CN212183780U - Drive circuit and lamp - Google Patents
Drive circuit and lamp Download PDFInfo
- Publication number
- CN212183780U CN212183780U CN202021010132.XU CN202021010132U CN212183780U CN 212183780 U CN212183780 U CN 212183780U CN 202021010132 U CN202021010132 U CN 202021010132U CN 212183780 U CN212183780 U CN 212183780U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- driving
- drive
- voltage
- 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.)
- Active
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The application discloses drive circuit and lamps and lanterns. The driving circuit includes a controller for generating a control signal; the signal input end of the driving chip is connected with the signal output end of the controller and used for receiving and decoding the control signal and outputting a corresponding pulse width modulation signal; and the input end of the drive control circuit is connected with the drive signal output end of the drive chip, the output end of the drive control circuit is connected with the light-emitting element, and the drive control circuit is used for generating a voltage pulse signal according to the pulse width modulation signal so as to drive the light-emitting element to work. The driving circuit can be used for generating 24V dimming signals, has few components, high integration level and low preparation cost, and is favorable for commercialization and application to various illumination and brightening decorative scenes.
Description
Technical Field
The utility model relates to the field of photoelectric technology, especially, relate to a drive circuit and lamps and lanterns.
Background
The light emitting diode is widely applied to the fields of illumination and brightening decoration engineering, the illumination fields comprise household illumination, fine counter illumination, street lamp illumination, landscape illumination and the like, and the brightening decoration fields comprise building brightening, bridge decoration, landscape decoration, stage lighting, advertising signboards and the like. The light emitting diodes are divided according to different driving modes, and mainly include constant voltage driving and constant current driving, and specifically, the light emitting elements can be driven to work by Pulse Width Modulation (PWM).
The pulse width modulation technology is to control the on-off of the switch device of the inverter circuit to make the output end obtain a series of pulses with equal amplitude, and the pulses are used to replace sine waves or required waveforms. The conventional PWM signal is generated in two ways: 1. the signal generator is used for generating triangular waves or sawtooth waves, and PWM signals can be generated through the comparator, but the method is low in integration level and not beneficial to commercialization; 2. the PWM signal is generated by programming a singlechip and a programmable logic device, but the method has more required components and more complex circuits and is not beneficial to commercialization.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an improved driving circuit for solving the problems of multiple components, complex structure and low integration level of the conventional PWM dimming signal generation circuit.
A drive circuit, comprising: a controller for generating a control signal; the signal input end of the driving chip is connected with the signal output end of the controller and is used for receiving and decoding the control signal and outputting a corresponding pulse width modulation signal; and the input end of the drive control circuit is connected with the drive signal output end of the drive chip, the output end of the drive control circuit is connected with the light-emitting element, and the drive control circuit is used for generating a voltage pulse signal according to the pulse width modulation signal so as to drive the light-emitting element to work.
The driving circuit can output a pulse width modulation signal according to the control signal generated by the controller through the driving chip, and enables the driving control circuit to generate a voltage pulse signal under the control of the pulse width modulation signal so as to drive the light-emitting element to work. The driving circuit has the advantages of few components, simple structure and high integration level, and is favorable for being applied to various lighting and brightening decorative scenes.
In one embodiment, the driving chip includes a plurality of driving signal output terminals, and each of the driving signal output terminals is connected to one of the driving control circuits.
In one embodiment, the signal input terminals of the driver chip are differential signal input terminals, and the differential signal input terminals include a first differential signal input terminal and a second differential signal input terminal.
In one embodiment, the driving circuit further includes:
the first voltage stabilizing circuit is connected with the first differential signal input end and is used for stabilizing the signal of the first differential signal input end within a preset range;
and the second voltage stabilizing circuit is connected with the second differential signal input end and is used for stabilizing the signal of the second differential signal input end within a preset range.
In one embodiment, the driving chip is an SM165 series chip.
In one embodiment, the drive control circuit includes:
the first end of the switch tube is connected with the first power supply and the output end of the drive control circuit, the second end of the switch tube is grounded, and the control end of the switch tube is connected with the input end of the drive control circuit.
