CN104684181A - Adjustable three-channel high-power LED (light-emitting diode) drive circuit - Google Patents
Adjustable three-channel high-power LED (light-emitting diode) drive circuit Download PDFInfo
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- CN104684181A CN104684181A CN201310641924.5A CN201310641924A CN104684181A CN 104684181 A CN104684181 A CN 104684181A CN 201310641924 A CN201310641924 A CN 201310641924A CN 104684181 A CN104684181 A CN 104684181A
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Abstract
The invention discloses an adjustable three-channel high-power LED (light-emitting diode) drive circuit which comprises a blue light access L1, a red light access L2, a green light access L3, a variable potentiometer R1, a variable potentiometer R2, a variable potentiometer R3, a current-limiting resistor R4, a current-limiting resistor R5, a filter capacitor C1, a filter capacitor C2, a filter capacitor C3 and a three-channel driver chip U1, wherein the variable potentiometer R1, the variable potentiometer R2 and the variable potentiometer R3 are used for controlling the on or off of the blue light access L1, the red light access L2 and the green light access L3 respectively; when the value of resistance of one variable potentiometer is minimum, the corresponding light access is off and current dose not pass through the light access; when the value of resistance of one variable potentiometer is higher than the minimum value, the corresponding light access is on, current passes through the light access, and the light access works and emits light. According to the embodiment of the adjustable three-channel high-power LED drive circuit, light dimming and color modulation of LED single-color light combinations can be simplified.
Description
Technical field
The present invention relates to electronic circuit technology field, be specifically related to a kind of adjustable triple channel high-power LED drive circuit.
Background technology
Along with the development of LED technology, LED not only usage quantity gets more and more, and the scope of application is also more and more wider.Need colorful display, illumination place, too expensive with the full color LED sign of specialty, and with LED monochromatic light recombinant together, although cost is low, light modulation, mix colours very loaded down with trivial details.
Summary of the invention
The embodiment of the invention discloses a kind of adjustable triple channel high-power LED drive circuit, for simplifying light modulation and the toning of the combination of LED monochromatic light.
A kind of adjustable triple channel high-power LED drive circuit, comprising:
Blue light path L1, ruddiness path L2, green glow path L3, variable potentiometer R1 ~ R3, current-limiting resistance R4 ~ R5, filter capacitor C1 ~ C3, triple channel driving chip U1, wherein:
The input IN of described blue light path L1 is for connecting power supply, the output OUT of described blue light path L1 connects one end of described filter capacitor C1, the other end of described filter capacitor C1 is used for connecting earth terminal, the input IN of described ruddiness path L2 is for connecting power supply, the output OUT of described ruddiness path L2 connects one end of described filter capacitor C2, the other end of described filter capacitor C2 is used for connecting earth terminal, the input IN of described green glow path L3 is for connecting power supply, the output OUT of described green glow path L3 connects one end of described filter capacitor C3, the other end of described filter capacitor C3 is used for connecting earth terminal, one end of described current-limiting resistance R4 is for connecting power supply, the other end of described current-limiting resistance R4 connects the Enable Pin ENR of described triple channel driving chip U1 respectively, ENG and ENB, one end of described current-limiting resistance R5 is for connecting power supply, the other end of described current-limiting resistance R5 connects the power end VCC of described triple channel driving chip U1, the ground end GND of described triple channel driving chip U1 is used for connecting earth terminal, the constant current output end OUTB of described triple channel driving chip U1 connects the output OUT of described blue light path L1, the plug-in resistance terminal REXIB of described triple channel driving chip U1 connects one end of described variable potentiometer R1, the other end of described variable potentiometer R1 is used for connecting earth terminal, the plug-in resistance terminal REXIR of described triple channel driving chip U1 connects one end of described variable potentiometer R2, the other end of described variable potentiometer R2 is used for connecting earth terminal, the constant current output end OUTR of described triple channel driving chip U1 connects the output OUT of described ruddiness path L2, the constant current output end OUTG of described triple channel driving chip U1 connects the output OUT of described green glow path L3, the plug-in resistance terminal REXIG of described triple channel driving chip U1 connects one end of described variable potentiometer R3, the other end of described variable potentiometer R3 is used for connecting earth terminal.
