CN201467515U - High-efficiency low-harmonic wave LED lighting power supply - Google Patents
High-efficiency low-harmonic wave LED lighting power supply Download PDFInfo
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- CN201467515U CN201467515U CN2009200818077U CN200920081807U CN201467515U CN 201467515 U CN201467515 U CN 201467515U CN 2009200818077 U CN2009200818077 U CN 2009200818077U CN 200920081807 U CN200920081807 U CN 200920081807U CN 201467515 U CN201467515 U CN 201467515U
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Abstract
The utility model discloses a high-efficiency low-harmonic wave LED lighting power supply, belonging to the filed of power supply and electronic technology. The high-efficiency low-harmonic wave LED lighting power supply comprises a high-efficiency low-harmonic wave LED lighting power supply which comprises a rectifying filter circuit, one section from one end of a primary winding of a high-frequency transformer to a secondary winding, and a high-frequency rectifying filter circuit which are sequentially connected; the output end of the high-frequency rectifying filter circuit is sequentially connected with a constant-current control circuit and a power factor correction and control circuit, that is, the output end is connected to the other end of the primary winding of the high-frequency transformer, and the other path of the output end of the rectifying filter circuit is connected with the input end of a compensating circuit, and the output end of the compensating circuit is connected with an inner multiplying unit in the power factor correction and control circuit. The high-efficiency low-harmonic wave LED lighting power supply has the advantages of simple structure, low cost, high load, high converting efficiency, high power factor, low harmonic wave current, wide input voltage range, long life, high reliability, low temperature, energy conservation and environment protection and is suitable for various LED lamps.
Description
Affiliated technical field
The utility model relates to a kind of stabilized voltage power supply, and especially LED electric consumption on lighting source belongs to power supply and electronic technology field.
Background technology
At present, LED (light emitting diode) electricity-saving lamp technology reach its maturity, perfect.Compare with the general lighting lamp, the LED electricity-saving lamp has that environmental protection, photoelectric efficiency height, life-span are long, advantage such as application is wide.Therefore require the LED driving power supporting with it accordingly, also must possess environmental protection, energy-conservation, characteristics such as the life-span is long.At present the Universal LED driving power have that conversion efficiency is low, type of drive is unreasonable (capacitance-resistance constant voltage driving), to the serious shortcomings such as (harmonic current are too high) of electric network pollution.
The utility model content
In order to overcome the above-mentioned deficiency of existing LED driving power, the utility model provides a kind of LED electric consumption on lighting source with compensating circuit and constant-current driving.
The technical scheme that its technical problem that solves the utility model adopts is: high-efficiency and low-harmonic LED electric consumption on lighting source comprises successively an end of the current rectifying and wave filtering circuit that connects, the elementary winding of high frequency transformer, to secondary winding, rectifier filter circuit; The output of rectifier filter circuit connects constant-current control circuit, power factor correction and control circuit successively, the other end to the elementary winding of high frequency transformer, another road of the output of current rectifying and wave filtering circuit connects the input of compensating circuit, the internal multiplier in its output termination power factor correction and the control circuit.
The beneficial effects of the utility model are, and are simple in structure, cost is low, load is high, conversion efficiency height, power factor height, low, the wide input voltage range of harmonic current, and the life-span is long, reliability is high, low, the energy-conserving and environment-protective of temperature.
Description of drawings
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is a compensating circuit schematic diagram in the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
High-efficiency and low-harmonic LED electric consumption on lighting source comprises successively an end of the current rectifying and wave filtering circuit 1 that connects, high frequency transformer 2 elementary windings, to secondary winding, rectifier filter circuit 3; The output of rectifier filter circuit 3 connects constant-current control circuit 4, power factor correction and control circuit 5 successively, the other end to high frequency transformer 2 elementary windings, another road of the output of current rectifying and wave filtering circuit 1 connects the input D of compensating circuit 6, and its output E meets the internal multiplier M in power factor correction and the control circuit 5.
As Fig. 1, the alternating current 220V input connects current rectifying and wave filtering circuit 1, divide two-way through the voltage behind the rectifying and wave-filtering, one the road to high frequency transformer 2, one the road to compensating circuit 6, compensating circuit 6 connects power factor correction and control circuit 5, make its more accurate work, high frequency transformer 2 is subjected to the control of power factor correction and control circuit 5, and high frequency transformer 3 connects rectifier filter circuit 3, and its output termination constant-current control circuit 4 is to power factor correction and control circuit 5, arrive the other end of the elementary winding of high frequency transformer 2 again, through after the rectifier filter circuit 3, be direct current constant current voltage, connect LED lamp group 7.