In one embodiment, the driving control circuit further includes: and the voltage output end of the voltage providing circuit is connected with the control end of the switch tube and is used for providing breakover voltage for the switch tube.
In one embodiment, the voltage supply circuit includes:
one end of the first resistor is connected with a second power supply;
and one end of the second resistor is connected with the other end of the first resistor and the output end of the voltage supply circuit, and the other end of the second resistor is grounded.
In one embodiment, the driving chip adjusts the duty ratio of the pulse width modulation signal according to the control signal to adjust the average brightness of the light emitting element.
The application also provides a lamp.
A luminaire comprising a drive circuit as described above.
The lamp can better realize illumination or building lighting engineering according to source data, and the driving circuit of the light-emitting element in the lamp is simple in structure and high in integration level, so that the preparation cost of the lamp can be effectively reduced, and the market competitiveness of the lamp is improved.
Drawings
FIG. 1 is a schematic diagram of a driving circuit according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a driving chip according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a regulated protection circuit according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a driving circuit according to another embodiment of the present application;
fig. 5 is a schematic diagram of a driving control circuit according to another embodiment of the present application.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," "circumferential," and the like are based on the orientation or positional relationship shown in the drawings and are intended to facilitate the description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
With the progress of scientific technology and the improvement of design level, the industry has made higher demands and expectations on the control effect of the light. The special effect of the light can not be communicated and driven, so-called Light Emitting Diode (LED) driving circuit comprises a driving chip applied to the LED or an electronic device with the same function, and the main mechanism is that the specific effects of controlling the light emitting and the brightness adjustment of the LED and the like are achieved by controlling the voltage at two ends of the LED. The constant-voltage driving circuit of the single-channel or multi-channel light-emitting diode is designed to meet the driving requirement of mainstream, and can be applied to the brightening and decorating fields of dot matrix screens, decorative light bars, advertising modules, landscape lighting and the like developed by the light-emitting diode, particularly the fields of building brightening, landscape decoration, stage lighting and display signboards and the like.
The DMX512 protocol is a digital multiplexing protocol established by the american theater technical association, and is originally designed to be compatible with a plurality of dimmers and controllers used in a stage, a theater, and the like, and at present, most dimming systems adopt a communication scheme based on the DMX512 protocol to realize remote communication operation of lamps. Although the DMX512 protocol is not an industry or national standard for the time being, due to its simplicity and practicality, since the protocol was brought out, it was generally accepted by the relevant manufacturers and users as a de facto standard, and similarly, the ethernet stage light controller has the standard Art-Net, etc. compatible with the single wire communication of the present application.
Referring to fig. 1, the present application provides a driving circuit, which has few components, a simple structure and a high integration level, and is beneficial to reducing the manufacturing cost of an LED lamp, so that the LED lamp has higher competitiveness. Specifically, the driving circuit includes a controller, a driving chip and a driving control circuit connected in sequence, and the light emitting element (such as a light emitting diode) is connected to an output terminal of the driving control circuit.
And the controller is positioned at the front end of the driving circuit and is used for generating the DMX signal. The DMX signals are transmitted through differential signals to enhance the anti-interference capability and the transmission distance of the DMX signals. Wherein, a DMX512 data packet includes a start code and 512 data frames, and the data frames include 1 start bit (low level), 8 data bits and 2 stop bits (high level); one data frame represents dimming data of one channel, and theoretically 512 control channels can be supported. Specifically, in the dimming system, each frame of data represents a dimming brightness value of one channel, and the 8-bit data frame can be set to have 0-255 gradients, which represent 0-100% of a gray scale value.
And the signal input end of the driving chip is connected with the signal output end of the controller and is used for receiving and decoding the control signal and outputting a corresponding Pulse Width Modulation (PWM) signal. Specifically, the driving chip is compatible with and extends the DMX512 protocol, and has a differential data input port, an address write-in port, and a driving signal output port, and a data decoding module and a data buffer are integrated in the driving chip to decode the received control signal, so as to output a PWM signal from the driving signal output port of the driving chip.
