CN104780696A - LED segmentation light dimming constant current driving power supply - Google Patents
LED segmentation light dimming constant current driving power supply Download PDFInfo
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- CN104780696A CN104780696A CN201510223114.7A CN201510223114A CN104780696A CN 104780696 A CN104780696 A CN 104780696A CN 201510223114 A CN201510223114 A CN 201510223114A CN 104780696 A CN104780696 A CN 104780696A
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Abstract
The invention aims to provide an LED segmentation light dimming constant current driving power supply. The LED segmentation light dimming constant current driving power supply comprises an LED constant current driving power supply circuit, a current sampling resistor R4, a current sampling resistor R5, a current sampling resistor R6 and a segmentation light dimming circuit, wherein the current sampling resistor R4, the current sampling resistor R5, the current sampling resistor R6 are arranged in parallel in an external connection mode between a 7th pin and an 8th pin of a power supply constant current driving chip IC1 and a power supply body in the LED constant current driving power supply circuit, and the segmentation light dimming circuit is used for controlling the loading of the R4, the R5 and the R6. The LED segmentation light dimming constant current driving power supply solves the problems that existing LED lighting equipment is not ideal in light dimming, and a light dimmer is complex in control, high in cost and large in energy consumption.
Description
Technical field
The present invention relates to a kind of LED drive power, be specially a kind of LED sectional dimming constant-current driving power supply.
Technical background
LED illumination device, as the novel illumination light source of present lighting field, than conventional incandescent streetlamp energy-saving more than 80%, there is the plurality of advantages such as energy-saving and environmental protection, but due to the particularity of LED illumination device type of drive, general LED illumination device can not carry out Dimming operation, limits the range of application of LED illumination device.
For the problems referred to above, LED practitioner light modulation can not carry out various improvement to LED illumination device, but it is complicated still to there is control, and cost is high, and consume energy large problem.
Summary of the invention
The object of the present invention is to provide a kind of LED sectional dimming constant-current driving power supply, it is undesirable to solve existing LED illumination device light modulation, light modulating device exist control complicated, cost is high, consume energy large problem.
For achieving the above object, technical scheme of the present invention is: a kind of LED sectional dimming constant-current driving power supply, comprise LED constant current driving power circuit, it is characterized in that: external current sampling resistor R4, R5, R6 be arranged in parallel between 7,8 pin of the power supply constant-current driven chip IC1 in described LED constant current driving power circuit and power cathode
Also comprise a sectional dimming circuit, comprise a sectional dimming chip IC 2, relay J 1, J2, described sectional dimming circuit is connected with power supply, 7 pin of IC2 are connected with coil-end pin 85 pin of relay J 1,8 pin of IC2 are connected with the coil-end pin 85 of relay J 2, and the coil-end pin 86 of relay J 1, J2 is connected with power supply;
87 pin of described relay J 1 are electrically connected with sampling resistor R5, and 87 pin of relay J 2 are electrically connected with sampling resistor R6, and 30 pin of relay J 1, J2 are electrically connected with power cathode.
Power supply constant-current driven chip IC1, model is CSC8935.
A sectional dimming chip IC 2, model is NS1834.
The present invention, on the basis of traditional LED constant current driving power, adds tunable optical circuit, and by the resistance of the current sampling resistor that regulates 7,8 pin of IC1 external, adjusted constant current driver output size of current, realizes the object of LED dimming light-emitting diode.
LED sectional dimming constant-current driving power supply of the present invention, other LED dimming power source, has the advantages such as circuit structure is simple, cost is little, energy-efficient relatively.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the embodiment of the present invention.
