CN111970798A - Circuit for alternately controlling LED lamp beads - Google Patents
Circuit for alternately controlling LED lamp beads Download PDFInfo
- Publication number
- CN111970798A CN111970798A CN201910418385.6A CN201910418385A CN111970798A CN 111970798 A CN111970798 A CN 111970798A CN 201910418385 A CN201910418385 A CN 201910418385A CN 111970798 A CN111970798 A CN 111970798A
- Authority
- CN
- China
- Prior art keywords
- led
- capacitor
- power supply
- control circuit
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011324 bead Substances 0.000 title claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 105
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 11
- 238000004146 energy storage Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Abstract
The invention discloses a circuit for alternately controlling LED lamp beads, which comprises an LED lamp tube, a single-chip microcomputer control circuit and an LED power supply control circuit, wherein the LED power supply control circuit comprises a blue LED power supply control circuit, a red LED power supply control circuit, a green LED power supply control circuit, a yellow LED power supply control circuit and a white LED power supply control circuit. According to the invention, the independent LED power supply control circuit is adopted to provide the working voltage for the LED lamp tube, so that unnecessary energy loss is reduced to the maximum extent, the power consumption of the constant current LED driver is reduced, and meanwhile, the temperature rise of the constant current LED driver is also reduced. Meanwhile, the constant-current LED driver is adopted to independently control the LED lamp tube, and the color development capability and the color development effect of the T12 lamp are greatly enriched on the premise of not increasing the number of the LED lamp tubes.
Description
Technical Field
The invention belongs to the technical field of integrated circuits, and particularly relates to a circuit for alternately controlling LED lamp beads.
Background
A three-primary-color LED (LED is an abbreviation of Light Emitting Diode, i.e. a Light Emitting Diode, is a semiconductor solid Light Emitting device, which uses a solid semiconductor chip as a Light Emitting material, when a forward voltage is applied across two ends, carriers in the semiconductor are recombined to cause photon emission to generate Light, the LED can directly emit red, yellow, blue, green, cyan, orange, violet, and white Light, also called a full-color LED, the inside is composed of LEDs of three colors of red, green, and blue, and the LED can emit different colors by using a three-primary-color principle, a T12 color-modulation dimming lamp manufactured by using the full-color LED is currently applied in many industries (including stage theaters), T12 is the name of a fluorescent lamp, "T", representing "Tube", representing the diameter of the Tube, the number behind T represents 1/8 inches, one inch is equal to 25.4 mm, each "T" is 25.4 ÷ 8 ═ 3.175mm, the diameter of the T12 lamp tube is (12/8) × 25.4 ═ 38.1 mm, the functional block diagram of the control circuit of the present color-adjustable light-adjusting lamp of T12 is shown in fig. 1, the three LEDs of the circuit share the power supply circuit with single voltage, because the voltage drops of the three LEDs are different, the tube voltage drop of the red LED is about 2V generally, the tube voltage drop of the blue LED is about 2.8V-3V generally, in order to make the LED with high tube voltage drop work normally, the power voltage must be selected based on the blue LED with high tube voltage drop, which is higher than the red LED with low tube voltage drop, in order to make the low-tube-voltage-drop red LED work normally at such a higher voltage, the voltage higher than the voltage required for the normal operation of the red LED is distributed to the red power driving circuit, this results in increased power consumption of the red power driver circuit, increased temperature rise, and reduced power utilization. All red LEDs of the circuit are connected in series on a branch circuit (the green LEDs and the blue LEDs are also the same), so that at the same time, the currents of all the red LEDs are the same (the green LEDs and the blue LEDs are also the same), the luminous intensity of the LEDs is in direct proportion to the current flowing through the LEDs (under the condition of not being larger than the maximum current of the LEDs), according to the color mixing principle, the T12 lamp tube manufactured by adopting the circuit principle can only mix light of one color in the whole lamp tube at the same time, therefore, the T12 lamp tube adopting the circuit can only make a simple color effect, the power consumption of a power driving circuit is increased, and the temperature rise is improved.
