CN211860594U - LED dimming and color mixing circuit - Google Patents
LED dimming and color mixing circuit Download PDFInfo
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- CN211860594U CN211860594U CN202020818520.4U CN202020818520U CN211860594U CN 211860594 U CN211860594 U CN 211860594U CN 202020818520 U CN202020818520 U CN 202020818520U CN 211860594 U CN211860594 U CN 211860594U
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Abstract
The utility model provides a LED mixing of colors circuit of adjusting luminance belongs to LED technical field. It has solved the problem that current technique is with high costs on realizing adjusting luminance and mixing colors. This LED mixing of colors circuit of adjusting luminance is including being used for the power driver with mains connection, power driver's the interface connection of adjusting luminance has the module of adjusting luminance, power driver's output interface connection has the mixing of colors module of constituteing by the LED lamp pearl of a plurality of different colour temperatures, the module of adjusting luminance includes resistance R1, stabiliser U1 and the variable resistance module that is used for adjusting power driver pressure regulating interface voltage, variable resistance module connects between stabiliser U1's reference pole R and stabiliser U1's negative pole K, stabiliser U1's negative pole K is connected with power driver's the positive terminal DIM + of the interface of adjusting luminance through resistance R1, stabiliser U1's positive pole A is connected with power driver's the negative pole end DIM-of the interface of adjusting luminance, be connected with resistance R2 between stabiliser U1's positive pole A and. The utility model discloses can realize LED's the mixing of colors and reduce cost of adjusting luminance.
Description
Technical Field
The utility model belongs to the technical field of the LED, a LED mixing of colors circuit of adjusting luminance is related to.
Background
An LED is a semiconductor device capable of directly converting electric energy into optical energy, and the LED is used as a light source more and more widely due to its advantages of small size, long service life, high luminous efficiency, no radiation, low power consumption, and the like. And with the improvement of the living quality requirements of people, more and more LED lamps are required to have the functions of dimming and color mixing.
Currently, an operational amplifier is usually used to implement a dimming function, and a sampled voltage signal is sent to the operational amplifier and compared with a set reference voltage to obtain an adjustment signal. The dimming signal is generally obtained by changing a reference voltage of an operational amplifier after certain signal conversion, so as to adjust an output dimming current to control the brightness of the lamp. In this way, the circuit is relatively complex to build, and the cost of the chips such as the operational amplifier is higher than that of the common components such as the diode, the resistor and the capacitor.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, provide a LED mixing of colors circuit of adjusting luminance, this LED adjusts luminance the technical problem that mixing of colors circuit will solve does: how to realize the dimming and color modulation of the LED and reduce the cost.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides a LED mixing of colors circuit of adjusting luminance, includes the power driver who is used for with mains connection, its characterized in that, power driver's the interface connection of adjusting luminance has the module of adjusting luminance, power driver's output interface connection has the mixing of colors module of constituteing by the LED lamp pearl of a plurality of different colour temperatures, the module of adjusting luminance includes resistance R1, stabiliser U1 and is used for adjusting the variable resistance module of power driver pressure regulating interface voltage, variable resistance module connects between stabiliser U1's reference pole R and stabiliser U1's negative pole K, stabiliser U1's negative pole K is connected with power driver's the positive terminal DIM + of the interface of adjusting luminance through resistance R1, stabiliser U1's positive pole A and power driver's the negative pole end DIM-of the interface of adjusting luminance, be connected with resistance R2 between stabiliser U1's positive pole A and stabiliser U1's the reference pole R.
The working principle of the LED dimming and color mixing circuit is as follows: the color modulation module is used for selecting LED lamp beads with different color temperatures to light up, so that the LEDs can display different colors; meanwhile, the brightness of the LED is changed from bright to dark or from dark to bright through the dimming module, when the LED dimming circuit is used, the resistor R1 plays a role in current limiting protection, the voltage stabilizer U1, the resistor R2 and the variable resistor module are used for reducing the voltage of the dimming interface of the power driver, and the voltage of the dimming interface of the power driver can be changed by adjusting the resistance value of the variable resistor module, so that the dimming of the LED is realized. The LED dimming and color mixing circuit can realize the dimming and color mixing functions only by adopting one voltage stabilizer U1 and a plurality of resistors, and has the advantage of low cost.
In the above LED dimming and color-adjusting circuit, the variable resistor module includes a selection switch and a plurality of resistors with different resistance values, one end of each resistor is connected to the reference electrode R of the voltage stabilizer U1, the other end of each resistor is connected to the selection end b of the selection switch in a one-to-one correspondence, and the fixed end a of the selection switch is connected to the cathode K of the voltage stabilizer U1. The resistors with different resistance values are selectively switched on through the selection switch, so that the voltage of the dimming interface of the power driver is changed, and the dimming of the LED is realized.
In the above LED dimming and color-adjusting circuit, the variable resistance module includes a plurality of resistors, one end of each resistor is connected to the reference electrode R of the voltage regulator U1, and a button switch is connected between the other end of each resistor and the cathode K of the voltage regulator U1. The resistors with the same resistance value or different resistance values can be selected, and when the resistors with the same resistance value are selected, the voltage of the dimming interface of the power driver can be changed by closing different numbers of button switches; when selecting the resistance of different resistance size, the change of the voltage of the interface of adjusting luminance of power driver can be realized to the button switch of corresponding resistance size of accessible closure, also can realize the change to the voltage of the interface of adjusting luminance of power driver through the button switch of closed different quantity to the realization is to the variety that LED adjusted luminance.
In the above LED dimming and color-adjusting circuit, the dimming module further includes a capacitor C1, one end of the capacitor C1 is connected to the connection between the resistor R1 and the cathode K of the regulator U1, and the other end of the capacitor C1 is connected to the negative terminal DIM-. The capacitor C1 is arranged for playing a role of drying and ensuring the dimming effect.
In the above LED dimming and color-adjusting circuit, the dimming module further includes a diode D1, a cathode of the diode D1 is connected to a positive terminal DIM + of the dimming interface of the power driver, and an anode of the diode D1 is connected to a negative terminal DIM-. The diode D1 is used for preventing reverse connection and improving the safety of the circuit.
In foretell LED mixing of colors circuit of adjusting luminance, the mixing of colors module includes first colour temperature LED lamp pearl and second colour temperature LED lamp pearl, the one end of first colour temperature LED lamp pearl is connected the back with the positive terminal LED + of power driver's output interface with the one end of second colour temperature LED lamp pearl, be connected with first key switch between the other end of first colour temperature LED lamp pearl and the negative pole end LED-of power driver's output interface, be connected with second key switch between the other end of second colour temperature LED lamp pearl and the negative pole end LED-of power driver's output interface. Through the setting of first key switch and second key switch, when selecting first key switch and closing, first colour temperature LED lamp pearl is lighted, realizes a colour temperature effect, when selecting second key switch and closing, second colour temperature LED lamp pearl is lighted, realizes another kind of colour temperature effect, when first key switch and second key switch all closed, first colour temperature LED lamp pearl and second colour temperature LED lamp pearl all light, realize third kind colour temperature effect.
Compared with the prior art, this LED adjusts luminance mixing of colors circuit realizes the function of mixing of colors through the LED lamp pearl that adopts different colour temperatures, realizes the function of adjusting luminance through stabiliser and variable resistance module, and circuit structure is simple, when realizing that LED adjusts luminance mixing of colors, has still reduced the use cost of circuit.
Drawings
Fig. 1 is a schematic circuit diagram of a first embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a second embodiment of the present invention.
In the figure, 1, a power supply driver; 2. a dimming module; 21. a variable resistance module; 21a, a selection switch; 21b, a button switch; 3. a color matching module; 31. a first color temperature LED lamp bead; 32. a second color temperature LED lamp bead; 33. a first key switch; 34. and a second key switch.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in fig. 1, the LED dimming and color-adjusting circuit includes a power driver 1 connected to a mains supply, a dimming interface of the power driver 1 is connected to a dimming module 2, the dimming module 2 includes a resistor R1, a voltage regulator U1 and a variable resistor module 21 for adjusting a voltage at a voltage-regulating interface of the power driver 1, a cathode K of the voltage regulator U1 is connected to a positive terminal DIM + of the dimming interface of the power driver 1 through a resistor R1, an anode a of the voltage regulator U1 is connected to a negative terminal DIM-of the dimming interface of the power driver 1, a resistor R2 is connected between the anode a and a reference pole R of the voltage regulator U1, and the variable resistor module 21 is connected between the reference pole R and the cathode K of the voltage regulator U1; the output interface of the power driver 1 is connected with a color modulation module 3 consisting of a plurality of LED lamp beads 31 with different color temperatures.
Preferably, the color mixing module 3 comprises a first color temperature LED lamp bead 31 and a second color temperature LED lamp bead 32, one end of the first color temperature LED lamp bead 31 is connected with one end of the second color temperature LED lamp bead 32 and then connected with a positive end LED + of an output interface of the power driver 1, a first key switch 33 is connected between the other end of the first color temperature LED lamp bead 31 and a negative end LED-of the output interface of the power driver 1, and a second key switch 34 is connected between the other end of the second color temperature LED lamp bead 32 and the negative end LED-of the output interface of the power driver 1. First color temperature LED lamp pearl 31 adopts the LED lamp pearl of 3000K colour temperature, and second color temperature LED lamp pearl 32 adopts the LED lamp pearl of 5000K colour temperature, and as preferred, mixing of colors module 3 can also include the LED lamp pearl of other numerical value colour temperatures. The LED lamp beads 31 of each color temperature are respectively connected with a key switch as a circuit and then are connected with the output interface of the power driver 1. As another preferred scheme, the first key switch 33 and the second key switch 34 in the color modulation module 3 may also be replaced by selection switches, the selection switches are switches of one fixed end and a plurality of selection ends, and the connection of the LED lamp beads with different color temperatures is realized by controlling the connection of the fixed end and the selection ends. As the preferred, the quantity of first colour temperature LED lamp pearl and second colour temperature LED lamp pearl can be selected according to the demand.
Preferably, the variable resistance module 21 includes a selection switch 21a and a plurality of resistors with different resistance values, one end of each resistor is connected to the reference electrode R of the voltage regulator U1, the other end of each resistor is connected to the selection terminal b of the selection switch 21a in a one-to-one correspondence manner, and the fixed terminal a of the selection switch 21a is connected to the cathode K of the voltage regulator U1. As shown in FIG. 1, the resistors with different resistance values are resistors RAResistance RBResistance RZResistance RAOne terminal of (1), resistance RBOne end of (A), a resistance RZOne end of the resistor is connected with a reference electrode R of a voltage stabilizer U1, and a resistor RAAnother terminal of (1), a resistor RBThe other end of (A) is (B) a resistor RZAre respectively connected with the selection terminals b of the selection switches 21a in a one-to-one correspondence mannerA、bB······bz。
Preferably, the dimming module 2 further includes a capacitor C1, one end of the capacitor C1 is connected to the junction between the resistor R1 and the cathode K of the regulator U1, and the other end of the capacitor C1 is connected to the negative terminal DIM-of the dimming interface of the power driver 1. The capacitor C1 is arranged for playing a role of drying and ensuring the dimming effect.
Preferably, the dimming module 2 further includes a diode D1, a cathode of the diode D1 is connected to a positive terminal DIM + of the dimming interface of the power driver 1, and an anode of the diode D1 is connected to a negative terminal DIM-of the dimming interface of the power driver 1. The diode D1 is used for preventing reverse connection and improving the safety of the circuit.
The power driver 1 can be selected according to the requirement, and in the embodiment, the power driver 1 is preferably a driver with model number JG-100W-54D.
Preferably, voltage regulator U1 is a model TL431 voltage regulator chip.
The working principle of the LED dimming and color mixing circuit is as follows: when in use, the power driver 1 is connected with the commercial power, and the first key switch 33 or/and the second key switch 34 is/are switched on to realize the operationThe LED lamp beads 31 with the first color temperature are lightened or the LED lamp beads 32 with the second color temperature are lightened. The method specifically comprises the following steps: when the first key switch 33 is closed, the first color temperature effect is exhibited, and at the same time, the selection switch 21 can be adjusted, such as at the fixed end a of the selection switch 21 and the selection end b of the selection switch 21AWhen connected, the resistance RAIs connected between a reference pole R of a voltage stabilizer U1 and a cathode K of a voltage stabilizer U1; at the fixed end a of the selection switch 21 and the selection end b of the selection switch 21BWhen connected, the resistance RBIs connected between a reference pole R of a voltage stabilizer U1 and a cathode K of a voltage stabilizer U1; at the fixed end a of the selection switch 21 and the selection end b of the selection switch 21ZWhen connected, the resistance RZThe resistors with different resistance values are connected between the reference pole R of the voltage stabilizer U1 and the cathode K of the voltage stabilizer U1, so that the voltage of the dimming interface of the power driver 1 is changed, and the dimming effect, such as the dimming effect from light to dark or from dark to light, is realized; when the second key switch 34 is closed, another color temperature effect is exhibited, and the dimming operation is the same as described above.
Example two:
as shown in fig. 2, the technical solution of the present embodiment is substantially the same as that of the first embodiment, except that the variable resistance module 21 includes a plurality of resistors, one end of each resistor is connected to the reference electrode R of the voltage regulator U1, and a push button switch 21b is connected between the other end of each resistor and the cathode K of the voltage regulator U1. Specifically, as shown in fig. 2, the plurality of resistors are resistors RAResistance RBResistance RZResistance RAOne terminal of (1), resistance RBOne end of (A), a resistance RZOne end of the resistor is connected with a reference electrode R of a voltage stabilizer U1, and a resistor RAAnother terminal of (1), a resistor RBThe other end of (A) is (B) a resistor RZAnd the other ends of the two terminals are respectively connected with a button switch 21b and then connected with a cathode K of a voltage stabilizer U1. Resistance RAResistance RBResistance RZThe resistance values of the resistors can be selected to be the same or different.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides a LED mixing of colors circuit of adjusting luminance, includes power driver (1) that is used for with mains connection, its characterized in that, the interface connection of adjusting luminance of power driver (1) has module (2) of adjusting luminance, the output interface connection of power driver (1) has mixing of colors module (3) of constituteing by LED lamp pearl (31) of a plurality of different colour temperatures, adjust luminance module (2) including resistance R1, stabiliser U1 and be used for adjusting power driver (1) voltage regulation interface voltage variable resistance module (21), variable resistance module (21) are connected between stabiliser U1's reference pole R and stabiliser U1's negative pole K, stabiliser U1's negative pole K is connected through resistance R1 and power driver (1) the positive terminal DIM + of the interface of adjusting luminance, stabiliser U1's positive pole A is connected with the negative pole terminal DIM-of the interface of adjusting luminance of power driver (1), and a resistor R2 is connected between the anode A of the voltage stabilizer U1 and the reference pole R of the voltage stabilizer U1.
2. The LED dimming and toning circuit according to claim 1, wherein the variable resistor module (21) includes a selection switch (21a) and a plurality of resistors with different resistance values, one end of each resistor is connected to the reference pole R of the regulator U1, the other end of each resistor is connected to the selection end b of the selection switch (21a) in a one-to-one correspondence, and the fixed end a of the selection switch (21a) is connected to the cathode K of the regulator U1.
3. The LED dimming and toning circuit of claim 1, wherein the variable resistance module (21) comprises a plurality of resistors, one end of each resistor is connected with a reference pole R of a voltage regulator U1, and a button switch (21b) is respectively connected between the other end of each resistor and a cathode K of a voltage regulator U1.
4. The LED dimming and toning circuit according to claim 1, 2 or 3, wherein the dimming module (2) further comprises a capacitor C1, one end of the capacitor C1 is connected to the junction of the resistor R1 and the cathode K of the regulator U1, and the other end of the capacitor C1 is connected to the negative terminal DIM-of the dimming interface of the power driver (1).
5. The LED dimming and toning circuit according to claim 1, 2 or 3, wherein the dimming module (2) further comprises a diode D1, the cathode of the diode D1 is connected to the anode terminal DIM + of the dimming interface of the power driver (1), and the anode of the diode D1 is connected to the cathode terminal DIM-of the dimming interface of the power driver (1).
6. The LED dimming and color mixing circuit according to claim 1, 2 or 3, wherein the color mixing module (3) comprises a first color temperature LED lamp bead (31) and a second color temperature LED lamp bead (32), one end of the first color temperature LED lamp bead (31) is connected with one end of the second color temperature LED lamp bead (32) and then connected with a positive end LED + of an output interface of the power driver (1), a first key switch (33) is connected between the other end of the first color temperature LED lamp bead (31) and a negative end LED-of the output interface of the power driver (1), and a second key switch (34) is connected between the other end of the second color temperature LED lamp bead (32) and the negative end LED-of the output interface of the power driver (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020818520.4U CN211860594U (en) | 2020-05-15 | 2020-05-15 | LED dimming and color mixing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020818520.4U CN211860594U (en) | 2020-05-15 | 2020-05-15 | LED dimming and color mixing circuit |
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| CN211860594U true CN211860594U (en) | 2020-11-03 |
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| CN202020818520.4U Active CN211860594U (en) | 2020-05-15 | 2020-05-15 | LED dimming and color mixing circuit |
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| CN (1) | CN211860594U (en) |
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