Embodiment
As shown in Figure 1; a kind of LED sectional dimming constant-current driving power supply, comprises LED constant current driving power circuit, the power supply constant-current driven chip IC1 in circuit; model is CSC8935; 1 pin of IC1 is chip ground end, and 2 pin are open-circuit-protection voltage-regulation end, and 3 pin are empty pin; 4 pin are chip power end; 5,6 pin are the drain electrode of internal high pressure power tube, and 7,8 pin are current sample end
Also comprise the first current rectifying and wave filtering circuit be made up of rectifier diode D1, D2, D3, D4 and filter capacitor C1, first filter rectifier input is electrically connected with civil power P, output lead up to 4 pin supplying resistance R2 and IC1 4 pin electrical connection, decoupling capacitor C2 one end is connected with 4 pin supplying resistance R2 points, the other end is connected with civil power P, 2 pin of IC1 are electrically connected with 2 pin external open-circuit-protection voltage-regulation resistance R3, and the R3 other end is communicated with civil power P; Another road of first rectification filter circuit output end is electrically connected with LED light-emitting diode D14 to Dn, light-emitting diode D14 to the Dn other end is connected with filter capacitor C3, inductance L 1 one end respectively, inductance L 1 other end is electrically connected with IC15,6 pin, filter capacitor C3 connects with sustained diode 5, sustained diode 5 other end of connecting is electrically connected with IC15,6 pin
External current sampling resistor R4, R5, R6 be arranged in parallel between 7,8 pin of IC1 and power cathode.
The number of the peak power output of IC1 chip to be the single power of 36W, D14 to Dn be 1W, D14 to Dn should be 24 to 36.
Also comprise a sectional dimming circuit, comprise a sectional dimming chip IC 2, model is NS1834,1 pin of IC2 is chip ground end, and 2,7,8 pin are power take-off, and 3 pin are external reset end, 4 pin are control signal input, and 5 pin are chip power end, and 6 pin are mode setting terminal.
4 pin of IC2 are connected with 4 pin signal input resistance R9 one end, the 4 pin signal input resistance R9 other ends are connected with current limliting supplying resistance R8 one end, the second rectification filter circuit output end that the current limliting supplying resistance R8 other end and filter capacitor C5, rectifier diode D6, D7, D8, D9 form is connected, second current rectifying and wave filtering circuit input is connected with civil power P by decompression capacitor C4, and R1 is the discharge resistance of C4;
Another road of second rectification filter circuit output end is connected with isolating diode D11 one end, the isolating diode D11 other end is electrically connected with 5,6 pin of IC2 respectively and decoupling capacitor C7 is connected, the decoupling capacitor C7 other end is connected with civil power P, 1 pin of IC2 is connected with civil power P, 7 pin of IC2 are connected with relay J 1 coil-end pin 85,8 pin of IC2 are connected with the coil-end pin 85 of relay J 2, and the coil-end pin 86 of relay J 1, J2 is connected with power supply;
D12, D13 are fly-wheel diode.
87 pin of relay J 1 are electrically connected with sampling resistor R5, and 87 pin of relay J 2 are electrically connected with sampling resistor R6, and 30 pin of relay J 1, J2 are connected with civil power P negative electricity.
During circuit working, civil power 220V alternating current is through insurance RD, and the first filter rectifier be made up of rectifier diode D1, D2, D3, D4, decoupling capacitor C2,4 pin supplying resistance R2 and filter capacitor C1, forms stable direct voltage.Positive step voltage one tunnel of electric capacity C1 supplies the 4 pin operating voltages of IC1 through resistance R2, another road is through LED light-emitting diode D14 to Dn, and inductance L 1 arrives 5,6 pin of IC1.IC1 starts working, and arrives inductance L 1 from 5,6 pin output switch pulse voltages.Induced voltage in inductance L 1, through D5 rectification C3 filtering, driving LED light-emitting diode D14 to Dn is luminous.
Another road of civil power 220V alternating current is through R1 and C4 step-down, and the second current rectifying and wave filtering circuit of D6, D7, D8, D9 and C5 composition, supplies IC2 and J1, J2 operating voltage.When opening powered-down switch continuously, will in 2 of IC2,7,8 pin, export the control signal of corresponding various combination, in the present embodiment, do not connect 2 pin of IC2, only connect 7 of IC2,8 pin.The control output timing of IC2 is: 1. 2 pin export, and because 2 pin do not connect, J1, J2 present off-state, and 7, the 8 pin current sense resistors of IC1 only have R4; 2. 7 pin export, control J1 adhesive, R5 and R4 parallel running; 3. 8 pin export, control J2 adhesive, R6 and R4 parallel running; 4. 2,7,8 pin export, control J1, J2 adhesive, R4, R5, R6 parallel running.The brightness order of corresponding control LED light-emitting diode is, the most secretly, dark, bright, the brightest.Change with this sequential loop, achieve the object of LED constant current drive segment light modulation.