Wherein, described electric current also comprises:
Voltage stabilizing didoe ZD1, filter capacitor C4, wherein:
The negative pole of described voltage stabilizing didoe ZD1 connects the other end of described current-limiting resistance R4, and the positive pole of described voltage stabilizing didoe ZD1 connects the ground end GND of described triple channel driving chip U1, and described filter capacitor C4 is connected in parallel described voltage stabilizing didoe ZD1.
Wherein, described blue light path L1 comprises blue-ray LED diode D1 ~ D3, wherein:
The positive pole of described blue-ray LED diode D1 is for connecting power supply, the negative pole of described blue-ray LED diode D1 connects the positive pole of described blue-ray LED diode D2, the negative pole of described blue-ray LED diode D2 connects the positive pole of described blue-ray LED diode D3, and the negative pole of described blue-ray LED diode D3 connects one end of described filter capacitor C1.
Wherein, described ruddiness path L2 comprises red-light LED diode D4 ~ D6, wherein:
The positive pole of described red-light LED diode D4 is for connecting power supply, the negative pole of described red-light LED diode D4 connects the positive pole of described red-light LED diode D5, the negative pole of described red-light LED diode D5 connects the positive pole of described red-light LED diode D6, and the negative pole of described red-light LED diode D6 connects one end of described filter capacitor C2.
Wherein, described green glow path L3 comprises green light LED diode D7 ~ D9, wherein:
The positive pole of described green light LED diode D7 is for connecting power supply, the negative pole of described green light LED diode D7 connects the positive pole of described green light LED diode D8, the negative pole of described green light LED diode D8 connects the positive pole of described green light LED diode D9, and the negative pole of described green light LED diode D9 connects one end of described filter capacitor C3.
Alternatively, described power supply is the alternating current of 12V.
Alternatively, the model of described triple channel driving chip U1 is DD313.
Alternatively, the model of described voltage stabilizing didoe ZD1 is IN4733.
Alternatively, the span of described variable potentiometer R1 ~ R3 is 1-2k Ω.
Alternatively, the span of described current-limiting resistance R4 is 1-2k Ω.
In the embodiment of the present invention, variable potentiometer R1, R2 and R3 are respectively used to control blue light path L1, being turned on or off of ruddiness path L2 and green glow path L3, when the resistance of variable potentiometer is minimum, corresponding light path disconnects, electric current is not had to flow through light path, when the resistance of variable potentiometer is greater than minimum value, corresponding light path conducting, have electric current to flow through light path, light path work is also luminous.In the embodiment of the present invention, the color of light can be regulated by the resistance changing potentiometer, therefore, light modulation and the toning of LED monochromatic light combination can be simplified.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of a kind of adjustable triple channel high-power LED drive circuit disclosed by the invention;
Fig. 2 is the structure chart of the adjustable triple channel high-power LED drive circuit of another kind disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of adjustable triple channel high-power LED drive circuit, for simplifying light modulation and the toning of the combination of LED monochromatic light.Below be described in detail respectively.