Disclosure of Invention
The invention provides a circuit for alternately controlling LED lamp beads, which aims to reduce the power consumption of a low-voltage-drop LED driving circuit, reduce the temperature rise and improve the utilization rate of a power supply and simultaneously achieve a colorful color effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a circuit for alternately controlling LED lamp beads comprises an LED lamp tube, a single-chip microcomputer control circuit and an LED power supply control circuit, wherein the LED power supply control circuit comprises a blue LED power supply control circuit, a red LED power supply control circuit, a green LED power supply control circuit, a yellow LED power supply control circuit and a white LED power supply control circuit; the blue LED power supply control circuit is used for providing working voltage for a blue LED of the LED lamp tube; the red LED power supply control circuit is used for providing working voltage for a red LED of the LED lamp tube; the green LED power supply control circuit is used for providing working voltage for a red LED of the LED lamp tube; the yellow LED power supply control circuit is used for providing working voltage for a yellow LED of the LED lamp tube; the white LED power supply control circuit is used for providing working voltage for a white LED of the LED lamp tube; and the single chip microcomputer control circuit is connected with the LED lamp tubes corresponding to the constant current LED drivers one to one.
Further, the blue LED power supply control circuit comprises a power supply controller U1, an inductor L11, a capacitor C1A, a capacitor C1B and a capacitor C17; an external power supply is input into the power supply controller U1, and the power supply controller U1 provides 21.8V of working voltage to the blue LED of the LED tube through the inductor L11, the capacitor C1A, the capacitor C1B and the capacitor C17.
Further, the red LED power control circuit comprises a power controller U2, an inductor L21, a capacitor C2A, a capacitor C2B and a capacitor C27; an external power supply is input into the power supply controller U2, and the power supply controller U2 provides 23.8V of working voltage to the red LED of the LED tube through the inductor L21, the capacitor C2A, the capacitor C2B and the capacitor C27.
Further, the green LED power control circuit comprises a power controller U3, an inductor L31, a capacitor C3A, a capacitor C3B and a capacitor C37; an external power supply is input into the power supply controller U3, and the power supply controller U3 provides 19.7V working voltage for the green LED of the LED lamp tube through the inductor L31, the capacitor C3A, the capacitor C3B and the capacitor C37.
Further, the yellow LED power supply control circuit comprises a power supply controller U4, an inductor L41, a capacitor C4A, a capacitor C4B and a capacitor C47; an external power supply is input into the power supply controller U4, and the power supply controller U4 provides 17.2V of working voltage to the yellow LED of the LED tube through the inductor L41, the capacitor C4A, the capacitor C4B and the capacitor C47.
Further, the white LED power control circuit comprises a power controller U5, an inductor L51, a capacitor C5A, a capacitor C5B and a capacitor C57; an external power supply is input into the power supply controller U5, and the power supply controller U5 provides 15.8V of working voltage to the white LED of the LED tube through the inductor L51, the capacitor C5A, the capacitor C5B and the capacitor C57.
Further, the constant current LED driver adopts an MBI5030GTS device.
Furthermore, the number of the LED lamp tubes is 3, the number of the constant current LED drivers is 3, the LED lamp tubes are connected with the constant current LED drivers in a one-to-one correspondence mode, and the adjacent constant current LED drivers are connected in series through a resistor of 22 omega.
Further, the power controller U1 adopts an RT7272B device.
According to the invention, the independent LED power supply control circuit is adopted to provide the working voltage for the LED lamp tube, so that unnecessary energy loss is reduced to the maximum extent, the power consumption of the constant current LED driver is reduced, and meanwhile, the temperature rise of the constant current LED driver is also reduced. Meanwhile, the constant-current LED driver is adopted to independently control the LED lamp tube, and the color development capability and the color development effect of the T12 lamp are greatly enriched on the premise of not increasing the number of the LED lamp tubes.
Drawings
FIG. 1: a control circuit schematic block diagram of the prior T12 lamp tube.
FIG. 2: the circuit of the invention is a schematic block diagram.