Claims (3)
1. a LED sectional dimming constant-current driving power supply, comprise LED constant current driving power circuit, it is characterized in that: external current sampling resistor R4, R5, R6 be arranged in parallel between 7,8 pin of the power supply constant-current driven chip IC1 in described LED constant current driving power circuit and power supply
Also comprise a sectional dimming circuit, comprise a sectional dimming chip IC 2, relay J 1, J2, sectional dimming circuit is connected with power supply, 7 pin of IC2 are connected with coil-end pin 85 pin of relay J 1,8 pin of IC2 are connected with the coil-end pin 85 of relay J 2, and the coil-end pin 86 of relay J 1, J2 is connected with power supply;
87 pin of described relay J 1 are electrically connected with sampling resistor R5, and 87 pin of relay J 2 are electrically connected with sampling resistor R6, and 30 pin of relay J 1, J2 are electrically connected with power cathode.
2. LED sectional dimming constant-current driving power supply according to claim 1, it is characterized in that: power supply constant-current driven chip IC1, model is CSC8935.
3. according to the LED sectional dimming constant-current driving power supply described in claim 1, it is characterized in that: sectional dimming chip IC 2, model is NS1834.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223114.7A CN104780696A (en) | 2015-05-05 | 2015-05-05 | LED segmentation light dimming constant current driving power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223114.7A CN104780696A (en) | 2015-05-05 | 2015-05-05 | LED segmentation light dimming constant current driving power supply |
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| CN104780696A true CN104780696A (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510223114.7A Pending CN104780696A (en) | 2015-05-05 | 2015-05-05 | LED segmentation light dimming constant current driving power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248441A (en) * | 2019-05-22 | 2019-09-17 | 鹰潭阳光照明有限公司 | A kind of intelligent light-controlled linear LED lamp circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202889723U (en) * | 2012-10-18 | 2013-04-17 | 罗斌 | LED primary constant current power supply output current adjusting control circuit |
| US20150084513A1 (en) * | 2013-09-20 | 2015-03-26 | Osram Sylvania Inc. | Techniques and graphical user interface for controlling solid-state luminaire with electronically adjustable light beam distribution |
| CN204598402U (en) * | 2015-05-05 | 2015-08-26 | 卫斌鹏 | Based on the LED sectional dimming power supply of power supply constant-current driven chip CSC8935 |
-
2015
- 2015-05-05 CN CN201510223114.7A patent/CN104780696A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202889723U (en) * | 2012-10-18 | 2013-04-17 | 罗斌 | LED primary constant current power supply output current adjusting control circuit |
| US20150084513A1 (en) * | 2013-09-20 | 2015-03-26 | Osram Sylvania Inc. | Techniques and graphical user interface for controlling solid-state luminaire with electronically adjustable light beam distribution |
| CN204598402U (en) * | 2015-05-05 | 2015-08-26 | 卫斌鹏 | Based on the LED sectional dimming power supply of power supply constant-current driven chip CSC8935 |
Non-Patent Citations (2)
| Title |
|---|
| 佚名: "NS1834高性能电子分段开关控制IC的应用", 《百度文库》 * |
| 钲铭科电源芯片: "CSC8932非隔离降压型LED恒流驱动芯片-CSC8933和CSC89", 《百度文库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248441A (en) * | 2019-05-22 | 2019-09-17 | 鹰潭阳光照明有限公司 | A kind of intelligent light-controlled linear LED lamp circuit |
| CN110248441B (en) * | 2019-05-22 | 2021-04-20 | 鹰潭阳光照明有限公司 | Intelligent light-operated linear LED lamp circuit |
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Application publication date: 20150715 |