Refer to Fig. 1, Fig. 1 is a kind of adjustable triple channel high-power LED drive circuit disclosed in the embodiment of the present invention.As shown in Figure 1, this adjustable triple channel high-power LED drive circuit can comprise:
Blue light path L1, ruddiness path L2, green glow path L3, variable potentiometer R1 ~ R3, current-limiting resistance R4 ~ R5, filter capacitor C1 ~ C3, triple channel driving chip U1, wherein:
The input IN of blue light path L1 is for connecting power supply, the output OUT of blue light path L1 connects one end of filter capacitor C1, the other end of filter capacitor C1 is used for connecting earth terminal, the input IN of ruddiness path L2 is for connecting power supply, the output OUT of ruddiness path L2 connects one end of filter capacitor C2, the other end of filter capacitor C2 is used for connecting earth terminal, the input IN of green glow path L3 is for connecting power supply, the output OUT of green glow path L3 connects one end of filter capacitor C3, the other end of filter capacitor C3 is used for connecting earth terminal, one end of current-limiting resistance R4 is for connecting power supply, the Enable Pin ENR of the other end difference connecting tee road driving chip U1 of current-limiting resistance R4, ENG and ENB, one end of current-limiting resistance R5 is for connecting power supply, the power end VCC of the other end connecting tee road driving chip U1 of current-limiting resistance R5, the ground end GND of triple channel driving chip U1 is used for connecting earth terminal, the constant current output end OUTB of triple channel driving chip U1 connects the output OUT of blue light path L1, the plug-in resistance terminal REXIB of triple channel driving chip U1 connects one end of variable potentiometer R1, the other end of variable potentiometer R1 is used for connecting earth terminal, the plug-in resistance terminal REXIR of triple channel driving chip U1 connects one end of variable potentiometer R2, the other end of variable potentiometer R2 is used for connecting earth terminal, the constant current output end OUTR of triple channel driving chip U1 connects the output OUT of ruddiness path L2, the constant current output end OUTG of triple channel driving chip U1 connects the output OUT of green glow path L3, the plug-in resistance terminal REXIG of triple channel driving chip U1 connects one end of variable potentiometer R3, the other end of variable potentiometer R3 is used for connecting earth terminal.
Wherein, the operation principle of the adjustable triple channel high-power drive circuit shown in Fig. 1 is: L1 is blue light path, L2 is ruddiness path, L3 is green glow path, R1 ~ R3 is variable potentiometer, R4 ~ R5 is current-limiting resistance, C1 ~ C3 is filter capacitor, U1 is triple channel driving chip, power supply provides high level by current-limiting resistance R4 to the Enable Pin ENR of triple channel driving chip U1, ENG, ENB, the enable signal of guarantee blue light path L1, ruddiness path L2 and green glow path L3 is high level always, so that blue light path L1, ruddiness path L2 and being turned on or off of green glow path L3 only depend on variable potentiometer R1, R2 and R3 respectively, wherein, when the resistance of variable potentiometer R1 is minimum, blue light path L1 disconnects, blue light path L1 does not have electric current to flow through, blue light path L1 does not work, when the resistance of variable potentiometer R1 is greater than minimum value, and blue light path L1 conducting, blue light path L1 has electric current to flow through, and blue light path L1 works and sends blue light, when the resistance of variable potentiometer R2 is minimum, ruddiness path L2 disconnects, ruddiness path L2 does not have electric current to flow through, ruddiness path L2 does not work, when the resistance of variable potentiometer R2 is greater than minimum value, ruddiness path L2 conducting, ruddiness path L2 has electric current to flow through, and ruddiness path L2 works and sends red light, when the resistance of variable potentiometer R3 is minimum, green glow path L3 disconnects, green glow path L3 does not have electric current to flow through, green glow path L3 does not work, when the resistance of variable potentiometer R3 is greater than minimum value, green glow path L3 conducting, green glow path L3 has electric current to flow through, and green glow path L3 works and sends green light, when triple channel driving chip U1 works, can by variable potentiometer R1, any two in R2 and R3 are adjusted to minimum resistance, only send single blue light, ruddiness or green glow, also can by variable potentiometer R1, any one in R2 and R3 is adjusted to minimum resistance, send bluish-green, the mixed light of blue red or red green two kinds of light, can also by variable potentiometer R1, the resistance of R2 and R3 is all adjusted to and is greater than minimum resistance, send the mixed light of bluish-green red three kinds of light, in addition, can also by regulating variable potentiometer R1, the size of R2 and R3 resistance changes corresponding monochromatic mixed proportion in mixed light.Wherein, filter capacitor C1 ~ C3 is used for the voltage stablizing triple channel driving chip U1 constant current output end OUTB, OUTR and OUTG.
