CN212992655U - Switch segmentation dimming and color mixing control circuit and LED lighting device - Google Patents
Switch segmentation dimming and color mixing control circuit and LED lighting device Download PDFInfo
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Abstract
The utility model provides a switch segmentation is adjusted luminance mixing of colors control circuit and LED lighting device, wherein, this switch segmentation is adjusted luminance mixing of colors control circuit passes through switch segmentation module joinable a plurality of constant current drive module, and detect power module's switching signal through detection module, transmit this switching signal to switch segmentation module, switch segmentation module confirms target mixing of colors mode of adjusting luminance according to switching signal, and output target control signal under adjusting luminance mixing of colors mode, the control signal of switch segmentation module output is analyzed to the constant current drive module who reads the function from the area signal analysis, the adjustment flows the electric current of LED light emitting module, thereby only need through the judgement of a switch segmentation module, output corresponding control signal to constant current drive module, can reach the purpose that changes the mixing of colors mode of adjusting luminance.
Description
Technical Field
The utility model relates to a LED drive technical field especially relates to a switch segmentation is adjusted luminance and is mixed colours control circuit and LED lighting device.
Background
With the continuous expansion of the application range of LED illumination, the LED illumination is gradually developed from the single illumination function to the direction of intellectualization, humanization and energy conservation. In order to meet the requirements of people on light under different scenes, the LED lighting device with the functions of dimming and color mixing by switching is produced.
The traditional switch segmented dimming and color mixing control circuit integrates a switch segmented module and a constant current driving module in the same chip, when multi-chip parallel work is carried out, each chip needs to respectively judge signals output by a detection module, then independent output is carried out, and finally the chips are connected in parallel to form high-current output power supply. When the LED lighting device is formed by connecting a large number of LED lamp strings in parallel, the current required by the whole LED lighting device is far larger than the current provided by a single chip, the number of chips required by a circuit is increased, the number of jumper wires is also greatly increased, great influence is generated on the design of the circuit, and meanwhile, the cost of the whole scheme is also increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a switch segmentation is adjusted luminance and is mixed colours control circuit and LED lighting device to it is more to solve the required chip quantity of current switch segmentation light modulation and colour mixing control circuit, and the wire jumper wiring is complicated, produces the problem of great influence to circuit design.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a switch subsection dimming and color mixing control circuit, which is used for controlling the brightness change and/or the color temperature change of an LED light-emitting module and comprises a power supply module, a detection module, a switch subsection module and at least one constant current driving module; the detection module and the switch segmentation module are integrated in one circuit module, the constant current driving module is integrated in the other circuit module, and the constant current driving module has a signal analyzing and reading function; the input end of the detection module is connected with the power supply module, and the output end of the detection module is connected with the input end of the switch segmentation module; the output end of the switch segmentation module is connected with the input end of the constant current driving module, and the output end of the constant current driving module is connected with the LED light-emitting module;
the power supply module is used for supplying power to the LED light-emitting module; the detection module is used for detecting a switching signal of the power supply module and transmitting the switching signal to the switch segmentation module; the switch segmentation module determines a target dimming and color mixing mode according to the switch signal and outputs a control signal in the target dimming and color mixing mode, wherein the control signal comprises an analog signal or a digital signal; the constant current driving module is used for analyzing and reading the control signal output by the switch segmentation module and adjusting the current flowing through the LED light-emitting module.
Further, the power supply module comprises a wall switch for generating a different switching signal each time it is closed.
Furthermore, the power supply module further comprises an alternating current power supply or a direct current power supply, a winding resistor and a rectifier bridge stack, wherein the input end of the winding resistor is connected with the wall switch, the output end of the winding resistor is connected with one input end of the rectifier bridge stack, and the input end of the wall switch is connected with one output end of the alternating current power supply or the direct current power supply.
Further, the constant current driving module comprises at least two constant current units, the LED light emitting module comprises at least two LED lamp sets emitting different colors, and an output end of each constant current unit is connected to one LED lamp set.
Further, the constant current driving module is used for adjusting the current of at least one LED lamp group in the LED light emitting module according to the control signal.
Furthermore, the constant current driving module comprises at least two output ends, and each output end is connected with one LED lamp string in the LED light-emitting module.
Further, the switch segment module and the detection module are integrated in the same circuit module.
Further, the constant current driving module comprises at least one constant current source.
Furthermore, the constant current source comprises an MOS tube and an operational amplifier, a positive phase input end of the operational amplifier is connected with a reference voltage, a negative phase input end of the operational amplifier is connected with a source electrode of the MOS tube, an output port of the operational amplifier is connected with a grid electrode of the MOS tube, and a drain electrode of the MOS tube is connected with the LED light-emitting module.
Correspondingly, the utility model also provides a LED lighting device, reach as above arbitrary one including the LED light emitting module the switch segmentation adjust luminance mixing of colors control circuit, the switch segmentation is adjusted luminance mixing of colors control circuit and is connected with the LED light emitting module electricity.
Compared with the prior art, the utility model discloses a scheme has following advantage:
the utility model provides a switch segmentation is adjusted luminance and is mixed colours control circuit and LED lighting device, a plurality of constant current drive module can be connected to its switch segmentation module, and detect the switching signal of power module through detection module, transmit this switching signal to switch segmentation module, switch segmentation module confirms the target and adjusts luminance mixing of colors mode according to switching signal, and output target adjusts luminance the control signal under the mixing of colors mode, constant current drive module carries out the analysis to the control signal of switch segmentation module output and reads, the current of LED light emitting module is flowed in the adjustment, thereby only need pass through the judgement of a switch segmentation module, output corresponding control signal to constant current drive module, can reach the purpose that changes the mixing of colors mode of adjusting luminance. In addition, the switch section module and the constant current driving module are integrated in different circuit modules, the effect of no cross wiring can be achieved, no jumper wire or jumper wire resistance is required to be added, the maximum power which can be realized by the switch section dimming and color mixing control circuit is determined by the number of the constant current driving modules, the scheme design is flexible and changeable, and the cost is saved more.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a circuit diagram of a typical high current dimming and toning circuit;
FIG. 2 is a block diagram of a switch segment dimming and toning control circuit according to an exemplary embodiment;
FIG. 3 is a circuit block diagram of a switch segment dimming and toning control circuit according to an exemplary embodiment;
FIG. 4 is a circuit block diagram of a switch segment dimming toning control circuit according to yet another exemplary embodiment;
FIG. 5 is a circuit block diagram of a switch segment dimming toning control circuit according to yet another exemplary embodiment;
FIG. 6 is a circuit block diagram of a switch segment dimming and toning control circuit according to another exemplary embodiment;
FIG. 7 is a circuit block diagram of a constant current source according to an exemplary embodiment;
fig. 8 is a waveform diagram illustrating a switched segment dimming and toning mode according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
The LED lighting device manufactured by the conventional high-power LED constant-current driving power supply partially has the function of switching, sectionally dimming and color mixing. As shown in fig. 1, a typical large current dimming and toning circuit having on-off dimming and automatic reset functions, which can adjust the color temperature and brightness of the LED lighting device by manually switching the wall switch S1, is briefly described below. For example, there may be 3 states of color temperature adjustment, 6500K, 4500K, 3000K, respectively. When the color temperature is 6500K, the brightness of the LED lighting device is 100%; when the color temperature is 4500K, the brightness of the LED lighting device is 50%; when the color temperature is 3000K, the brightness of the LED lighting device is X%, and a plurality of parallel constant current chips U1 and U2 … … Un provide large current required by the LED lighting device. When the LED light emitting modules of the LED lighting device are connected in parallel by a large number of LED lamp strings, the current required by the whole LED lighting device is far larger than the current provided by a single constant current chip, the number of the constant current chips required by the circuit is increased, the number of jumper wires is greatly increased, great influence is generated on the design of the circuit, and the cost of the whole scheme is greatly increased.
Therefore, in order to solve the required chip quantity of present switch segmentation dimming mixing of colors control circuit more, the wire jumper wiring is complicated, produces the problem of great influence to circuit design, the utility model provides a switch segmentation dimming mixing of colors control circuit for the luminance change and/or the colour temperature change of control LED light-emitting module 5, promptly, both can control LED light-emitting module 5's luminance change or colour temperature change alone, but the luminance change and the colour temperature change of simultaneous control LED light-emitting module 5 again. As shown in fig. 2, the switching segment dimming and color adjusting control circuit includes a power supply module 1, a detection module 2, at least one switching segment module 3, and at least one constant current driving module 4; referring to fig. 4, the detection module 2 and the switch segment module 3 are integrated in the same circuit module U11, the constant current driving module 4 is integrated in another circuit module, and the constant current driving module 4 has a signal analyzing and reading function; wherein,
the input end of the detection module 2 is connected with the power supply module 1, and the output end of the detection module 2 is connected with the input end of the switch segmentation module 3; one output end of the switch segmentation module 3 is connected with the input end of a constant current driving module 4, and the output end of the constant current driving module 4 is connected with the LED light-emitting module 5;
the power supply module 1 is used for supplying power to the LED lighting module 5, and the power supply may be AC or DC voltage, i.e. AC/DC. The detection module 2 is used for detecting a switching signal of the power supply module 1 and transmitting the switching signal to the switch segmentation module 3; the switch segmentation module 3 determines a target dimming and color-mixing mode according to the switch signal, and outputs a control signal in the target dimming and color-mixing mode, wherein the control signal may be an analog signal or a digital signal; the constant current driving module 4 is used for analyzing and reading the control signal output by the switch segmentation module 3 and adjusting the current flowing through the LED light-emitting module 5. The LED light-emitting module 5 can be LED lamp beads connected in series, and the LED lamp beads can be formed by connecting a plurality of LED lamps in parallel; the control signal output by the switch segment module 3 can be set into various dimming and toning modes through the outside. The detection module 2 and the switch section module 3 are used as an integrated circuit, the constant current driving module 4 is also used as an integrated circuit, and the accessible position of the input end of the detection module 2 is not particularly limited, and can be arranged in front of a rectifier bridge stack or behind the rectifier bridge stack. The two independent integrated circuits jointly form a control system with the functions of switch subsection constant current dimming, color modulation or dimming and color modulation at the same time.
Specifically, the detection module 2 reads and judges the switching signal generated by the power supply module 1, the detected switching signal is transmitted to the switch segment module 3, the switch segment module 3 determines the target dimming and color mixing mode according to the switching signal, correspondingly outputs different control signals, such as voltage signals in different voltage states, and outputs different voltage signals to the constant current driving module 4, and the constant current driving module 4 analyzes and reads the control signal output by the switch segment module 3 to adjust the current flowing through the LED light emitting module 5. Therefore, the utility model discloses a switch segmentation module 3 can control one or a plurality of constant current drive module 4 of simultaneous control, and the power size of system is only decided by the quantity of constant current drive module 4.
The utility model provides a switch segmentation dimming mixing of colors control circuit, a switch segmentation module 3 of which can be connected with a plurality of constant current drive modules 4, and detect the switching signal of the power supply module 1 through the detection module 2, transmit the switching signal to the switch segmentation module 3, the switch segmentation module 3 determines the target dimming mixing of colors mode according to the switching signal, and outputs the control signal under the target dimming mixing of colors mode, the constant current drive module 4 analyzes and reads the control signal output by the switch segmentation module 3, adjusts the current flowing through the LED light-emitting module 5, thereby changing the condition that the traditional switch segmentation module 3 and the constant current drive module 4 are integrated in the same chip, and divides the two modules into two independent chips for use, when using the switch segmentation module 3 to change the output state, only need to pass through the judgment of the switch segmentation module 3 once, and outputting a corresponding control signal to the constant current driving module 4, so as to achieve the purpose of changing the dimming and color mixing modes. In addition, the switch section module 3 and the constant current driving module 4 are integrated in different circuit modules, the effect of no wiring intersection can be achieved, no additional jumper wire or jumper wire resistance is needed, the maximum power which can be achieved by the switch section dimming and color mixing control circuit is determined by the number of the constant current driving modules 4, the scheme design is flexible and changeable, and the cost is saved more.
Further, as shown in fig. 3 to 6, the power supply module 1 includes an ac power source or a dc power source, a wall switch S1, a winding resistor FR1 and a bridge rectifier D1, wherein the wall switch S1 is connected to the power grid for generating different switching signals each time the wall switch S1 is closed, an input end of the winding resistor FR1 is connected to the wall switch S1, an output end of the winding resistor FR1 is connected to one input end of the bridge rectifier D1, and an input end of the wall switch S1 is connected to one output end of the ac power source or the dc power source. Specifically, the mains supply supplies power to the chip of the switch section module 3 and the chip of the constant current driving module 4 after being filtered by the rectifier bridge stack D1 and the capacitor inductor, the closing of the wall switch S1 affects the input alternating current signal and outputs a corresponding switch signal, the detection module 2 determines the closing condition of the wall switch S1 by detecting the switch signal of the wall switch S1 and transmits the switch signal to the switch section module 3, and the switch section module 3 determines a target dimming and color mixing mode according to the switch signal and outputs a control signal in the target dimming and color mixing mode to control the constant current driving module 4 to adjust the current flowing through the LED light emitting module 5. The signal sampling position of the detection module 2 is not limited, and may be a detection position where an input line network or a voltage rectified by a bridge rectifier bridge or a circuit has a switching signal.
Further, the constant current driving module 4 includes at least two constant current units, the LED light emitting module 5 includes at least two LED lamp sets emitting different colors, an output end of each constant current unit is connected to one LED lamp set, and the constant current driving module 4 is configured to adjust a current of at least one LED lamp set in the LED light emitting module 5 according to the control signal. Of course, the utility model discloses the mixing of colors mode of adjusting luminance of a LED banks can also be connected to per two constant current unit's output. When the LED dimming circuit is applied to dimming, only one constant current driving module 4 and the LED lamp set emitting one color can be provided, and dimming of the LED lamp set emitting one color can be realized by adjusting the output current of the constant current driving module 4. As shown in fig. 5, the LED lighting module 5 includes a white LED lamp set emitting white light and a red LED lamp set emitting red light, the two LED lamp sets are connected in parallel, the constant current driving module 4 includes four constant current units, and the output ends of every two constant current units are connected to one of the LED lamp sets, so as to adjust the current of any one of the LED lamp sets according to the control signal output by the switch segment module 3, thereby realizing dimming and color mixing of the LED lighting module 5.
In an embodiment, a single constant current driving module 4 may be in the form of a single-path constant current circuit, a dual-path constant current circuit, or a multi-path constant current circuit. As shown in fig. 6, the constant current driving module 4 includes at least two output ends, each output end is connected to one LED string in the LED light emitting module 5, and when the LED light emitting module 5 is formed by connecting a plurality of LED strings in series, each output end of the constant current driving module 4 is connected to one end of one LED string.
Further, as shown in fig. 7 and with reference to fig. 3, the constant current driving module 4 includes at least one constant current source, the constant current source includes a MOS transistor Q2 and an operational amplifier INV1, a positive input terminal of the operational amplifier INV1 is connected to the reference voltage Uref, a negative input terminal is connected to the source S2 of the MOS transistor Q2, an output terminal is connected to the gate G2 of the MOS transistor Q2, and the drain D2 of the MOS transistor Q2 is connected to the LED lighting module 5. Specifically, the constant current driving module 4 may be composed of a single or multiple constant current sources, the constant current driving module 4 has an interface for receiving a control signal, the constant current driving module 4 performs constant current driving on the LED light emitting module 5, and the constant current driving module 4 may further have a constant power adjusting function or other specific functions.
It should be noted that, the utility model discloses a switch segmentation is adjusted luminance mixing of colors control circuit can adjust luminance alone or mixing of colors mode, also can adjust luminance mixing of colors mode simultaneously. The following describes the switch segment module 3 specifically determining the target dimming and color-mixing mode according to the switch signal:
TABLE 1 functional table for switching and dimming modes
As shown in the switch dimming mode function table shown in table 1 and shown in fig. 8, the switch segment module 3 can be turned on 1-3 times, and the switch states include 3 states, and of course, the switch states may also be 2 states, which is not limited herein. The detection module 2 outputs a 0-1V voltage signal after detecting a corresponding switch signal and transmits the voltage signal to the switch segmentation module 3, and the switch segmentation module 3 outputs a control signal after receiving the signal to control the constant current driving module 4 to output a 0-30mA current, wherein if the output voltage signal is 1V, the output current is 30 mA; when the voltage signal is 0.5V, the output current is 15 mA; when the voltage signal is 0.1V, the output current is 3mA, and the luminance of the light generated by the LED lighting module 5 after receiving the current is in direct proportion to the current intensity, that is, the driving current of the LED lighting device is changed, for example, when the output current is 30mA, the luminance is 100%; when the output current is 15mA, the luminous brightness is 50 percent; when the output current is 3mA, the luminous brightness is 10%, so that the switch dimming mode is realized.
TABLE 2 functional table of brightening and toning modes
Similarly, as shown in the switch color modulation mode function table shown in table 2, the switch segment module 3 can control the output of the two output terminals, thereby controlling the output currents of the two constant current driving modules 4. For example, in a first on state, the detection module 2 outputs a voltage signal after detecting a corresponding switch signal, and transmits the voltage signal to the switch segment module 3, and the switch segment module 3 outputs a control signal to the constant current driving module 4 corresponding to the white LED lamp set after receiving the switch signal, and outputs a current of 30mA to control the white LED lamp set to emit white light; in the second on-state, after receiving the switching signal, the switch segment module 3 can simultaneously output a control signal to the constant current driving module 4 of the white light LED lamp group and the yellow light LED lamp group, and output a current of 15mA to control the yellow light LED lamp group and the white light LED lamp group to emit light simultaneously, so that the LED light emitting module 5 emits natural light; in the third on state, after receiving the switch signal, the switch segment module 3 may output a control signal to the constant current driving module 4 corresponding to the yellow LED lamp group, and output a current of 30mA to control the yellow LED lamp group to emit light with 10% brightness.
TABLE 3 functional table for switching light, light and color modes
Similarly, as shown in the switching dimming and color-mixing mode function table shown in table 3, the switching segment module 3 can control the output of the two output terminals, so as to control the output currents of the two constant current driving modules 4. For example, in a first on state, the detection module 2 outputs a voltage signal after detecting a corresponding switch signal, and transmits the voltage signal to the switch segment module 3, and the switch segment module 3 outputs a control signal to the constant current driving module 4 corresponding to the white LED lamp group after receiving the switch signal, and outputs a current of 30mA to control the white LED lamp group to emit light with 100% brightness; in a second on-state, the switch segmentation module 3 can output a control signal to the constant current driving module 4 corresponding to the yellow light LED lamp group after receiving the switch signal, and output a current of 30mA to control the yellow light LED lamp group to emit light with 100% brightness; in the third on state, after receiving the switch signal, the switch segment module 3 may output a control signal to the constant current driving module 4 corresponding to the yellow LED lamp group, and output a current of 3mA to control the yellow LED lamp group to emit light with 10% brightness.
Table 4 output control mode setting table
Table 4 is the utility model discloses output control mode sets up the table, sets up through the SEL1 SEL2 port to constant current drive module 4, and switch segmentation module 3 controls 4 exportable multiple dimming of constant current drive module, mixing of colors mode.
The utility model discloses can realize the mixing of colors function of adjusting luminance of simple easy operation according to wall switch S1' S closed decision output current, just the utility model discloses the circuit integrated level is high, and peripheral device is nimble, and the design is nimble, and the system application cost is lower than traditional mixing of colors mode of adjusting luminance.
Correspondingly, the utility model also provides a LED lighting device, reach including LED light emitting module 5 switch segmentation is adjusted luminance mixing of colors control circuit, switch segmentation is adjusted luminance mixing of colors control circuit and is connected with LED light emitting module 5 electricity.
The utility model provides a LED lighting device, a switch segment module 3 of the switch segment dimming and color mixing control circuit can be connected with a plurality of constant current driving modules 4, and detect the switch signal of the power supply module 1 through the detection module 2, transmit the switch signal to the switch segment module 3, the switch segment module 3 determines the target dimming and color mixing mode according to the switch signal and outputs the control signal under the target dimming and color mixing mode, the constant current driving module 4 analyzes and reads the control signal output by the switch segment module 3, adjusts the current flowing through the LED light-emitting module 5, thereby changing the condition that the traditional switch segment module 3 and the constant current driving module 4 are integrated on the same chip, dividing the two modules into two independent chips for use, when using the switch segment module 3 to change the output state, only needing to pass through the judgment of the switch segment module 3 once, and outputting a corresponding control signal to the constant current driving module 4, so as to achieve the purpose of changing the dimming and color mixing modes. In addition, the switch section module 3 and the constant current driving module 4 are integrated in different circuit modules, the effect of no wiring intersection can be achieved, no additional jumper wire or jumper wire resistance is needed, the maximum power which can be achieved by the switch section dimming and color mixing control circuit is determined by the number of the constant current driving modules 4, the scheme design is flexible and changeable, and the cost is saved more.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A switch segmented dimming and color mixing control circuit is used for controlling brightness change and/or color temperature change of an LED light-emitting module and is characterized by comprising a power supply module, a detection module, a switch segmented module and at least one constant current driving module; the detection module and the switch segmentation module are integrated in one circuit module, the constant current driving module is integrated in the other circuit module, and the constant current driving module has a signal analyzing and reading function; the input end of the detection module is connected with the power supply module, and the output end of the detection module is connected with the input end of the switch segmentation module; the output end of the switch segmentation module is connected with the input end of the constant current driving module, and the output end of the constant current driving module is connected with the LED light-emitting module;
the power supply module is used for supplying power to the LED light-emitting module; the detection module is used for detecting a switching signal of the power supply module and transmitting the switching signal to the switch segmentation module; the switch segmentation module determines a target dimming and color mixing mode according to the switch signal and outputs a control signal in the target dimming and color mixing mode, wherein the control signal comprises an analog signal or a digital signal; the constant current driving module is used for analyzing and reading the control signal output by the switch segmentation module and adjusting the current flowing through the LED light-emitting module.
2. The switch segmented dimming and toning circuit of claim 1, wherein the power supply module comprises a wall switch for generating a different switching signal each time the wall switch is closed.
3. The switch segment dimming and color adjusting control circuit according to claim 2, wherein the power supply module further comprises an ac power supply or a dc power supply, a winding resistor and a bridge rectifier, an input end of the winding resistor is connected to the wall switch, an output end of the winding resistor is connected to one input end of the bridge rectifier, and an input end of the wall switch is connected to one output end of the ac power supply or the dc power supply.
4. The switch segment dimming and color mixing control circuit according to claim 1, wherein the constant current driving module comprises at least two constant current units, the LED light emitting module comprises at least two LED lamp sets emitting different colors, and an output end of each constant current unit is connected with one LED lamp set.
5. The circuit according to claim 4, wherein the constant current driving module is configured to adjust a current of at least one LED lamp set in the LED lighting module according to the control signal.
6. The switch-section dimming and color-mixing control circuit according to claim 1, wherein the constant current driving module comprises at least two output ends, and each output end is connected with one LED string in the LED light emitting module.
7. The switch-segment dimming and toning control circuit of claim 1, wherein the switch-segment module and the detection module are integrated in the same circuit module.
8. The switched segment dimming and color modulation control circuit of claim 1, wherein the constant current driving module comprises at least one constant current source.
9. The switch-section dimming and color-adjusting control circuit according to claim 8, wherein the constant current source comprises an MOS transistor and an operational amplifier, a positive input terminal of the operational amplifier is connected to the reference voltage, a negative input terminal of the operational amplifier is connected to a source of the MOS transistor, an output terminal of the operational amplifier is connected to a gate of the MOS transistor, and a drain of the MOS transistor is connected to the LED lighting module.
10. An LED lighting device, comprising an LED lighting module and the switch-segment dimming and color-adjusting control circuit according to any one of claims 1 to 9, wherein the switch-segment dimming and color-adjusting control circuit is electrically connected to the LED lighting module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113993240A (en) * | 2021-10-09 | 2022-01-28 | 宁波赛耐比光电科技有限公司 | Dimming and color mixing circuit |
| CN115633422A (en) * | 2022-09-19 | 2023-01-20 | 深圳市明微电子股份有限公司 | Switch segment color temperature control circuit and method |
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2020
- 2020-09-10 CN CN202021976529.4U patent/CN212992655U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113993240A (en) * | 2021-10-09 | 2022-01-28 | 宁波赛耐比光电科技有限公司 | Dimming and color mixing circuit |
| CN113993240B (en) * | 2021-10-09 | 2024-02-27 | 宁波赛耐比光电科技有限公司 | Dimming and toning circuit |
| CN115633422A (en) * | 2022-09-19 | 2023-01-20 | 深圳市明微电子股份有限公司 | Switch segment color temperature control circuit and method |
| CN115633422B (en) * | 2022-09-19 | 2025-02-14 | 深圳市明微电子股份有限公司 | Switch segmented color temperature control circuit and method |
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