CN204104199U - A kind of LED drive power - Google Patents
A kind of LED drive power Download PDFInfo
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- CN204104199U CN204104199U CN201420615816.0U CN201420615816U CN204104199U CN 204104199 U CN204104199 U CN 204104199U CN 201420615816 U CN201420615816 U CN 201420615816U CN 204104199 U CN204104199 U CN 204104199U
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Abstract
The utility model discloses a kind of LED drive power, comprise EMC circuit, constant current change-over circuit, output current regulating circuit, output filter circuit four part.When after input input 220V alternating current, through the process of EMC circuit, then change through the constant current of constant current change-over circuit, the size of its output current regulates and controls through output current regulating circuit afterwards, finally by the filtering of output filter circuit, LED light source is powered, make its work.The LED driving power that the utility model provides, its adjustment output current size is simple, convenient, and adjustment threshold range is wide, practical, applied range.
Description
Technical field
The utility model relates to illumination application, particularly relates to a kind of LED drive power.
Background technology
At present along with LED illumination product progressively replaces traditional lighting, the superiority of LED illumination product day by day embody and accept by user, correspondingly, the demand of LED drive power also increases day by day.But a lot of LED drive power finding that when applying it drives the power bracket of load very little at present, even occurring that the unique corresponding load of driving power needs just can meet the problem of instructions for use, using very inconvenient.After the driving power of an employing supplier, when needing to change supplier, just there will be compatible not strong situation, in the maintenance of subsequent product, add workload, in the management and control of product, too increase very large complexity and difficulties simultaneously.
Summary of the invention
In order to solve the shortcoming and defect existed in above-mentioned prior art, basis is practical provides a kind of compatibility by force, applies LED drive power easily.
For achieving the above object, the utility model provides following technical scheme:
A kind of LED drive power, comprises EMC circuit (1), constant current change-over circuit (2), output current regulating circuit (3) and output filter circuit (4); Described EMC circuit (1), constant current change-over circuit (2), output filter circuit (4) connect successively, and are provided with alternating current input in described EMC circuit (1), are provided with continuous current output in output filter circuit (4); Described output current regulating circuit (3) connects described constant current change-over circuit (2), regulates output current.
Further, described EMC circuit (1) comprises alternating current input, fuse F1, piezo-resistance RZ1, resistance R11, R12, R14, R16, electric capacity CX1 ~ CX3, inductance L 1 ~ L3; One end of described fuse F1 connects the L end of alternating current, and the other end connects piezo-resistance RZ1, resistance R14, one end of electric capacity CX1 and 1 pin of inductance L 3; The other end of described piezo-resistance RZ1, electric capacity CX1 and 2 pin of inductance L 3 connect the N end of alternating current, the other end of one end contact resistance R14 of described resistance R16, and the other end connects the N end of alternating current; 3 pin of described inductance L 3 connect one end of electric capacity CX2, CX3 and inductance L 1, resistance R11; 4 pin of described inductance L 3 connect the other end of electric capacity CX2, and resistance R12, inductance L 2 one end, the other end of described resistance R12, inductance L 2 connects the other end of electric capacity CX3, and is connected to an input N1 of constant current change-over circuit (2); The other end of described inductance L 1, resistance R11 is connected to another input L1 of constant current change-over circuit (2).
Further, described constant current change-over circuit (2) comprises bridge rectifier BR1, thermistor R19, triode Q1, integrated circuit (IC), transformer T1, metal-oxide-semiconductor Q2, piezo-resistance RZ2, diode D1 ~ D4, D6, resistance R1, R2, R33, R3, R5, R6, R7, R9, R29, R23, R13, R17, R18, R20, electric capacity C1, C21, C2, CY1, CY2, C3 ~ C5, C25, C26, C6, C17; 2 pin of described bridge rectifier BR connect input L1,3 pin connect another input N1,4 pin ground connection, 1 pin connects thermistor R19, piezo-resistance RZ2, resistance R33, R3, electric capacity C1, C21, C2, CY2, one end of voltage stabilizing didoe D4 and 6 pin of transformer T1; The other end ground connection of described piezo-resistance RZ2, electric capacity C1, C21; One end of the other end contact resistance R20 of described voltage stabilizing didoe D4, electric capacity C2, resistance R33, R3; The other end ground connection of described electric capacity CY2; The other end of one end contact resistance R20 of described diode D3,4 pin of other end connection transformer T1 and the drain electrode of metal-oxide-semiconductor Q2; One end of described diode D1 connects the other end of thermistor R19 and one end of resistance R17, one end of other end contact resistance R23, R1 and electric capacity C4; One end of the other end contact resistance R13 of described resistance R23, the collector electrode of the other end connecting triode Q1 of resistance R13; The base stage of other end connecting triode Q1 of the other end contact resistance R2 of described resistance R1, resistance R2 and 5 pin of integrated circuit (IC); The other end ground connection of described electric capacity C4; The emitter of described triode Q1 connects one end of electric capacity C25, C26, C5 and resistance R7 and 7 pin of integrated circuit (IC); The other end ground connection of described electric capacity C25, C26, C5; The other end of described resistance R7 connects one end of diode D2, the other end contact resistance R5 of this diode D2, one end of electric capacity C17 and 1 pin of transformer T1; 3 pin of other end connection transformer T1 of described electric capacity C17 and one end of electric capacity CY1 ground connection; The other end contact resistance R6 of described resistance R5, one end of electric capacity C6 and 6 pin of integrated circuit (IC); The other end of resistance R6, electric capacity C6 connects one end of electric capacity C3 and ground connection; The other end of electric capacity C3 connects 4 pin of integrated circuit (IC); Ground connection after 2 pin of integrated circuit (IC) are connected with 3 pin, one end of 1 pin contact resistance R29; The other end contact resistance R9 of resistance R29, one end of diode D6; The other end of resistance R9, diode D6 connects the grid of metal-oxide-semiconductor Q2; One end of the other end contact resistance R18 of described resistance R17, the other end of resistance R18 connects 8 pin of integrated circuit (IC), and connects an input CS of described output current regulating circuit (3); The source electrode of described metal-oxide-semiconductor Q2 connects another input S of output current regulating circuit (3); 8 pin of described transformer T1 connect an input L2 of described output filter circuit (4), 10 pin of the other end connection transformer T1 of described electric capacity CY1 ground connection, and connect another input N2 of output filter circuit (4).
Further, described output current regulating circuit (3) comprises resistance R8, variable resistor R4; The two ends of described resistance R8 connect input CS, S respectively; One end of described variable resistor R4 connects input S, and the other end is adjustable position, and is connected to the ground.
Further, described output filter circuit (4) comprises diode D8, resistance R10, R15, electric capacity C8 ~ C16, inductance L 4; One end of one end contact resistance R15 of described diode D8 also connects input L2; The other end of resistance R15 connects one end of electric capacity C14; The other end of electric capacity C14 connects the other end and electric capacity C8 ~ C13, one end of C15 and 4 pin of inductance L 4 of diode D8; The other end of electric capacity C8 ~ C13, C15 connects input N2, and connects 1 pin of inductance L 4; 3 pin of inductance L 4 connect one end of electric capacity C16, resistance R10, and connect the output LED+ of output filter circuit (4), and 2 pin of inductance L 4 connect the other end of electric capacity C16, resistance R10, and connect the output LED-of output filter circuit (4).
LED drive power of the present utility model, achieves the regulatory function to driving power output current by output current regulating circuit, extends the power bracket that it drives load greatly.Its principle is simple, compatible strong, drives scope wide, application and easy to operate.
Use LED drive power of the present utility model, the problem that the driving power that can effectively avoid different suppliers to provide is incompatible, decrease the cost allowance changing supplier, alleviate the workload of subsequent product maintenance aspect simultaneously greatly, reduce the management of product and the complexity and difficulties of control aspect.
Accompanying drawing explanation
Fig. 1 is the structural schematic block diagram of the embodiment of a kind of LED drive power of the utility model;
Fig. 2 is the circuit diagram of EMC circuit in Fig. 1;
Fig. 3 is the circuit diagram of constant current change-over circuit in Fig. 1;
Fig. 4 is the circuit diagram of output current regulating circuit in Fig. 1;
Fig. 5 is the circuit diagram of output filter circuit in Fig. 1;
Description of reference numerals: 1-EMC circuit, 2-constant current change-over circuit, 3-output current regulating circuit, 4-output filter circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, LED drive power in the present embodiment, comprise the EMC circuit, constant current change-over circuit, the output filter circuit that connect successively, and EMC circuit is provided with alternating current input, for connecting 220VAC civil power, output filter circuit is provided with continuous current output, for connecting driven LED; Output current regulating circuit connects constant current change-over circuit, is regulated power output by variable resistor.
As preferably, as shown in Figure 2, in the present embodiment, described EMC circuit comprises alternating current input, fuse F1, piezo-resistance RZ1, resistance R11, R12, R14, R16, electric capacity CX1 ~ CX3, inductance L 1 ~ L3; One end of described fuse F1 connects the L end of alternating current, and the other end connects piezo-resistance RZ1, resistance R14, one end of electric capacity CX1 and 1 pin of inductance L 3; The other end of described piezo-resistance RZ1, electric capacity CX1 and 2 pin of inductance L 3 connect the N end of alternating current, the other end of one end contact resistance R14 of described resistance R16, and the other end connects the N end of alternating current; 3 pin of described inductance L 3 connect one end of electric capacity CX2, CX3 and inductance L 1, resistance R11; 4 pin of described inductance L 3 connect the other end of electric capacity CX2, and resistance R12, inductance L 2 one end, the other end of described resistance R12, inductance L 2 connects the other end of electric capacity CX3, and is connected to an input N1 of constant current change-over circuit; The other end of described inductance L 1, resistance R11 is connected to another input L1 of constant current change-over circuit.
As preferably, as shown in Figure 3, in the present embodiment, described constant current change-over circuit comprises bridge rectifier BR1, thermistor R19, triode Q1, integrated circuit (IC), transformer T1, metal-oxide-semiconductor Q2, piezo-resistance RZ2, diode D1 ~ D4, D6, resistance R1, R2, R33, R3, R5, R6, R7, R9, R29, R23, R13, R17, R18, R20, electric capacity C1, C21, C2, CY1, CY2, C3 ~ C5, C25, C26, C6, C17; 2 pin of described bridge rectifier BR connect input L1,3 pin connect another input N1,4 pin ground connection, 1 pin connects thermistor R19, piezo-resistance RZ2, resistance R33, R3, electric capacity C1, C21, C2, CY2, one end of voltage stabilizing didoe D4 and 6 pin of transformer T1; The other end ground connection of described piezo-resistance RZ2, electric capacity C1, C21; One end of the other end contact resistance R20 of described voltage stabilizing didoe D4, electric capacity C2, resistance R33, R3; The other end ground connection of described electric capacity CY2; The other end of one end contact resistance R20 of described diode D3,4 pin of other end connection transformer T1 and the drain electrode of metal-oxide-semiconductor Q2; One end of described diode D1 connects the other end of thermistor R19 and one end of resistance R17, one end of other end contact resistance R23, R1 and electric capacity C4; One end of the other end contact resistance R13 of described resistance R23, the collector electrode of the other end connecting triode Q1 of resistance R13; The base stage of other end connecting triode Q1 of the other end contact resistance R2 of described resistance R1, resistance R2 and 5 pin of integrated circuit (IC); The other end ground connection of described electric capacity C4; The emitter of described triode Q1 connects one end of electric capacity C25, C26, C5 and resistance R7 and 7 pin of integrated circuit (IC); The other end ground connection of described electric capacity C25, C26, C5; The other end of described resistance R7 connects one end of diode D2, the other end contact resistance R5 of this diode D2, one end of electric capacity C17 and 1 pin of transformer T1; 3 pin of other end connection transformer T1 of described electric capacity C17 and one end of electric capacity CY1 ground connection; The other end contact resistance R6 of described resistance R5, one end of electric capacity C6 and 6 pin of integrated circuit (IC); The other end of resistance R6, electric capacity C6 connects one end of electric capacity C3 and ground connection; The other end of electric capacity C3 connects 4 pin of integrated circuit (IC); Ground connection after 2 pin of integrated circuit (IC) are connected with 3 pin, one end of 1 pin contact resistance R29; The other end contact resistance R9 of resistance R29, one end of diode D6; The other end of resistance R9, diode D6 connects the grid of metal-oxide-semiconductor Q2; One end of the other end contact resistance R18 of described resistance R17, the other end of resistance R18 connects 8 pin of integrated circuit (IC), and connects an input CS of described output current regulating circuit; The source electrode of described metal-oxide-semiconductor Q2 connects another input S of output current regulating circuit; 8 pin of described transformer T1 connect an input L2 of described output filter circuit, 10 pin of the other end connection transformer T1 of described electric capacity CY1 ground connection, and connect another input N2 of output filter circuit.
As preferably, as shown in Figure 4, in the present embodiment, described output current regulating circuit comprises resistance R8, variable resistor R4; The two ends of described resistance R8 connect input CS, S respectively; The A end of described variable resistor R4 connects input S, and B end is adjustable position, and is connected to the ground.
As preferably, as shown in Figure 5, in the present embodiment, described output filter circuit comprises diode D8, resistance R10, R15, electric capacity C8 ~ C16, inductance L 4; One end of one end contact resistance R15 of described diode D8 also connects input L2; The other end of resistance R15 connects one end of electric capacity C14; The other end of electric capacity C14 connects the other end and electric capacity C8 ~ C13, one end of C15 and 4 pin of inductance L 4 of diode D8; The other end of electric capacity C8 ~ C13, C15 connects input N2, and connects 1 pin of inductance L 4; 3 pin of inductance L 4 connect one end of electric capacity C16, resistance R10, and connect the output LED+ of output filter circuit, and 2 pin of inductance L 4 connect the other end of electric capacity C16, resistance R10, and connect the output LED-of output filter circuit.
LED drive power in the present embodiment, by the adjustable resistance in output current regulating circuit, achieve the regulatory function to driving power output current, thus extend the power bracket that this LED drive circuit drives load greatly, its principle is simple, compatible strong, drive scope wide, application and easy to operate.
In a word; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a LED drive power, is characterized in that: comprise EMC circuit (1), constant current change-over circuit (2), output current regulating circuit (3) and output filter circuit (4); Described EMC circuit (1), constant current change-over circuit (2), output filter circuit (4) connect successively, and are provided with alternating current input in described EMC circuit (1), are provided with continuous current output in output filter circuit (4); Described output current regulating circuit (3) connects described constant current change-over circuit (2), regulates output current.
2. LED drive power as claimed in claim 1, is characterized in that: described EMC circuit (1) comprises alternating current input, fuse F1, piezo-resistance RZ1, resistance R11, R12, R14, R16, electric capacity CX1 ~ CX3, inductance L 1 ~ L3; One end of described fuse F1 connects the L end of alternating current, and the other end connects piezo-resistance RZ1, resistance R14, one end of electric capacity CX1 and 1 pin of inductance L 3; The other end of described piezo-resistance RZ1, electric capacity CX1 and 2 pin of inductance L 3 connect the N end of alternating current, the other end of one end contact resistance R14 of described resistance R16, and the other end connects the N end of alternating current; 3 pin of described inductance L 3 connect one end of electric capacity CX2, CX3 and inductance L 1, resistance R11; 4 pin of described inductance L 3 connect the other end of electric capacity CX2, and resistance R12, inductance L 2 one end, the other end of described resistance R12, inductance L 2 connects the other end of electric capacity CX3, and is connected to an input N1 of constant current change-over circuit (2); The other end of described inductance L 1, resistance R11 is connected to another input L1 of constant current change-over circuit (2).
3. LED drive power as claimed in claim 1, it is characterized in that: described constant current change-over circuit (2) comprises bridge rectifier BR1, thermistor R19, triode Q1, integrated circuit (IC), transformer T1, metal-oxide-semiconductor Q2, piezo-resistance RZ2, diode D1 ~ D4, D6, resistance R1, R2, R33, R3, R5, R6, R7, R9, R29, R23, R13, R17, R18, R20, electric capacity C1, C21, C2, CY1, CY2, C3 ~ C5, C25, C26, C6, C17; 2 pin of described bridge rectifier BR connect input L1,3 pin connect another input N1,4 pin ground connection, 1 pin connects thermistor R19, piezo-resistance RZ2, resistance R33, R3, electric capacity C1, C21, C2, CY2, one end of voltage stabilizing didoe D4 and 6 pin of transformer T1; The other end ground connection of described piezo-resistance RZ2, electric capacity C1, C21; One end of the other end contact resistance R20 of described voltage stabilizing didoe D4, electric capacity C2, resistance R33, R3; The other end ground connection of described electric capacity CY2; The other end of one end contact resistance R20 of described diode D3,4 pin of other end connection transformer T1 and the drain electrode of metal-oxide-semiconductor Q2; One end of described diode D1 connects the other end of thermistor R19 and one end of resistance R17, one end of other end contact resistance R23, R1 and electric capacity C4; One end of the other end contact resistance R13 of described resistance R23, the collector electrode of the other end connecting triode Q1 of resistance R13; The base stage of other end connecting triode Q1 of the other end contact resistance R2 of described resistance R1, resistance R2 and 5 pin of integrated circuit (IC); The other end ground connection of described electric capacity C4; The emitter of described triode Q1 connects one end of electric capacity C25, C26, C5 and resistance R7 and 7 pin of integrated circuit (IC); The other end ground connection of described electric capacity C25, C26, C5; The other end of described resistance R7 connects one end of diode D2, the other end contact resistance R5 of this diode D2, one end of electric capacity C17 and 1 pin of transformer T1; 3 pin of other end connection transformer T1 of described electric capacity C17 and one end of electric capacity CY1 ground connection; The other end contact resistance R6 of described resistance R5, one end of electric capacity C6 and 6 pin of integrated circuit (IC); The other end of resistance R6, electric capacity C6 connects one end of electric capacity C3 and ground connection; The other end of electric capacity C3 connects 4 pin of integrated circuit (IC); Ground connection after 2 pin of integrated circuit (IC) are connected with 3 pin, one end of 1 pin contact resistance R29; The other end contact resistance R9 of resistance R29, one end of diode D6; The other end of resistance R9, diode D6 connects the grid of metal-oxide-semiconductor Q2; One end of the other end contact resistance R18 of described resistance R17, the other end of resistance R18 connects 8 pin of integrated circuit (IC), and connects an input CS of described output current regulating circuit (3); The source electrode of described metal-oxide-semiconductor Q2 connects another input S of output current regulating circuit (3); 8 pin of described transformer T1 connect an input L2 of described output filter circuit (4), 10 pin of the other end connection transformer T1 of described electric capacity CY1 ground connection, and connect another input N2 of output filter circuit (4).
4. LED drive power as claimed in claim 1, is characterized in that: described output current regulating circuit (3) comprises resistance R8, variable resistor R4; The two ends of described resistance R8 connect input CS, S respectively; One end of described variable resistor R4 connects input S, and the other end is adjustable position, and is connected to the ground.
5. LED drive power as claimed in claim 1, is characterized in that: described output filter circuit (4) comprises diode D8, resistance R10, R15, electric capacity C8 ~ C16, inductance L 4; One end of one end contact resistance R15 of described diode D8 also connects input L2; The other end of resistance R15 connects one end of electric capacity C14; The other end of electric capacity C14 connects the other end and electric capacity C8 ~ C13, one end of C15 and 4 pin of inductance L 4 of diode D8; The other end of electric capacity C8 ~ C13, C15 connects input N2, and connects 1 pin of inductance L 4; 3 pin of inductance L 4 connect one end of electric capacity C16, resistance R10, and connect the output LED+ of output filter circuit (4), and 2 pin of inductance L 4 connect the other end of electric capacity C16, resistance R10, and connect the output LED-of output filter circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420615816.0U CN204104199U (en) | 2014-10-23 | 2014-10-23 | A kind of LED drive power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420615816.0U CN204104199U (en) | 2014-10-23 | 2014-10-23 | A kind of LED drive power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204104199U true CN204104199U (en) | 2015-01-14 |
Family
ID=52272593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420615816.0U Expired - Fee Related CN204104199U (en) | 2014-10-23 | 2014-10-23 | A kind of LED drive power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204104199U (en) |
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2014
- 2014-10-23 CN CN201420615816.0U patent/CN204104199U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 314300, No. 33, Donggang Road, Haiyan Economic and Technological Development Zone, Zhejiang, Jiaxing Patentee after: SKYLED LIGHTING TECHNOLOGY ZHEJIANG CO., LTD. Address before: 314300 No. 33, Donggang Road, Haiyan Economic Development Zone, Jiaxing, Zhejiang, China Patentee before: Skyled Lighting Technology (Zhejiang) Co., Ltd. |
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| 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: 20150114 Termination date: 20181023 |