Above, be exactly scheme and the principles and methods of the embodiment of the present invention, sum up and be respectively used to control blue light path L1, being turned on or off of ruddiness path L2 and green glow path L3 by variable potentiometer R1, R2 and R3 exactly, when the resistance of variable potentiometer is minimum, corresponding light path disconnects, and does not have electric current to flow through light path, when the resistance of variable potentiometer is greater than minimum value, corresponding light path conducting, has electric current to flow through light path, and light path work is also luminous.
Adjustable triple channel high-power LED drive circuit disclosed in the embodiment of the present invention can regulate the color of light by the resistance changing potentiometer, therefore, can simplify light modulation and the toning of LED monochromatic light combination.
Refer to Fig. 2, Fig. 2 is another kind of adjustable triple channel high-power drive circuit disclosed in the embodiment of the present invention.Wherein, adjustable triple channel high-power drive circuit shown in Fig. 2 is optimized the adjustable triple channel high-power drive circuit shown in Fig. 1 to obtain, compared with the adjustable triple channel high-power drive circuit shown in Fig. 1, the adjustable triple channel high-power drive circuit shown in Fig. 2 can also comprise:
Voltage stabilizing didoe ZD1, filter capacitor C4, wherein:
The negative pole of voltage stabilizing didoe ZD1 connects the other end of current-limiting resistance R4, and the ground end GND of the positive pole connecting tee road driving chip U1 of voltage stabilizing didoe ZD1, filter capacitor C4 is connected in parallel voltage stabilizing didoe ZD1.
Wherein, blue light path L1 can comprise blue-ray LED diode D1 ~ D3, wherein:
The positive pole of blue-ray LED diode D1 is for connecting power supply, the negative pole of blue-ray LED diode D1 connects the positive pole of blue-ray LED diode D2, the negative pole of blue-ray LED diode D2 connects the positive pole of blue-ray LED diode D3, and the negative pole of blue-ray LED diode D3 connects one end of filter capacitor C1.
Wherein, ruddiness path L2 comprises red-light LED diode D4 ~ D6, wherein:
The positive pole of red-light LED diode D4 is for connecting power supply, the negative pole of red-light LED diode D4 connects the positive pole of red-light LED diode D5, the negative pole of red-light LED diode D5 connects the positive pole of red-light LED diode D6, and the negative pole of red-light LED diode D6 connects one end of filter capacitor C2.
Wherein, green glow path L3 comprises green light LED diode D7 ~ D9, wherein:
The positive pole of green light LED diode D7 is for connecting power supply, the negative pole of green light LED diode D7 connects the positive pole of green light LED diode D8, the negative pole of green light LED diode D8 connects the positive pole of green light LED diode D9, and the negative pole of green light LED diode D9 connects one end of filter capacitor C3.
Alternatively, power supply is the alternating current of 12V.
Alternatively, the model of triple channel driving chip U1 is DD313.
Alternatively, the model of voltage stabilizing didoe ZD1 is IN4733.
Alternatively, the span of variable potentiometer R1 ~ R3 is 1-2k Ω.
Alternatively, the span of current-limiting resistance R4 is 1-2k Ω.
