to the utility model, by adding the intelligent load determining circuit, the manufacturing cost can be reduced, two LED lamp loads are driven by one power supply, the efficiency is not reduced, the application range of the power supply is expanded, the wiring and installation cost can be reduced, and the power loss is reduced.
Description
Technical field
The utility model relates to a kind of one drag two drive circuit of external LED lamp power, relates in particular to a kind of external LED lamp power one drag two intelligent decision load tunable optical circuit.
Background technology
From existing market, LED fluorescent lamp tubular type structure will be developed.From lighting of home, suitable illumination intensity still needs the above energy-saving lamp product of 10W, and compact fluorescent lamp is mostly at 7～15W, and fluorescent lamp is at 20～40W.If concentrate the power that designs more than the 10W with LED, heat radiation can bring very large puzzlement, and it also is the key factor that affects cost.Obviously, fluorescent lamp tubular type structure more meets LED heat radiation requirement, also meets existing lamp interface mode.
The LED power supply adopts single-stage PFC(Power Factor Correction, circuit of power factor correction usually) the composition constant-current switch power source.The LED power supply of one drag two adopts the Switching Power Supply of constant voltage usually, connects the LED lamp load that is in series with constant flow module again.Wherein, the voltage constant of power supply output.The LED light fixture partly is comprised of current regulator diode, LED lamp pearl and resistance.The power-efficient of this scheme is lower, and the main loss of electric energy is on current regulator diode and resistance; In addition, also have the high defective of cost, need extra current regulator diode, the resistance etc. of increasing, the area of aluminium base also needs to increase.Another scheme is selected voltage-stabilizing switch power source exactly, connect again the fluorescent tube that the persevering adfluxion of string becomes circuit, but this scheme high and inefficiency that also is cost, the constant current integrated circuit because the lamp pearl of every string will be connected, constant current integrated circuit are wanted loss part power.
Summary of the invention
The purpose of this utility model is to provide a kind of external LED lamp power one drag two intelligent decision load tunable optical circuit, and the cost that existing one drag two LED power supply exists is high to solve, the problem of Efficiency Decreasing.
To achieve these goals, the utility model provides a kind of external LED lamp power one drag two intelligent decision load tunable optical circuit, and it comprises: power supply is used to the LED light fixture that constant-current switch power source is provided; The intelligent decision load circuit is connected in the output of described power supply, thereby is used for judging that the quantity of LED lamp load makes the different electric current of described power supply output.
According to a kind of preferred implementation of above-mentioned external LED lamp power one drag two intelligent decision load tunable optical circuit, wherein, described power supply is single-end flyback switching power supply.
A kind of preferred implementation according to above-mentioned external LED lamp power one drag two intelligent decision load tunable optical circuit, wherein, described intelligent decision load circuit comprises: binary channels load signal testing circuit is used for judging the LED lamp load of varying number, and exports corresponding control signal; The dual input ANDgate and is connected binary channels load signal testing circuit and is connected, and is used for receiving described control signal and exporting different electric currents to the LED light fixture.
The utility model can reduce manufacturing cost by setting up the intelligent decision load circuit, and a power supply drives 2 LED lamp loads, and efficient does not reduce, and can improve the scope of application of power supply, and the cost that reduces wiring and install reduces the loss of power.
Description of drawings
Fig. 1 is the theory structure block diagram of the utility model preferred embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
Fig. 1 schematically shows the theory structure of the utility model preferred embodiment, and as shown in the figure, this preferred embodiment comprises as the single-end flyback switching power supply 3 of power supply and intelligent decision load circuit 2.During application, intelligent decision load circuit 2 is connected with the LED lamp load.Wherein single-end flyback switching power supply 3 is used to LED lamp load 1 that constant-current switch power source is provided.Intelligent decision load circuit 2 is connected in the output of single-end flyback switching power supply 3, thereby is used for judging that the quantity of LED lamp load makes the different electric current of single-end flyback switching power supply 3 outputs to LED lamp load 1.
Further, intelligent decision load circuit 2 comprises dual input ANDgate 21 and binary channels load signal testing circuit 22.Wherein binary channels load signal testing circuit 22 is used for judging the LED lamp load of varying number, and exports corresponding control signal.Dual input ANDgate 21 is connected connection with binary channels load signal testing circuit, be used for reception control signal and export different electric currents to LED lamp load 1.