FIG. 3: a circuit schematic diagram of the singlechip.
FIG. 4: schematic diagram of a blue LED power control circuit.
FIG. 5: schematic diagram of a red LED power control circuit.
FIG. 6: schematic diagram of green LED power control circuit.
FIG. 7: and a circuit schematic diagram of the constant current LED driver U21 connected with the constant current LED driver U41.
FIG. 8: and a circuit schematic diagram of the constant current LED driver U41 connected with the constant current LED driver U61.
FIG. 9: and a circuit schematic diagram of the constant current LED driver U61 connected with the constant current LED driver U81.
FIG. 10: and a circuit schematic diagram of the constant current LED driver U81 connected with the constant current LED driver UA 1.
FIG. 11: the constant current LED drivers are connected with each other schematically.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 2-4, a circuit for alternately controlling LED lamp beads includes 4 LED lamp tubes, a single-chip microcomputer control circuit MUC, and an LED power control circuit (i.e., a power supply), where the 4 LED lamp tubes are a first LED lamp tube, a second LED lamp tube, a third LED lamp tube, and a fourth LED lamp tube, respectively; and the constant current LED driver U21 is correspondingly connected with the first LED lamp tube, the constant current LED driver U41 is correspondingly connected with the second LED lamp tube, the constant current LED driver U61 is correspondingly connected with the third LED lamp tube, and the constant current LED driver U81 is correspondingly connected with the fourth LED lamp tube.
The LED power control circuit comprises a blue LED power control circuit, a red LED power control circuit, a green LED power control circuit, a yellow LED power control circuit and a white LED power control circuit.
As shown in fig. 4, the blue LED power control circuit mainly includes a power controller U1, an inductor L11, a capacitor C1A, a capacitor C1B, a capacitor C17, and its auxiliary circuits. After an external power supply is input into the power supply controller U1, the power supply controller U1 provides 21.8V working voltage to the blue LEDs of the first LED lamp tube, the second LED lamp tube, the third LED lamp tube and the fourth LED lamp tube through the inductor L11, the capacitor C1A, the capacitor C1B and the capacitor C17, respectively, the inductor L11 mainly functions as a filter, and the capacitor C1A, the capacitor C1B and the capacitor C17 also have a filtering function besides an energy storage function.
As shown in fig. 5, the red LED power control circuit mainly includes a power controller U2, an inductor L21, a capacitor C2A, a capacitor C2B, a capacitor C27 and its auxiliary circuits; after an external power supply is input into the power supply controller U2, the power supply controller U2 provides 23.8V of operating voltage to the red LEDs of the first LED lamp tube, the second LED lamp tube, the third LED lamp tube and the fourth LED lamp tube through the inductor L21, the capacitor C2A, the capacitor C2B and the capacitor C27, respectively. The inductor L21 mainly functions as a filter, and the capacitor C2A, the capacitor C2B and the capacitor C27 also have a filtering function in addition to an energy storage function.
As shown in fig. 6, the green LED power control circuit includes a power controller U3, an inductor L31, a capacitor C3A, a capacitor C3B, a capacitor C37 and its auxiliary circuits; after an external power supply is input into the power supply controller U3, the power supply controller U3 provides 19.7V working voltage to the green LEDs of the first LED lamp tube, the second LED lamp tube, the third LED lamp tube and the fourth LED lamp tube through the inductor L31, the capacitor C3A, the capacitor C3B and the capacitor C37, respectively. The inductor L31 mainly functions as a filter, and the capacitor C3A, the capacitor C3B and the capacitor C37 also have a filtering function in addition to an energy storage function.
As shown in fig. 7, the yellow LED power control circuit includes a power controller U4, an inductor L41, a capacitor C4A, a capacitor C4B, a capacitor C47 and its auxiliary circuits; after an external power supply is input into the power supply controller U4, the power supply controller U4 provides 17.2V of operating voltage to the yellow LEDs of the first LED lamp tube, the second LED lamp tube, the third LED lamp tube and the fourth LED lamp tube through the inductor L41, the capacitor C4A, the capacitor C4B and the capacitor C47, respectively. The inductor L41 mainly functions as a filter, and the capacitor C4A, the capacitor C4B and the capacitor C47 also have a filtering function in addition to an energy storage function.
As shown in fig. 8, the white LED power control circuit includes a power controller U5, an inductor L51, a capacitor C5A, a capacitor C5B, a capacitor C57 and its auxiliary circuits; after an external power supply is input into the power supply controller U4, the power supply controller U5 provides 15.8V of working voltage to the white LEDs of the first LED tube, the second LED tube, the third LED tube and the fourth LED tube through the inductor L51, the capacitor C5A, the capacitor C5B and the capacitor C57, respectively. The inductor L51 mainly functions as a filter, and the capacitor C5A, the capacitor C5B and the capacitor C57 also have a filtering function in addition to an energy storage function.
As shown in fig. 3 and 7, the single chip microcomputer control circuit U6 is connected to the first LED tube through the constant current LED driver U21, and is configured to provide constant current sources of its blue LED, green LED, red LED, yellow LED and white LED to the first LED tube, where the specific connection relationship is:
a pin 29 of the single chip microcomputer control circuit U6 is connected with a pin 21 of the constant current LED driver U21, a pin 30 of the single chip microcomputer control circuit U6 is connected with a pin 4 of the constant current LED driver U21, a pin 31 of the single chip microcomputer control circuit U6 is connected with a pin 3 of the constant current LED driver U21, and a pin 32 of the single chip microcomputer control circuit U6 is connected with a pin 2 of the constant current LED driver U21, so that the control of the constant current LED driver U21 by the single chip microcomputer control circuit U6 is achieved.
The constant current source is provided for the green LED of the first LED lamp tube after the pins 8, 9 and 10 of the constant current LED driver U21 are connected in parallel with the resistor R26, the resistor R27 and the resistor R28. The pins 14, 15 and 16 of the constant current LED driver U21 are connected in parallel with the resistor R32, the resistor R33 and the resistor R34 to realize the constant current source supply to the red LED of the first LED lamp tube. The pins 5, 6 and 7 of the constant current LED driver U21 are connected in parallel with the resistor R23, the resistor R24 and the resistor R25 to realize the supply of a constant current source to the blue LED of the first LED lamp tube. The pins 17, 18 and 19 of the constant current LED driver U21 are connected in parallel with the resistor R35, the resistor R36 and the resistor R37 to realize the purpose of providing a constant current source for the yellow LED of the first LED lamp tube. The pins 11, 12 and 13 of the constant current LED driver U21 are connected in parallel with the resistor R29, the resistor R30 and the resistor R31 to realize the supply of a constant current source to the white LED of the first LED lamp tube.
As shown in fig. 3 and 8, the single chip microcomputer control circuit U6 is connected to the second LED tube through the constant current LED driver U41, and is configured to provide constant current sources of its blue LED, green LED, red LED, yellow LED and white LED to the second LED tube, where the specific connection relationship is:
the pin 29 of the single chip microcomputer control circuit U6 is connected with the pin 21 of the constant current LED driver U41, the pin 30 of the single chip microcomputer control circuit U6 is connected with the pin 4 of the constant current LED driver U41, and the pin 31 of the single chip microcomputer control circuit U6 is connected with the pin 3 of the constant current LED driver U41, so that the control of the constant current LED driver U41 by the single chip microcomputer control circuit U6 is achieved.
The pins 8, 9 and 10 of the constant current LED driver U41 are connected in parallel with the resistor R46, the resistor R47 and the resistor R48 to realize the constant current source supply to the green LED of the second LED lamp tube. The pins 14, 15 and 16 of the constant current LED driver U41 are connected in parallel with the resistor R52, the resistor R53 and the resistor R54 to realize the supply of a constant current source to the red LED of the second LED lamp tube. The pins 5, 6 and 7 of the constant current LED driver U41 are connected in parallel with the resistor R43, the resistor R44 and the resistor R45 to realize the supply of a constant current source to the blue LED of the second LED lamp tube. The pins 17, 18 and 19 of the constant current LED driver U41 are connected in parallel with the resistor R55, the resistor R56 and the resistor R57 to realize the purpose of providing a constant current source for the yellow LED of the second LED lamp tube. The pins 11, 12 and 13 of the constant current LED driver U41 are connected in parallel with the resistor R49, the resistor R50 and the resistor R51 to realize the supply of a constant current source to the white LED of the second LED lamp tube.
As shown in fig. 3 and 9, the single chip microcomputer control circuit U6 is connected to the third LED tube through the constant current LED driver U61, and is configured to provide constant current sources of the blue LED, the green LED, the red LED, the yellow LED and the white LED to the third LED tube, where the specific connection relationship is:
the pin 29 of the single chip microcomputer control circuit U6 is connected with the pin 21 of the constant current LED driver U61, the pin 30 of the single chip microcomputer control circuit U6 is connected with the pin 4 of the constant current LED driver U61, and the pin 31 of the single chip microcomputer control circuit U6 is connected with the pin 3 of the constant current LED driver U61, so that the control of the constant current LED driver U61 by the single chip microcomputer control circuit U6 is achieved. The pins 8, 9 and 10 of the constant current LED driver U61 are connected in parallel with the resistor R66, the resistor R67 and the resistor R68 to realize the constant current source supply to the green LED of the third LED lamp tube. The pins 14, 15 and 16 of the constant current LED driver U61 are connected in parallel with the resistor R72, the resistor R73 and the resistor R74 to realize the supply of a constant current source to the red LED of the third LED lamp tube. The pins 5, 6 and 7 of the constant current LED driver U61 are connected in parallel with the resistor R63, the resistor R64 and the resistor R65 to realize the supply of a constant current source to the blue LED of the third LED lamp tube. Pins 17, 18 and 19 of the constant current LED driver U61 are connected in parallel with the resistor R75, the resistor R76 and the resistor R77 to realize the supply of a constant current source to the yellow LED of the third LED lamp tube. The pins 11, 12 and 13 of the constant current LED driver U61 are connected in parallel with the resistor R69, the resistor R70 and the resistor R71 to realize the supply of a constant current source to the white LED of the third LED lamp tube.
As shown in fig. 3 and 10, the single chip microcomputer control circuit U6 is connected to the four LED lamp via the constant current LED driver U81, and is configured to provide constant current sources of blue LED, green LED, red LED, yellow LED and white LED to the fourth LED lamp, where the specific connection relationship is:
the pin 29 of the single chip microcomputer control circuit U6 is connected with the pin 21 of the constant current LED driver U81, the pin 30 of the single chip microcomputer control circuit U6 is connected with the pin 4 of the constant current LED driver U81, and the pin 31 of the single chip microcomputer control circuit U6 is connected with the pin 3 of the constant current LED driver U81, so that the control of the constant current LED driver U81 by the single chip microcomputer control circuit U6 is achieved. The pins 8, 9 and 10 of the constant current LED driver U81 are connected in parallel with the resistor R86, the resistor R87 and the resistor R88 to realize the constant current source supply to the green LED of the fourth LED lamp tube. The pins 14, 15 and 16 of the constant current LED driver U81 are connected in parallel with the resistor R92, the resistor R93 and the resistor R94 to realize the supply of a constant current source to the red LED of the fourth LED lamp tube. The pins 5, 6 and 7 of the constant current LED driver U81 are connected in parallel with the resistor R83, the resistor R84 and the resistor R85 to realize the supply of a constant current source to the blue LED of the fourth LED lamp tube. Pins 17, 18 and 19 of the constant current LED driver U81 are connected in parallel with the resistor R95, the resistor R96 and the resistor R97 to realize the purpose of providing a constant current source for the yellow LED of the fourth LED lamp tube. The pins 11, 12 and 13 of the constant current LED driver U81 are connected in parallel with the resistor R89, the resistor R90 and the resistor R91 to realize the supply of a constant current source to the white LED of the fourth LED lamp tube.