Wherein, the operation principle of the adjustable triple channel high-power drive circuit shown in Fig. 2 is: D1 ~ D3 is blue-ray LED diode, D4 ~ D6 is red-light LED diode, D7 ~ D9 is green light LED diode, R1 ~ R3 is variable potentiometer, R4 is current-limiting resistance, C1 ~ C4 is filter capacitor, ZD1 is voltage stabilizing didoe, U1 is triple channel driving chip, power supply provides high level by current-limiting resistance R4 to the Enable Pin ENR of triple channel driving chip U1, ENG, ENB, the enable signal of guarantee blue light path L1, ruddiness path L2 and green glow path L3 is high level always, so that blue light path L1, ruddiness path L2 and being turned on or off of green glow path L3 only depend on variable potentiometer R1, R2 and R3 respectively, wherein, when the resistance of variable potentiometer R1 is minimum, blue light path L1 disconnects, blue-ray LED diode D1 ~ D3 does not have electric current to flow through, blue-ray LED diode D1 ~ D3 does not work, when the resistance of variable potentiometer R1 is greater than minimum value, and blue light path L1 conducting, blue-ray LED diode D1, D2 and D3 have electric current to flow through, and blue-ray LED diode D1, D2 and D3 work and send blue light, when the resistance of variable potentiometer R2 is minimum, ruddiness path L2 disconnects, red-light LED diode D4 ~ D6 does not have electric current to flow through, red-light LED diode D4 ~ D6 does not work, when the resistance of variable potentiometer R2 is greater than minimum value, ruddiness path L2 conducting, red-light LED diode D4, D5 and D6 have electric current to flow through, and red-light LED diode D4, D5 and D5 work and send red light, when the resistance of variable potentiometer R3 is minimum, green glow path L3 disconnects, green light LED diode D7 ~ D9 does not have electric current to flow through, green light LED diode D7 ~ D9 does not work, when the resistance of variable potentiometer R3 is greater than minimum value, green glow path L3 conducting, green light LED diode D7, D8 and D9 have electric current to flow through, and green light LED diode D7, D8 and D9 work and send green light, when triple channel driving chip U1 works, can by variable potentiometer R1, any two in R2 and R3 are adjusted to minimum resistance, only send single blue light, ruddiness or green glow, also can by variable potentiometer R1, any one in R2 and R3 is adjusted to minimum resistance, send bluish-green, the mixed light of blue red or red green two kinds of light, can also by variable potentiometer R1, the resistance of R2 and R3 is all adjusted to and is greater than minimum resistance, send the mixed light of bluish-green red three kinds of light, in addition, can also by regulating variable potentiometer R1, the size of R2 and R3 resistance changes corresponding monochromatic mixed proportion in mixed light.Wherein, triple channel driving chip U1 power end VCC and ground hold voltage stabilization between GND at 5.1V by voltage stabilizing didoe ZD1, can reduce the operating voltage of triple channel driving chip U1, thus can reduce power consumption; Filter capacitor C1 ~ C3 is used for the voltage stablizing triple channel driving chip U1 constant current output end OUTB, OUTR and OUTG.
Above, be exactly scheme and the principles and methods of the embodiment of the present invention, sum up and be respectively used to control blue light path L1, being turned on or off of ruddiness path L2 and green glow path L3 by variable potentiometer R1, R2 and R3 exactly, when the resistance of variable potentiometer is minimum, light path disconnects, and does not have electric current to flow through LED diode, when the resistance of variable potentiometer is greater than minimum value, light path conducting, has electric current to flow through LED diode, and LED diode operation is also luminous.
Adjustable triple channel high-power LED drive circuit disclosed in the embodiment of the present invention can regulate the color of light by the resistance changing potentiometer, therefore, can simplify light modulation and the toning of LED monochromatic light combination.
Above adjustable triple channel high-power LED drive circuit that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. an adjustable triple channel high-power LED drive circuit, is characterized in that, comprising:
Blue light path L1, ruddiness path L2, green glow path L3, variable potentiometer R1 ~ R3, current-limiting resistance R4 ~ R5, filter capacitor C1 ~ C3, triple channel driving chip U1, wherein:
The input IN of described blue light path L1 is for connecting power supply, the output OUT of described blue light path L1 connects one end of described filter capacitor C1, the other end of described filter capacitor C1 is used for connecting earth terminal, the input IN of described ruddiness path L2 is for connecting power supply, the output OUT of described ruddiness path L2 connects one end of described filter capacitor C2, the other end of described filter capacitor C2 is used for connecting earth terminal, the input IN of described green glow path L3 is for connecting power supply, the output OUT of described green glow path L3 connects one end of described filter capacitor C3, the other end of described filter capacitor C3 is used for connecting earth terminal, one end of described current-limiting resistance R4 is for connecting power supply, the other end of described current-limiting resistance R4 connects the Enable Pin ENR of described triple channel driving chip U1 respectively, ENG and ENB, one end of described current-limiting resistance R5 is for connecting power supply, the other end of described current-limiting resistance R5 connects the power end VCC of described triple channel driving chip U1, the ground end GND of described triple channel driving chip U1 is used for connecting earth terminal, the constant current output end OUTB of described triple channel driving chip U1 connects the output OUT of described blue light path L1, the plug-in resistance terminal REXIB of described triple channel driving chip U1 connects one end of described variable potentiometer R1, the other end of described variable potentiometer R1 is used for connecting earth terminal, the plug-in resistance terminal REXIR of described triple channel driving chip U1 connects one end of described variable potentiometer R2, the other end of described variable potentiometer R2 is used for connecting earth terminal, the constant current output end OUTR of described triple channel driving chip U1 connects the output OUT of described ruddiness path L2, the constant current output end OUTG of described triple channel driving chip U1 connects the output OUT of described green glow path L3, the plug-in resistance terminal REXIG of described triple channel driving chip U1 connects one end of described variable potentiometer R3, the other end of described variable potentiometer R3 is used for connecting earth terminal.
2. circuit as claimed in claim 1, it is characterized in that, described electric current also comprises:
Voltage stabilizing didoe ZD1, filter capacitor C4, wherein:
The negative pole of described voltage stabilizing didoe ZD1 connects the other end of described current-limiting resistance R4, and the positive pole of described voltage stabilizing didoe ZD1 connects the ground end GND of described triple channel driving chip U1, and described filter capacitor C4 is connected in parallel described voltage stabilizing didoe ZD1.
3. circuit as claimed in claim 1, it is characterized in that, described blue light path L1 comprises blue-ray LED diode D1 ~ D3, wherein:
The positive pole of described blue-ray LED diode D1 is for connecting power supply, the negative pole of described blue-ray LED diode D1 connects the positive pole of described blue-ray LED diode D2, the negative pole of described blue-ray LED diode D2 connects the positive pole of described blue-ray LED diode D3, and the negative pole of described blue-ray LED diode D3 connects one end of described filter capacitor C1.
4. circuit as claimed in claim 1, it is characterized in that, described ruddiness path L2 comprises red-light LED diode D4 ~ D6, wherein:
The positive pole of described red-light LED diode D4 is for connecting power supply, the negative pole of described red-light LED diode D4 connects the positive pole of described red-light LED diode D5, the negative pole of described red-light LED diode D5 connects the positive pole of described red-light LED diode D6, and the negative pole of described red-light LED diode D6 connects one end of described filter capacitor C2.
5. circuit as claimed in claim 1, it is characterized in that, described green glow path L3 comprises green light LED diode D7 ~ D9, wherein:
The positive pole of described green light LED diode D7 is for connecting power supply, the negative pole of described green light LED diode D7 connects the positive pole of described green light LED diode D8, the negative pole of described green light LED diode D8 connects the positive pole of described green light LED diode D9, and the negative pole of described green light LED diode D9 connects one end of described filter capacitor C3.
6. the circuit as described in any one of claim 1-5, is characterized in that, described power supply is the alternating current of 12V.
7. the circuit as described in any one of claim 1-5, is characterized in that, the model of described triple channel driving chip U1 is DD313.
8. the circuit as described in any one of claim 1-5, is characterized in that, the model of described voltage stabilizing didoe ZD1 is IN4733.
9. the circuit as described in any one of claim 1-5, is characterized in that, the span of described variable potentiometer R1 ~ R3 is 1-2k Ω.
10. the circuit as described in any one of claim 1-5, is characterized in that, the span of described current-limiting resistance R4 is 1-2k Ω.
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|---|---|---|---|
| CN201310641924.5A CN104684181A (en) | 2013-12-03 | 2013-12-03 | Adjustable three-channel high-power LED (light-emitting diode) drive circuit |
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| CN201310641924.5A CN104684181A (en) | 2013-12-03 | 2013-12-03 | Adjustable three-channel high-power LED (light-emitting diode) drive circuit |
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| CN201374852Y (en) * | 2009-03-20 | 2009-12-30 | 电子科技大学 | Light-emitting diode light source constant current driving module |
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