And the input end of the drive control circuit is connected with the drive signal output end of the drive chip, the output end of the drive control circuit is connected with the light-emitting element, and the drive control circuit is used for generating a voltage pulse signal according to the PWM signal so as to drive the light-emitting element to work. Specifically, a light emitting element can contain a plurality of pixel points, and each pixel point can occupy a plurality of color channels, and simultaneously each pixel point can occupy one or more lamp beads in the light emitting element.
When a plurality of driving chips are cascaded with each other, each driving chip needs to indicate the light-emitting gray scale of its own light-emitting element through the control signal received by the driving chip, and theoretically, any static or dynamic pattern can be displayed through the driving chip and the light-emitting element as long as the driving chips are enough. Meanwhile, when any one driver chip extracts the required data from the control signal, the control signal must be continuously transmitted to other subsequent driver chips, that is, the driver chip has a data forwarding function, and all driver chips can completely display the expected pattern in a pixel point mode when the control signal is extracted. In addition, the driving chip receives and transmits the control signal according to a preset communication protocol rule (namely, DMX512 protocol) in the process of executing the communication task, and when the driving chip receives the control signal which is not in accordance with the specification, the driving chip can directly drive the matched light-emitting element to be turned off (namely, turned off) and does not display any content, so that the display disorder is avoided.
The driving circuit can output the PWM signal according to the control signal generated by the controller through the driving chip, and enables the driving control circuit to generate the voltage pulse signal under the control of the pulse width modulation signal so as to drive the light-emitting element to work. Specifically, when the light emitting element is a light emitting diode, the dimming signal is usually a voltage pulse signal of 24V. The driving circuit has the advantages of few components, simple structure and high integration level, and is favorable for being applied to various lighting and brightening decorative scenes.
In an exemplary embodiment, as shown in fig. 2, the driving chip includes a plurality of driving signal output terminals (OUT/R/G/B/W), and one driving control circuit is connected to each of the driving signal output terminals. For example, one driving chip may include three color channels of red (R), green (G), and blue (B), and may further include a white (W) channel. The driving chip captures and decodes a designated signal corresponding to the driving chip from the control signal, and generates a first path of PWMR signal based on duty ratio information carried by the designated signal and aiming at a red channel so as to enable a corresponding driving control circuit to drive a red light-emitting element to emit light; similarly, the driving chip also generates a second path of PWMG signals based on the duty ratio information carried by the specified signals and aiming at the green channel so as to enable the corresponding driving control circuit to drive the green light-emitting element to emit light; similarly, the driving chip also generates a third PWMB signal based on the duty ratio information carried by the specified signal and aiming at the blue color channel so as to enable the corresponding driving control circuit to drive the blue light-emitting element to emit light. Optionally, the driving chip further generates a fourth PWMW signal based on the duty ratio information carried by the specific signal and for the white channel, so that the corresponding driving control circuit drives the white light emitting element to emit light.
In an exemplary embodiment, with continued reference to fig. 2, the signal inputs of the driver chip are differential signal inputs including a first differential signal input (a) and a second differential signal input (B). The driving chip is in differential transmission through two wires, so that the anti-interference capability of signals is enhanced, and the transmission distance is increased.
Further, referring to fig. 3, the driving circuit further includes a first voltage stabilizing circuit, where the first voltage stabilizing circuit is connected to the first differential signal input end, and is configured to stabilize a signal at the first differential signal input end within a preset range; and the second voltage stabilizing circuit is connected with the second differential signal input end and is used for stabilizing the signal of the second differential signal input end within a preset range. The first voltage stabilizing circuit adopts two Zener diodes T1 which are connected in series in a forward and reverse direction and is connected in series with a fuse, the second voltage stabilizing circuit adopts two Zener diodes T2 which are connected in series in a forward and reverse direction and is connected in series with a fuse, voltage clamping of the first differential signal input end and the second differential signal input end is achieved, and meanwhile circuit overload is prevented.
In an exemplary embodiment, the driving chip may employ SM165 series chips, such as an SM16511 chip, an SM16512 chip, and an SM16522 chip. The present application takes an SM16512 chip as an example for explanation. Referring to fig. 2, the A, B port of the SM16512 chip is a differential signal input end respectively connected to the signal output end of the controller; the OUT/R/G/B/W ports respectively represent PWM driving signal output ports of the chip, wherein the OUTW port is a selective connection port; the REXT port is an external resistor connecting port and is used for adjusting the output current of the OUT/R/G/B/W end; the PORT PORT is a channel selection PORT, when the output signal is '1' (default), the multi-channel is independently output, and when the output signal is '0', the multi-channel is consistently output; the SPWM is a polarity selection port, when an output signal of the SPWM is '1', the multi-channel is normally output, when the output signal of the SPWM is '0' (for example, when a pin is grounded), the multi-channel outputs in opposite phase, the output frequency of each channel port is 800Hz, and the SPWM can be externally connected with a large-current switching tube; VDD is a power supply end; ADRI is an address input port and is connected with an output port of a previous adapter; the ADRO is an address output port and is connected with the input port of the next adapter, so that long-distance light emitting control is realized, and remote equipment management feedback is realized; the DAO is a data output line and is used for outputting cascade signals; GND is the chip ground, i.e., the ground terminal of the chip. The SM165 series chips can simultaneously realize signal differential transmission, PWM signal generation and three-channel or four-channel light emitting control, have high integration level and are beneficial to the productization of a driving circuit.
In other embodiments, referring to fig. 2 and 3, the address input port ADRI and the address output port ADRO of the chip are both provided with a voltage regulator circuit, so that the input address signal is stable and accurate, and an address chip selection error is prevented, thereby facilitating the implementation of the cascade control of the plurality of light emitting elements. The voltage regulator circuit is the same as the above-mentioned voltage regulator circuit, and thus the description thereof is omitted.
In an exemplary embodiment, referring to fig. 4, the driving control circuit includes a switching tube, a first end of the switching tube is connected to the first power supply and the output end of the driving control circuit, a second end of the switching tube is grounded, and a control end of the switching tube is connected to the input end of the driving control circuit. The specific switching tube can be a MOS tube or a triode. When the switching tube is the MOS tube, because the MOS tube needs to be started fast, therefore often adopt specific drive circuit when the drive, satisfy quick drive nature like half-bridge drive circuit, can provide the voltage when switching circuit switches on, cuts off simultaneously again.
In another embodiment, when the switch tube is a triode (such as NPN type), a collector of the triode is connected to the output terminal of the first power supply and the driving control circuit, an emitter of the triode is grounded, and a base of the triode is connected to the input terminal of the driving control circuit as the control terminal of the switch tube. Thus, when the PWM signal input by the input end of the drive control circuit is 0, the base voltage of the triode is at a low level, the triode is cut off, and the output end of the drive control circuit outputs a first power supply voltage; when the PWM signal input from the input terminal of the driving control circuit is 1, the base voltage of the transistor is high level, the transistor works in saturation state, at this time, the transistor is turned on, and the output voltage of the output terminal of the driving control circuit approaches 0V.
Further, referring to fig. 5, the driving control circuit further includes a voltage providing circuit, and a voltage output end of the voltage providing circuit is connected to the control end of the switching tube for providing a conducting voltage for the switching tube. For example, when the PWM signal input to the input terminal of the driving control circuit is 1, a predetermined voltage may be provided to the base of the transistor, so that the base current and the collector current of the transistor satisfy β IB＞ICAnd the triode works in a saturation state, and the triode is conducted at the moment.
Specifically, with reference to fig. 5, the driving control circuit has three driving control circuits, which are respectively used for controlling the red diode, the green diode and the blue diode, and the switching tubes corresponding to the red diode, the green diode and the blue diode are all triodes (respectively denoted by Q1, Q2 and Q3). Taking the transistor Q1 (transistor 9013) as an example, the voltage supply circuit includes a first resistor RH1, one end of the first resistor RH1 is connected to a second power supply (DC 24V); and one end of a second resistor RL1, one end of a second resistor RL1 is connected with the other end of the first resistor RH1 and the output end of the voltage supply circuit, and the other end of the second resistor RL1 is grounded. Since the voltage of the second power source is 24V, the resistance of the first resistor RH1 is 20 kohms, and the resistance of the second resistor RL1 is 4.7 kohms, according to the voltage division principle, the voltage of the output terminal of the voltage supply circuit is about 5V, so that the transistor Q1 is operated in the saturation state, and at this time, the transistor Q1 is turned on.
With continued reference to fig. 5, the collector of transistor Q1 is connected to a first power supply (DC24V) and is provided with a pull-up resistor RR 1. When the PWM signal inputted from the input terminal of the driving control circuit is 0, the voltage at the voltage output terminal of the driving control circuit is a 24V dimming voltage. Similarly, to stabilize the voltage at the voltage output end of the driving control circuit, a voltage regulator circuit is connected to the collector of the transistor Q1, the voltage regulator circuit includes two zener diodes T6 connected in series in the forward and reverse directions and a fuse, the collector of the transistor Q1 is connected to one end of the two zener diodes T6 connected in series in the forward and reverse directions and one end of the fuse, and the other end of the two zener diodes T6 connected in series in the forward and reverse directions is grounded. Similarly, the driving control circuit corresponding to the green diode Q2 and the driving control circuit corresponding to the blue diode Q3 are also provided with corresponding voltage stabilizing circuits in the same manner, and the voltage stabilizing circuits are provided in the same manner as the voltage stabilizing circuit at the signal input end of the driving chip, so that the details are not repeated.
In an exemplary embodiment, the driving chip may further adjust a duty ratio of the pulse width modulation signal according to the control signal to adjust the average brightness of the light emitting elements. By the mode, the brightness control of the light-emitting element can be realized through a simple circuit structure, the production is facilitated, and the market competitiveness is improved.
The present application further provides a lamp comprising the driving circuit as described above.
The lamp can better realize illumination or building lighting engineering according to source data, and the driving circuit of the light-emitting element in the lamp is simple in structure and high in integration level, so that the preparation cost of the lamp can be effectively reduced, and the market competitiveness of the lamp is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A driver circuit, comprising:
a controller for generating a control signal;
the signal input end of the driving chip is connected with the signal output end of the controller and is used for receiving and decoding the control signal and outputting a corresponding pulse width modulation signal; and the number of the first and second groups,
and the input end of the drive control circuit is connected with the drive signal output end of the drive chip, the output end of the drive control circuit is connected with the light-emitting element, and the drive control circuit is used for generating a voltage pulse signal according to the pulse width modulation signal so as to drive the light-emitting element to work.
2. The driving circuit according to claim 1, wherein the driving chip comprises a plurality of driving signal output terminals, and one driving control circuit is connected to each of the driving signal output terminals.
3. The driving circuit of claim 1, wherein the signal input terminals of the driving chip are differential signal input terminals, and the differential signal input terminals comprise a first differential signal input terminal and a second differential signal input terminal.
4. The driving circuit according to claim 3, further comprising:
the first voltage stabilizing circuit is connected with the first differential signal input end and is used for stabilizing the signal of the first differential signal input end within a preset range;
and the second voltage stabilizing circuit is connected with the second differential signal input end and is used for stabilizing the signal of the second differential signal input end within a preset range.
5. The driving circuit according to any of claims 1-4, wherein the driving chip is an SM165 series chip.
6. The drive circuit according to any one of claims 1 to 4, wherein the drive control circuit includes: the first end of the switch tube is connected with the first power supply and the output end of the drive control circuit, the second end of the switch tube is grounded, and the control end of the switch tube is connected with the input end of the drive control circuit.
7. The drive circuit according to claim 6, wherein the drive control circuit further comprises: and the voltage output end of the voltage providing circuit is connected with the control end of the switch tube and is used for providing breakover voltage for the switch tube.
8. The driving circuit according to claim 7, wherein the voltage supplying circuit comprises:
one end of the first resistor is connected with a second power supply;
and one end of the second resistor is connected with the other end of the first resistor and the output end of the voltage supply circuit, and the other end of the second resistor is grounded.
9. The driving circuit according to any one of claims 1 to 4, wherein the driving chip adjusts a duty ratio of the pulse width modulation signal according to the control signal to adjust an average brightness of the light emitting element.