As shown in fig. 11, a pin 22 of the constant current LED driver U21 is connected to a pin 2 of the constant current LED driver U41 through a resistor R22, a pin 22 of the constant current LED driver U41 is connected to a pin 2 of the constant current LED driver U61 through a resistor R42, and a pin 22 of the constant current LED driver U61 is connected to a pin 2 of the constant current LED driver U81 through a resistor R62, so that the constant current LED driver U21 receives and sequentially transmits signals after the single chip microcomputer control circuit U6 sends an SDI signal to the constant current LED driver U21. The resistances of the resistor R22, the resistor R42, and the resistor R62 are 22 Ω.
The constant current LED driver U21, the constant current LED driver U41, the constant current LED driver U61 and the constant current LED driver U81 all adopt MBI5030GTS devices. The power controller U1, the power controller U2, the power controller U3, the power controller U4 and the power controller U5 all adopt RT7272B devices.
Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.
Claims (9)
1. The utility model provides a circuit of alternative control LED lamp pearl, includes LED fluorescent tube, single chip microcomputer control circuit, its characterized in that:
the LED power supply control circuit comprises a blue LED power supply control circuit, a red LED power supply control circuit, a green LED power supply control circuit, a yellow LED power supply control circuit and a white LED power supply control circuit;
the blue LED power supply control circuit is used for providing working voltage for a blue LED of the LED lamp tube;
the red LED power supply control circuit is used for providing working voltage for a red LED of the LED lamp tube;
the green LED power supply control circuit is used for providing working voltage for a red LED of the LED lamp tube;
the yellow LED power supply control circuit is used for providing working voltage for a yellow LED of the LED lamp tube;
the white LED power supply control circuit is used for providing working voltage for a white LED of the LED lamp tube;
and the single chip microcomputer control circuit is connected with the LED lamp tubes corresponding to the constant current LED drivers one to one.
2. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the blue LED power control circuit comprises a power controller U1, an inductor L11, a capacitor C1A, a capacitor C1B and a capacitor C17; an external power supply is input into the power supply controller U1, and the power supply controller U1 provides 21.8V of working voltage to the blue LED of the LED tube through the inductor L11, the capacitor C1A, the capacitor C1B and the capacitor C17.
3. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the red LED power control circuit comprises a power controller U2, an inductor L21, a capacitor C2A, a capacitor C2B and a capacitor C27; an external power supply is input into the power supply controller U2, and the power supply controller U2 provides 23.8V of working voltage to the red LED of the LED tube through the inductor L21, the capacitor C2A, the capacitor C2B and the capacitor C27.
4. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the green LED power control circuit comprises a power controller U3, an inductor L31, a capacitor C3A, a capacitor C3B and a capacitor C37; an external power supply is input into the power supply controller U3, and the power supply controller U3 provides 19.7V working voltage for the green LED of the LED lamp tube through the inductor L31, the capacitor C3A, the capacitor C3B and the capacitor C37.
5. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the yellow LED power control circuit comprises a power controller U4, an inductor L41, a capacitor C4A, a capacitor C4B and a capacitor C47; an external power supply is input into the power supply controller U4, and the power supply controller U4 provides 17.2V of working voltage to the yellow LED of the LED tube through the inductor L41, the capacitor C4A, the capacitor C4B and the capacitor C47.
6. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the white LED power control circuit comprises a power controller U5, an inductor L51, a capacitor C5A, a capacitor C5B and a capacitor C57; an external power supply is input into the power supply controller U5, and the power supply controller U5 provides 15.8V of working voltage to the white LED of the LED tube through the inductor L51, the capacitor C5A, the capacitor C5B and the capacitor C57.
7. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the constant current LED driver adopts an MBI5030GTS device.
8. The circuit of claim 1, wherein the circuit for alternately controlling the LED lamp beads comprises: the LED lamp tubes are 3, the constant current LED drivers are 3, the LED lamp tubes are connected with the constant current LED drivers in a one-to-one correspondence mode, and the constant current LED drivers are connected in series through 22 omega resistors.