During implementation, the power conversion portion mainly comprises single-end flyback switching power supply 3, and its output current size mainly determines (voltage more High Output Current is larger) by the voltage swing of 5 pin of a dual operational amplifier TSM103 under the condition of sampled signal inconvenience.Therefore can adopt the 5 pin voltage swings of control dual operational amplifier TSM103 to carry out the load current adjusting.
Binary channels load signal testing circuit 22 comprises a dual operational amplifier LM2904, when bringing onto load not, 2 pin of dual operational amplifier LM2904 and 6 pin all do not have the voltage signal input, 1 pin, 7 pin are all exported the high level (output of corresponding 1 pin of the input of 2 pin, the corresponding 7 pin outputs of the input of 6 pin), on the contrary output low level.
The input of dual input ANDgate 21 is grids of two field effect transistor, when high level appears in any one field effect transistor input, the 5 pin resistance to earth that the output conducting just is equivalent to dual operational amplifier TSM103 reduce lower voltage, and power output reduces.When otherwise two inputs all were low level, the 5 pin resistance to earth that the output cut-off just is equivalent to dual operational amplifier TSM103 rose, and power output increases.
In sum, the utlity model has following advantage:
1, reduced cost, a power supply drives 2 LED lamp loads, and efficient does not reduce.
2, have intelligent decision load number function, improved the scope of application of power supply, can export corresponding electric current according to load number, namely can be used in the occasion of a load, also can be used in the occasion of 2 loads.
3, the cost that has reduced wiring and installed reduces the power supply cost, avoids the one-to-one light fixture to join a power supply by each lamp.
4, the one drag two scheme power-efficient of constant current is higher again than adopting constant voltage for the circuit that has an intelligent judgment function, has reduced the loss of power supply, improves the light efficiency of LED light fixture.
5, have wide range of applications, can be used on the various LED light fixtures, such as the LED fluorescent tube, LED lamp bar, LED Panel light, LED ceiling light, LED Down lamp etc.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (3)
1. an external LED lamp power one drag two intelligent decision load tunable optical circuit is characterized in that, comprising:
Power supply is used to the LED light fixture that constant-current switch power source is provided;
The intelligent decision load circuit is connected in the output of described power supply, thereby is used for judging that the quantity of LED lamp load makes the different electric current of described power supply output.
2. external LED lamp power one drag two intelligent decision load tunable optical circuit according to claim 1 is characterized in that, described power supply is single-end flyback switching power supply.
3. external LED lamp power one drag two intelligent decision load tunable optical circuit according to claim 1 is characterized in that, described intelligent decision load circuit comprises:
Binary channels load signal testing circuit is used for judging the LED lamp load of varying number, and exports corresponding control signal;
The dual input ANDgate and is connected binary channels load signal testing circuit and is connected, and is used for receiving described control signal and exporting different electric currents to the LED light fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203046198U CN202713716U (en) | 2012-06-27 | 2012-06-27 | One-to-two type intelligent load determining dimmable circuit having external LED lamp power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203046198U CN202713716U (en) | 2012-06-27 | 2012-06-27 | One-to-two type intelligent load determining dimmable circuit having external LED lamp power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202713716U true CN202713716U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203046198U Expired - Lifetime CN202713716U (en) | 2012-06-27 | 2012-06-27 | One-to-two type intelligent load determining dimmable circuit having external LED lamp power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN202713716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014154020A1 (en) * | 2013-03-28 | 2014-10-02 | 东林科技股份有限公司 | Multi-specification light emitting diode chip driving method and driving device |
| CN104113962A (en) * | 2014-05-04 | 2014-10-22 | 麦克奥迪实业集团有限公司 | Different LED illumination modules judged according to voltage |
-
2012
- 2012-06-27 CN CN2012203046198U patent/CN202713716U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014154020A1 (en) * | 2013-03-28 | 2014-10-02 | 东林科技股份有限公司 | Multi-specification light emitting diode chip driving method and driving device |
| CN104113962A (en) * | 2014-05-04 | 2014-10-22 | 麦克奥迪实业集团有限公司 | Different LED illumination modules judged according to voltage |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |