CN116939913A - Efficient and energy-saving LED driving circuit device - Google Patents

Efficient and energy-saving LED driving circuit device Download PDF

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Publication number
CN116939913A
CN116939913A CN202310993121.XA CN202310993121A CN116939913A CN 116939913 A CN116939913 A CN 116939913A CN 202310993121 A CN202310993121 A CN 202310993121A CN 116939913 A CN116939913 A CN 116939913A
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CN
China
Prior art keywords
module
electrically connected
output end
current
capacitor
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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
Application number
CN202310993121.XA
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Chinese (zh)
Inventor
刘金华
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Chongqing Jinruicheng Technology Co ltd
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Chongqing Jinruicheng Technology Co ltd
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Priority to CN202310993121.XA priority Critical patent/CN116939913A/en
Publication of CN116939913A publication Critical patent/CN116939913A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/31—Phase-control circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/345—Current stabilisation; Maintaining constant current
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/36—Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses an efficient and energy-saving LED driving circuit device, which relates to the technical field of LED driving circuits and comprises a current conversion module, a dimming module and a linear dimming module, wherein the output end of the current conversion module is electrically connected with the input end of the dimming module, the output end of the linear dimming module is electrically connected with the output end of the dimming module, the current conversion module comprises a conversion capacitor module, and the output end of the conversion capacitor module is electrically connected with the output end of the dimming module. The invention reduces the amplitude of the high-frequency DC voltage through a high-frequency transformer, rectifies the low-amplitude high-frequency DC voltage by utilizing a rectifying diode at the secondary side, smoothes the low-amplitude high-frequency DC voltage through a converting capacitor module, converts the low-amplitude high-frequency DC voltage into an AC output voltage set by an LED driver, rectifies and smoothes the input DC voltage, converts the AC voltage into an AC, converts the AC into a high-frequency DC, changes the amplitude of the high-frequency DC voltage through transformation, and repeats the rectifying and smoothing step.

Description

Efficient and energy-saving LED driving circuit device
Technical Field
The invention relates to the technical field of LED driving circuits, in particular to an efficient and energy-saving LED driving circuit device.
Background
Besides meeting the safety requirements, the LED driving circuit has two basic functions, namely, the constant current characteristic is kept as much as possible, and particularly, when the power supply voltage varies by +/-15%, the output current can still vary within the range of +/-10%, and the driving circuit has low self-power consumption, so that the system efficiency of the LED can be kept at a high level.
The following problems exist in the prior art:
when the existing LED driving circuit converts direct current into available alternating current, the used accessories are large in size and easy to generate heat, so that the current transmission efficiency is low; when the power input is provided for the LED lamp, the change rate of current and voltage cannot be reduced, so that the circuit is not efficient and energy-saving; meanwhile, when current is input, the current cannot be monitored and compensated, so that the lamplight change seen by eyes is visual and abrupt during dimming, and is not smooth enough.
Disclosure of Invention
The present invention provides an efficient and energy-saving LED driving circuit device to solve the problems set forth in the background art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an energy-efficient LED drive circuit device, includes current conversion module, adjusts luminance module and linear module of adjusting luminance, current conversion module's output and the input electrical signal connection of adjusting luminance the module, linear module's of adjusting luminance output and the output electrical signal connection of adjusting luminance the module, current conversion module includes conversion capacitance module, conversion capacitance module's output and the output electrical signal connection of adjusting luminance the module, conversion capacitance module's input electrical signal connection has rectifier diode, the module of adjusting luminance includes differential mode filter capacitor, differential mode filter capacitor's input and conversion capacitance module's input electrical signal connection, differential mode filter capacitor's input and linear module's of adjusting luminance output electrical signal connection, linear module of adjusting luminance includes pulse width adjustment chip, pulse width adjustment chip's output and differential mode filter capacitor's input electrical signal connection.
The technical scheme of the invention is further improved as follows: the input end of the rectifier diode is electrically connected with a high-frequency transformer, and the input end of the high-frequency transformer is electrically connected with an ON/OFF switching element.
The technical scheme of the invention is further improved as follows: the input end of the ON/OFF switching element is electrically connected with a capacitor, and the input end of the capacitor is electrically connected with a bridge diode.
The technical scheme of the invention is further improved as follows: the output end electric signal of the differential mode filter capacitor is connected with a TRIAC, and the output end electric signal of the TR IAC is connected with a capacitor.
The technical scheme of the invention is further improved as follows: the output end electric signal of the capacitor is connected with a bidirectional trigger diode, and the output end electric signal of the bidirectional trigger diode is connected with an inductor.
The technical scheme of the invention is further improved as follows: the output end of the inductor is electrically connected with a resistor module, and the output end of the resistor module is electrically connected with an LED driver.
The technical scheme of the invention is further improved as follows: the output end of the pulse width adjustment chip is electrically connected with a voltage detection module, and the output end of the voltage detection module is electrically connected with the output end of the conversion capacitor module.
The technical scheme of the invention is further improved as follows: the output end of the voltage detection module is electrically connected with a maintaining current compensation module, and the output end of the maintaining current compensation module is electrically connected with a current generator.
The technical scheme of the invention is further improved as follows: the lower electric signal of the current generator is connected with an RC charge-discharge circuit, and the electric signal of the output end of the RC charge-discharge circuit is connected with a circuit gain module.
By adopting the technical scheme, compared with the prior art, the invention has the following technical progress:
1. the invention provides a high-efficiency energy-saving LED driving circuit device, which adopts a bridge diode to bear high voltage, the peak value of rated current 10VAC is about 155V, the peak value of 220VAC is about 310V, then the capacitor is used for smoothing, the high-voltage standard product is used in the part, then the high-voltage alternating current voltage is chopped through an ON/OFF switching element, electric energy is transmitted to a secondary side through a high-frequency transformer, the frequency of the ON/OFF switching element is generally tens or hundreds of KHZ, then the electric energy is converted into direct current, the amplitude of the direct current is reduced through the high-frequency transformer, the rectifying diode at the secondary side is used for rectifying the high-frequency direct current voltage with low amplitude, the electric energy is converted into alternating current output voltage set by an LED driver after the electric energy is smoothed by a converting capacitor module, the input direct current voltage is converted into alternating current after the rectification smoothing, the alternating current is converted into the direct current with high frequency, and then the amplitude of the alternating current is changed through voltage transformation, the rectifying smoothing step is repeated, and the alternating current is converted into the wanted alternating current voltage.
2. The invention provides a high-efficiency energy-saving LED driving circuit device, when the converted alternating voltage is filtered by a differential mode filter capacitor to reduce impedance matching, and then is added into two ends of a TRIAC, a charging circuit is formed, the charging time is provided, the voltage ON the capacitor is charged from 0V, and a diac is connected in series with a driving pole of the TRIAC, the model adopts 30V, when the voltage ON the charging circuit is increased to 30V, the diac is triggered to conduct, the TRIAC is reliably conducted, the voltage at the two ends of the TRIAC instantaneously becomes zero, one end of the charging circuit is rapidly discharged, when the charging voltage drops below 30V, the diac is cut OFF, if the passing current of the TRIAC is larger than the maintaining current of the TRIAC, the TRIAC is cut OFF, the inductor and the capacitor are used for reducing the change rate of the current and the voltage, so that the problem of electromagnetic interference is restrained, the output and the input of the current are more energy-saving and efficient, and the input voltage can be always in the vicinity of peak value due to chopping of an ON/OFF switching element, and the differential mode filter capacitor can bear large impact current, and simultaneously, the impact current can not be accidentally input to the impact resistance of the TRIAC is reduced at the cut-OFF end when the TRIAC is connected in series.
3. The invention provides a high-efficiency energy-saving LED driving circuit device, which utilizes a common pulse width adjustment chip to be combined with a peripheral circuit, controls the current flowing through a maintaining current compensation module by detecting the input current of a differential mode filter capacitor through the maintaining current compensation module, when the input current is smaller, the maintaining current compensation module flows through larger current, when the input current is larger, the maintaining current compensation module is turned off, the maintaining current compensation module ensures the maintaining current of a TRIAC in a constant current source mode through a current generator, and the current is released from an RC charge-discharge circuit and is ensured to be more efficient through a circuit gain module.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a current conversion module according to the present invention;
FIG. 3 is a schematic diagram of a light modulation module according to the present invention;
fig. 4 is a schematic structural diagram of a linear dimming module according to the present invention.
In the figure: 1. a current conversion module; 11. a bridge diode; 12. a capacitor; 13. an ON/OFF switching element; 14. a high frequency transformer; 15. a rectifier diode; 16. a conversion capacitor module; 2. a dimming module; 21. a differential mode filter capacitor; 22. a TRIAC; 23. a capacitor; 24. a diac; 25. an inductor; 26. a resistor module; 27. an LED driver; 3. a linear dimming module; 31. a pulse width adjustment chip; 32. a voltage detection module; 33. a holding current compensation module; 34. a current generator; 35. an RC charge-discharge circuit; 36. a circuit gain module.
Detailed Description
The invention is further illustrated by the following examples:
example 1
As shown in fig. 1-4, the invention provides a high-efficiency energy-saving LED driving circuit device, which comprises a current conversion module 1, a dimming module 2 and a linear dimming module 3, wherein the output end of the current conversion module 1 is electrically connected with the input end of the dimming module 2, the output end of the linear dimming module 3 is electrically connected with the output end of the dimming module 2, the current conversion module 1 comprises a conversion capacitor module 16, the output end of the conversion capacitor module 16 is electrically connected with the output end of the dimming module 2, the input end of the conversion capacitor module 16 is electrically connected with a rectifier diode 15, the dimming module 2 comprises a differential mode filter capacitor 21, the input end of the differential mode filter capacitor 21 is electrically connected with the input end of the conversion capacitor module 16, the input end of the differential mode filter capacitor 21 is electrically connected with the output end of the linear dimming module 3, the linear dimming module 3 comprises a pulse width adjustment chip 31, and the output end of the pulse width adjustment chip 31 is electrically connected with the input end of the differential mode filter capacitor 21.
In this embodiment, the current conversion module 1 converts, smoothes, chops and other operations on the input dc power, and then converts the dc power into ac power for direct transmission by the LED driving circuit, the dimming module 2 controls the input current, the rated voltage is set to ensure stable output of the maintenance current, the resistor is connected in series to the input end to reduce current impact, and the linear dimming module 3 detects and compensates the input voltage of the current, so that the human eyes feel that dimming of the LED lamp output by the LED driving circuit is a linear stable process.
Example 2
As shown in fig. 1-4, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the high-frequency transformer 14 is electrically connected to the input terminal of the rectifier diode 15, the ON/OFF switching element 13 is electrically connected to the input terminal of the high-frequency transformer 14, the capacitor 12 is electrically connected to the input terminal of the ON/OFF switching element 13, and the bridge diode 11 is electrically connected to the input terminal of the capacitor 12.
In this embodiment, the bridge diode 11 is used to receive high voltage, the peak value of rated current 10VAC is about 155V, the peak value of 220VAC is about 310V, and then the capacitor 12 is used to smooth the voltage, this part is also used to use high voltage standard, then the ON/OFF switching element 13 chops high ac voltage, and transmits the electric energy to the secondary side through the high frequency transformer 14, the frequency of this ON/OFF switching element 13 is usually tens or hundreds of KHZ, then the ON/OFF switching element is converted into dc, the amplitude of this ON/OFF switching element is reduced through the high frequency transformer 14, the low amplitude high frequency dc voltage is rectified by the rectifying diode 15 ON the secondary side, then the dc voltage is smoothed by the rectifying capacitor module 16, then the ac voltage is converted into ac output voltage set by the LED driver 27, after rectifying and smoothing the input dc voltage is converted into ac voltage, then the ac voltage is converted into high frequency dc voltage, and then the amplitude of this ac voltage is changed by the voltage is converted into desired ac voltage by the voltage by repeating the rectifying step, thus having the advantages of small volume, light weight, less heat generation and high efficiency.
Example 3
As shown in fig. 1-4, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the output end electric signal of the differential mode filter capacitor 21 is connected with a TRIAC22, the output end electric signal of the TRIAC22 is connected with a capacitor 23, the output end electric signal of the capacitor 23 is connected with a diac 24, the output end electric signal of the diac 24 is connected with an inductor 25, the output end electric signal of the inductor 25 is connected with a resistor module 26, and the output end electric signal of the resistor module 26 is connected with an LED driver 27.
In this embodiment, when the converted ac voltage is filtered by the differential-mode filter capacitor 21 to reduce impedance matching and then added to the two ends of the TRIAC22, the charging circuit is formed to have a charging time, the voltage ON the capacitor 23 starts to charge from 0V, and the diac 24 is connected in series with the driving pole of the TRIAC22, and the model is 30V, when the voltage ON the charging circuit rises to 30V, the diac 24 triggers ON, the TRIAC22 is reliably turned ON, at this time, the voltage at the two ends of the TRIAC22 instantaneously becomes zero, one end of the charging circuit is rapidly discharged, when the charging voltage drops below 30V, the diac 24 is turned OFF, if the current passing through the TRIAC22 is greater than its holding current, it continues to turn ON, if the holding current is lower than the holding current, the inductor 25 and the capacitor 23 are used to reduce the rate of change of current and voltage, so as to suppress the EMI problem, the output and input of current are more energy-saving and efficient, and because the chopper of the ON/OFF switching element 13 makes the input voltage possibly be in the vicinity of the peak value, the differential-mode filter capacitor 21 is subjected to a large current, and at the same time, the surge current is not accidentally reduced by the surge current at the end of the TRIAC 26.
Example 4
As shown in fig. 1-4, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the output end of the pulse width adjustment chip 31 is electrically connected with a voltage detection module 32, the output end of the voltage detection module 32 is electrically connected with the output end of the conversion capacitor module 16, the output end of the voltage detection module 32 is electrically connected with a maintaining current compensation module 33, the output end of the maintaining current compensation module 33 is electrically connected with a current generator 34, the lower electrical signal of the current generator 34 is connected with an RC charge-discharge circuit 35, and the output end of the RC charge-discharge circuit 35 is electrically connected with a circuit gain module 36.
In this embodiment, the common pulse width adjustment chip 31 is combined with a peripheral circuit, the current flowing through the holding current compensation module 33 is controlled by detecting the input current of the differential mode filter capacitor 21 by the holding current compensation module 33, when the input current is small, the larger current flows through the holding current compensation module 33, when the input current is large, the holding current compensation module 33 is turned off, the holding current compensation module 33 ensures the holding current of the TRIAC22 in the form of a constant current source through the current generator 34, the current is released from the RC charge-discharge circuit 35, and the output of the current is ensured to be more efficient through the circuit gain module 36.
To sum up, as shown in fig. 1 to 4, by using a bridge diode 11 to receive a high voltage, a peak value of a rated current 10VAC is about 155V, a peak value of 220VAC is about 310V, and smoothing is performed by a capacitor 12, and this part is similarly made of a high voltage standard, then a high alternating current voltage is chopped by an ON/OFF switching element 13, and electric power is transmitted to a secondary side via a high frequency transformer 14, and the frequency of the ON/OFF switching element 13 at this time is usually several tens or several hundreds of KHZ, and then converted into a direct current, the amplitude thereof is reduced by the high frequency transformer 14, and the low-amplitude high frequency direct current voltage is rectified by a rectifying diode 15 ON the secondary side, and then smoothed by a rectifying capacitor module 16, and then converted into an alternating current output voltage set by an LED driver 27, and the input direct current voltage is rectified and smoothed, and then converted into an alternating current, the alternating current is converted into direct current with high frequency, the amplitude of the direct current is changed through transformation, and then the rectifying and smoothing steps are repeated, so that the alternating current is converted into the wanted alternating voltage, the advantages of small volume, light weight, difficult heating and high efficiency are achieved, when the converted alternating voltage is filtered by a differential mode filter capacitor 21 to reduce impedance matching, and then is added to two ends of a TRIAC22, a charging circuit formed by the charging circuit has charging time, the voltage ON the capacitor 23 is charged from 0V, and a diac 24 connected in series with a driving electrode of the TRIAC22 is 30V, when the voltage ON the charging circuit rises to 30V, the diac 24 is triggered to conduct, the TRIAC22 is reliably conducted, the voltage at two ends of the TRIAC22 instantaneously becomes zero, one end of the charging circuit rapidly discharges, when the charging voltage drops below 30V, the diac 24 is cut OFF, if the current passing through the TRIAC22 is larger than the maintaining current, the current is continuously conducted, if the maintaining current is lower than the maintaining current, the change rate of the current and the voltage of the inductor 25 and the capacitor 23 is reduced, so that the electromagnetic interference (EM) I problem is restrained, the output and the input of the current are more energy-saving and efficient, the input voltage can be always in the vicinity of a peak value due to the chopping of the ON/OFF switching element 13, the differential mode filter capacitor 21 bears large impact current, meanwhile, the current can be accidentally cut OFF, the TRIAC22 is continuously restarted, the impact is reduced by connecting the resistor module 26 in series at the input end, the current passing through the maintaining current compensation module 33 is controlled by detecting the input current of the differential mode filter capacitor 21 through the maintaining current compensation module 31 by utilizing the common pulse width adjusting chip 31 in combination with a peripheral circuit, when the input current is smaller, the maintaining current compensation module 33 is enabled to pass through larger current, when the input current is larger, the maintaining current compensation module 33 is turned OFF, the maintaining current compensation module 33 guarantees the maintaining current of the TRIAC22 in the form of a constant current source through the current generator 34, the current is released from the charging circuit 35, and the current is enabled to pass through the gain module 36 to be more efficient.
The foregoing invention has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims (9)

1. The utility model provides an energy-efficient LED drive circuit device, includes current conversion module (1), module (2) and linear module (3) of adjusting luminance, its characterized in that: the output end of the current conversion module (1) is electrically connected with the input end of the dimming module (2), and the output end of the linear dimming module (3) is electrically connected with the output end of the dimming module (2);
the current conversion module (1) comprises a conversion capacitor module (16), wherein the output end of the conversion capacitor module (16) is electrically connected with the output end of the dimming module (2), and the input end of the conversion capacitor module (16) is electrically connected with a rectifier diode (15);
the dimming module (2) comprises a differential mode filter capacitor (21), wherein the input end of the differential mode filter capacitor (21) is electrically connected with the input end of the conversion capacitor module (16), and the input end of the differential mode filter capacitor (21) is electrically connected with the output end of the linear dimming module (3);
the linear dimming module (3) comprises a pulse width adjustment chip (31), and the output end of the pulse width adjustment chip (31) is in electrical signal connection with the input end of the differential mode filter capacitor (21).
2. An energy efficient LED driver circuit apparatus as defined in claim 1, wherein: the input end of the rectifying diode (15) is electrically connected with a high-frequency transformer (14), and the input end of the high-frequency transformer (14) is electrically connected with an ON/OFF switching element (13).
3. An energy efficient LED driver circuit apparatus as defined in claim 2, wherein: the input end of the ON/OFF switching element (13) is electrically connected with a capacitor (12), and the input end of the capacitor (12) is electrically connected with a bridge diode (11).
4. An energy efficient LED driver circuit apparatus as defined in claim 1, wherein: the output end of the differential mode filter capacitor (21) is electrically connected with a TRIAC (22), and the output end of the TRIAC (22) is electrically connected with a capacitor (23).
5. The energy efficient LED driver circuit apparatus of claim 4, wherein: the output end of the capacitor (23) is electrically connected with a diac (24), and the output end of the diac (24) is electrically connected with an inductor (25).
6. An energy efficient LED driver circuit apparatus as defined in claim 5, wherein: the output end of the inductor (25) is electrically connected with a resistor module (26), and the output end of the resistor module (26) is electrically connected with an LED driver (27).
7. An energy efficient LED driver circuit apparatus as defined in claim 1, wherein: the output end of the pulse width adjustment chip (31) is electrically connected with a voltage detection module (32), and the output end of the voltage detection module (32) is electrically connected with the output end of the conversion capacitor module (16).
8. An energy efficient LED driver circuit apparatus as defined in claim 7, wherein: the output end of the voltage detection module (32) is electrically connected with a maintaining current compensation module (33), and the output end of the maintaining current compensation module (33) is electrically connected with a current generator (34).
9. The energy efficient LED driver circuit apparatus of claim 8, wherein: an RC charge-discharge circuit (35) is electrically connected to the lower side of the current generator (34), and a circuit gain module (36) is electrically connected to the output end of the RC charge-discharge circuit (35).
CN202310993121.XA 2023-08-08 2023-08-08 Efficient and energy-saving LED driving circuit device Pending CN116939913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310993121.XA CN116939913A (en) 2023-08-08 2023-08-08 Efficient and energy-saving LED driving circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310993121.XA CN116939913A (en) 2023-08-08 2023-08-08 Efficient and energy-saving LED driving circuit device

Publications (1)

Publication Number Publication Date
CN116939913A true CN116939913A (en) 2023-10-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310993121.XA Pending CN116939913A (en) 2023-08-08 2023-08-08 Efficient and energy-saving LED driving circuit device

Country Status (1)

Country Link
CN (1) CN116939913A (en)

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