9. The circuit of claim 3, wherein the LED lamp bead is controlled alternatively: the power controller U1 adopts an RT7272B device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418385.6A CN111970798A (en) | 2019-05-20 | 2019-05-20 | Circuit for alternately controlling LED lamp beads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418385.6A CN111970798A (en) | 2019-05-20 | 2019-05-20 | Circuit for alternately controlling LED lamp beads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111970798A true CN111970798A (en) | 2020-11-20 |
Family
ID=73358233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910418385.6A Pending CN111970798A (en) | 2019-05-20 | 2019-05-20 | Circuit for alternately controlling LED lamp beads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111970798A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840657A (en) * | 2009-03-20 | 2010-09-22 | 上海金陵时威科技发展股份有限公司 | LED electronic display screen system |
| US20140217909A1 (en) * | 2013-02-02 | 2014-08-07 | Vastview Technology Inc. | Apparatus for driving multi-color led strings |
| CN204204380U (en) * | 2014-11-22 | 2015-03-11 | 重庆电讯职业学院 | A kind of multicolored LED antenna array control display system |
-
2019
- 2019-05-20 CN CN201910418385.6A patent/CN111970798A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840657A (en) * | 2009-03-20 | 2010-09-22 | 上海金陵时威科技发展股份有限公司 | LED electronic display screen system |
| US20140217909A1 (en) * | 2013-02-02 | 2014-08-07 | Vastview Technology Inc. | Apparatus for driving multi-color led strings |
| CN204204380U (en) * | 2014-11-22 | 2015-03-11 | 重庆电讯职业学院 | A kind of multicolored LED antenna array control display system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105554965B (en) | A kind of the bus current complementary output of time-sharing multiplex multiple constant current LED driver and its control method | |
| CN102144508A (en) | Control system for LEDs applied to plant illumination | |
| CN104768280B (en) | Color temperature compensation method for LED lamp | |
| CN107493622A (en) | Matrix LED driving control system and control method for automobile lamp | |
| CN207911083U (en) | A kind of LED light group device that can smoothly dim color-temperature regulating | |
| CN104936361B (en) | A kind of totally digitilized LED illumination light source driving control system and technical scheme | |
| CN111970798A (en) | Circuit for alternately controlling LED lamp beads | |
| CN214507416U (en) | Red, green, blue, white and yellow RGBWY multicolor temperature full-spectrum LED intelligent lamp | |
| KR20180055483A (en) | Apparatus for controlling led type turn signal lamp and method thereof | |
| CN214381482U (en) | Intelligent portable eye-protecting illumination desk lamp | |
| US11956871B2 (en) | Colored light apparatus based on signal edges from power supply line | |
| CN201054839Y (en) | A LED lamp cascading drive and control circuit | |
| CN111970787A (en) | Circuit for supplying power and reducing loss for LEDs with various colors | |
| WO2022151941A1 (en) | Colored lamp apparatus triggered by multi-code mixed power line edge signals | |
| CN111683431A (en) | Intelligent portable eye protection lighting circuit | |
| CN209787521U (en) | stage theater is with T12 dimmer lamp | |
| CN210641110U (en) | Double-color LED drive circuit based on bridge unit and LED lighting device | |
| CN208369920U (en) | Mix the realization device of the multichannel illumination pathways adjusted | |
| CN113630929A (en) | Dimming and color mixing control circuit and LED lighting device | |
| CN207969012U (en) | Led lamp drive control circuit | |
| CN210183593U (en) | LED projection lamp driving circuit | |
| CN208317061U (en) | The signal light electric installation of multi signal function | |
| CN206759766U (en) | Dim the LED drive circuit of toning | |
| CN219248114U (en) | Multifunctional single-double-color warning lamp circuit | |
| WO2018023998A1 (en) | Single-port led module with adjustable colour and temperature, and colour and temperature adjustment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201120 |
|
| RJ01 | Rejection of invention patent application after publication |