The draw bail of compensating circuit 6 is that its input D one road connecting resistance R1, resistance R 2, resistance R 3 are output E to ground between resistance R 2 and the resistance R 3, and connect capacitor C 1 to ground; One road connecting resistance R5, resistance R 6 connects the negative pole of voltage-stabiliser tube D1 to ground between resistance R 5 and the resistance R 6, its positive pole connects capacitor C 2 to ground, and connects the base stage of triode Q1, and its collector electrode connecting resistance R4 is to output E, its grounded emitter.
As Fig. 2, the input D of compensating circuit 6 connects the output of current rectifying and wave filtering circuit 1, the output E power factor correction of compensating circuit 6 and the internal multiplier M in the control circuit 5, the resistance of adjustment resistance R 1, R2, R3, making the A point voltage is about 2V when input voltage is low, when input voltage rises, A point, B point voltage rise on also following, and this moment, D1 punctured, and the C point voltage rises, triode Q1 conducting descends the A point voltage and still maintains about 2V.The A point connects output E, connect the internal multiplier M in power factor correction and the control circuit 5 again, by this circuit compensation, input voltage is to the control of internal multiplier M input, thereby the assurance power supply keeps the High Power Factor low harmonic current in than wide range input voltage.
In the utility model, power factor correction, DC-DC, constant current control realize with single-level circuit that all power supply can obtain the low harmonic wave of High Power Factor in the scope of 85-265V, loss can be dropped to minimum, to satisfy the high efficiency of power supply.
Claims (2)
1. high-efficiency and low-harmonic LED electric consumption on lighting source comprises an end of the current rectifying and wave filtering circuit (1) that connects successively, the elementary winding of high frequency transformer (2), to secondary winding, rectifier filter circuit (3); The output of rectifier filter circuit (3) connects constant-current control circuit (4), power factor correction and control circuit (5) successively, the other end to the elementary winding of high frequency transformer (2), it is characterized in that, another road of the output of current rectifying and wave filtering circuit (1) connects the input (D) of compensating circuit (6), and its output (E) connects the internal multiplier (M) in power factor correction and the control circuit (5).
2. high-efficiency and low-harmonic LED electric consumption on lighting according to claim 1 source, it is characterized in that, the draw bail of described compensating circuit (6) is, its input (D) one road connecting resistance (R1), resistance (R2), resistance (R3) are to ground, between resistance (R2) and the resistance (R3) is output (E), and connects electric capacity (C1) to ground; One road connecting resistance (R5), resistance (R6) are to ground, connect the negative pole of voltage-stabiliser tube (D1) between resistance (R5) and the resistance (R6), its positive pole connects electric capacity (C2) to ground, and connects the base stage of triode (Q1), its collector electrode connecting resistance (R4) is to output (E), its grounded emitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200818077U CN201467515U (en) | 2009-06-17 | 2009-06-17 | High-efficiency low-harmonic wave LED lighting power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200818077U CN201467515U (en) | 2009-06-17 | 2009-06-17 | High-efficiency low-harmonic wave LED lighting power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201467515U true CN201467515U (en) | 2010-05-12 |
Family
ID=42394859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200818077U Expired - Fee Related CN201467515U (en) | 2009-06-17 | 2009-06-17 | High-efficiency low-harmonic wave LED lighting power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201467515U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925216A (en) * | 2010-07-23 | 2010-12-22 | 中山市威禾电器制造有限公司 | LED street lamp |
| CN102510214A (en) * | 2011-11-09 | 2012-06-20 | 北京通力盛达节能设备股份有限公司 | Power protection circuit |
| CN109510480A (en) * | 2018-12-27 | 2019-03-22 | 李清明 | Low-voltage lighting system |
-
2009
- 2009-06-17 CN CN2009200818077U patent/CN201467515U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925216A (en) * | 2010-07-23 | 2010-12-22 | 中山市威禾电器制造有限公司 | LED street lamp |
| CN101925216B (en) * | 2010-07-23 | 2013-02-13 | 中山市威禾电器制造有限公司 | LED street lamp |
| CN102510214A (en) * | 2011-11-09 | 2012-06-20 | 北京通力盛达节能设备股份有限公司 | Power protection circuit |
| CN109510480A (en) * | 2018-12-27 | 2019-03-22 | 李清明 | Low-voltage lighting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Chengdu Aiyidi Electronics Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20160617 |