10. A luminaire comprising a driver circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021010132.XU CN212183780U (en) | 2020-06-04 | 2020-06-04 | Drive circuit and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021010132.XU CN212183780U (en) | 2020-06-04 | 2020-06-04 | Drive circuit and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212183780U true CN212183780U (en) | 2020-12-18 |
Family
ID=73788932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021010132.XU Active CN212183780U (en) | 2020-06-04 | 2020-06-04 | Drive circuit and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212183780U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111511075A (en) * | 2020-06-04 | 2020-08-07 | 大峡谷照明系统（苏州）股份有限公司 | Drive circuit and lamp |
| CN111511062A (en) * | 2020-06-15 | 2020-08-07 | 大峡谷照明系统（苏州）股份有限公司 | Lamp, lamp control system and method |
| CN117188664A (en) * | 2023-09-12 | 2023-12-08 | 潮威建设科技(广州)有限公司 | Lightening LED and stone curtain wall integrated system |
-
2020
- 2020-06-04 CN CN202021010132.XU patent/CN212183780U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111511075A (en) * | 2020-06-04 | 2020-08-07 | 大峡谷照明系统（苏州）股份有限公司 | Drive circuit and lamp |
| CN111511062A (en) * | 2020-06-15 | 2020-08-07 | 大峡谷照明系统（苏州）股份有限公司 | Lamp, lamp control system and method |
| CN117188664A (en) * | 2023-09-12 | 2023-12-08 | 潮威建设科技(广州)有限公司 | Lightening LED and stone curtain wall integrated system |
| CN117188664B (en) * | 2023-09-12 | 2024-05-03 | 潮威建设科技(广州)有限公司 | Lightening LED and stone curtain wall integrated system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212183780U (en) | Drive circuit and lamp | |
| CN110191539B (en) | Drive circuit, drive chip, display system and display method | |
| US8786216B2 (en) | Low cost LED driver with improved serial bus | |
| CN213583061U (en) | Digital LED control circuit with address and capable of being connected in series and parallel at will | |
| CN102917486A (en) | LED lamp adjustable in luminance and color temperature | |
| CN202873136U (en) | LED lamp control system | |
| CN110784962B (en) | Cascaded lighting system and lighting method | |
| CN110088824A (en) | Light supply apparatus, light emitting device and display device | |
| CN204387739U (en) | LED light device and combination LED light device | |
| WO2023179301A1 (en) | Bidirectional light source with signal line control | |
| CN110868773B (en) | Three-primary-color display unit, three-primary-color lamp bead and three-primary-color mixing method | |
| CN112672473A (en) | Multi-code mixed power line edge signal triggered colored lamp device | |
| CN106937441B (en) | A kind of control circuit and luminescence fan component of luminescence fan | |
| CN211909244U (en) | LED drive circuit with variable color temperature | |
| CN103929845B (en) | It is suitable for the light adjusting circuit of linear low density LED driver | |
| CN111511062A (en) | Lamp, lamp control system and method | |
| CN111511075A (en) | Drive circuit and lamp | |
| CN214381497U (en) | Digital LED module capable of being randomly connected in series and parallel | |
| CN210298138U (en) | LED lamp control system | |
| US10455673B1 (en) | Light string with a non-extinguishing function and an independent LED blinking function | |
| CN210807736U (en) | Discrete SIMO dimming and color mixing circuit | |
| US10925136B2 (en) | Lighting apparatus, driving circuit and driving method thereof | |
| CN217389051U (en) | Bidirectional light source with signal line control | |
| CN102737583B (en) | LED (Light Emitting Diode) driving constant current channel output driver, cascading system and driving method of LED driving constant current channel output driver and cascading system | |
| CN110582140A (en) | Method for controlling multiple LEDs by single constant current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215200 north of Linhu Avenue, FenHu high tech Industrial Development Zone, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Grand Canyon Lighting System (Suzhou) Co.,Ltd. Address before: 215200 north of Linhu Avenue, FenHu high tech Industrial Development Zone, Wujiang District, Suzhou City, Jiangsu Province Patentee before: STRONGLED LIGHTING SYSTEMS (SUZHOU) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |