CN219612076U - LED color temperature regulating circuit - Google Patents
LED color temperature regulating circuit Download PDFInfo
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- CN219612076U CN219612076U CN202321315900.6U CN202321315900U CN219612076U CN 219612076 U CN219612076 U CN 219612076U CN 202321315900 U CN202321315900 U CN 202321315900U CN 219612076 U CN219612076 U CN 219612076U
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Abstract
The utility model relates to an LED color temperature regulating circuit which comprises a power supply module, a control module, a first driving module and a second driving module; the power supply module outputs current and voltage through an external power supply, so as to provide working current for the whole circuit; the control module is provided with a control button, and after a switch signal of the control button is identified, an adjusting signal is output, the color temperature of one connected LED lamp is changed by utilizing the first driving module, and the color temperature of the other connected LED lamp is changed by utilizing the second driving module. The first driving module and the second driving module are used for outputting opposite control signals at the same time, the first driving module is used for driving the color temperature of the LED to gradually increase, and the second driving module is used for driving the color temperature of the LED to gradually decrease, so that the effect of adjusting cold light and warm light at the same time is realized.
Description
Technical Field
The utility model relates to the technical field of light adjusting circuits, in particular to an LED color temperature adjusting circuit.
Background
LED lamps have found widespread use as illumination sources, while adjustable LED illumination sources are increasingly being used. Dimming LED lighting power supplies are of many kinds, and there is color temperature regulation in addition to light regulation
In the adjustment of the color temperature of an LED, PWM signals are generally used to adjust the light beams of different color temperatures mixed into a white light, where the luminous flux of the mixed light beam is the sum of the luminous fluxes of the LEDs of the light beams of different color temperatures. By changing the driving current of the light rays with different color temperatures, the luminous flux with different color temperatures is changed, and the dynamically adjustable white light is obtained. The color temperature of the light is divided into cold light and warm light, and when the light is switched between the cold light and the warm light, different control modes are needed for switching.
For the above related art, when the adjustment is performed in two modes of cold light and warm light at the same time, the color temperature of the light needs to be separately adjusted, which has a defect of inconvenient control.
Disclosure of Invention
In order to facilitate the simultaneous adjustment of cold light and warm light, the utility model provides an LED color temperature adjusting circuit.
The utility model provides an LED color temperature regulating circuit, which adopts the following technical scheme.
An LED color temperature adjustment circuit comprising:
the power supply module is used for providing working current;
the control module is provided with a control button, and the control module receives a switch signal of the control button and then outputs an adjusting signal;
the first driving module is electrically connected with the power supply module and the control module respectively, a first control signal corresponding to a first color temperature value is preset in the first driving module, a first connecting end is arranged in the first driving module and used for being connected with an external LED, and the first driving module is used for outputting a first control signal of which the color temperature value gradually increases from the first color temperature value after receiving the adjusting signal;
the second driving module is respectively and electrically connected with the power supply module and the control module, a second control signal corresponding to a second color temperature value is preset in the second driving module, the second driving module is provided with a second connecting end, the second connecting end is used for connecting an external LED, the second driving module is used for outputting a second control signal with the color temperature value gradually reduced from the second color temperature value after receiving the adjusting signal, and the second color temperature value is higher than the first color temperature value.
By adopting the technical scheme, the control button transmits the switch signal to the control module and generates the adjusting signal output by the control module. After receiving the adjusting signal, the first driving module and the second driving module output opposite control signals at the same time, the first driving module drives the color temperature of the LED to gradually increase, and the second driving module drives the color temperature of the LED to gradually decrease, so that the effect of adjusting cold light and warm light at the same time is realized.
Optionally, the power supply module includes a transient diode TVS1 and a protection inductor, where an anode line and a cathode line are provided in the power supply module, and the protection inductor is respectively connected in series with the anode line and the cathode line; the transient diode TVS1 is connected in series between the positive electrode line and the negative electrode line, and the anode of the transient diode TVS1 is connected with the positive electrode line, and the cathode of the transient diode TVS1 is connected with the negative electrode line.
By adopting the technical scheme, the stability of the positive electrode line and the negative electrode line when the power is simultaneously connected is protected by the transient diode TVS1, and the impact of the power is reduced by the protection inductor.
Optionally, the control module includes steady voltage chip U1, steady voltage chip U1 with power module connects, steady voltage chip U1 outputs stable voltage.
Through adopting above-mentioned technical scheme, utilize steady voltage chip U1 to export a steady voltage value, provide stable operational environment for control module, guarantee control module's normal work.
Optionally, the control module includes a control chip U2, a first triode B1 and a second triode B2, where the control chip U2 is connected to the power supply module, a base of the first triode B1 and a base of the second triode B2 are simultaneously connected to an output control pin of the control chip U2, and an emitter of the first triode B1 and an emitter of the second triode B2 are simultaneously grounded; the collector of the first triode B1 is connected with the first driving module, and the collector of the first triode B1 is connected with the voltage stabilizing chip U1 through a pull-up resistor; the collector of the second triode B2 is connected with the second driving module, and the collector of the second triode B2 is connected with the voltage stabilizing chip U1 through a pull-up resistor.
Through adopting above-mentioned technical scheme, output control pin by control chip U2 outputs adjusting signal to through first triode B1 and second triode B2 with adjusting signal synchronous output first drive module and second drive module, realize two LED synchronous regulation control.
Optionally, the first driving module includes a first driving chip U3, a first capacitor C1, a second capacitor C2, and a first inductor L3; the first driving chip U3 is connected with the positive electrode in the power supply module, and the first driving chip U3 receives an adjusting signal; the first capacitor C1 and the second capacitor C2 are connected in series, the first capacitor C1 is connected with the positive electrode in the power supply module, the second capacitor C2 is connected with the negative electrode in the power supply module, and a connecting node between the first capacitor C1 and the second capacitor C2 is the negative electrode in the first connecting end; the first inductor L3 is connected in series between the output pin of the first driving chip U3 and the negative electrode in the first connection terminal.
By adopting the technical scheme, the first driving chip U3 receives the adjusting signal and outputs the PWM signal through the output pin of the first driving signal. After the PWM signal passes through the first inductor L3, the connection node between the first capacitor C1 and the second capacitor C2 is used as the negative electrode in the first connection terminal to provide a PWM signal corresponding to the externally connected LED.
Optionally, a first current resistor R1 is further disposed in the first driving module, and the first current resistor R1 is connected in series between the positive electrode of the power supply module and the first capacitor C1.
Optionally, the second driving module includes a second driving chip U4, a third capacitor C3, a fourth capacitor C4, and a second inductor L4; the third capacitor C3 and the fourth capacitor C4 are connected in series, the third capacitor C3 is connected with the positive electrode in the power supply module, and the second driving chip U4 receives an adjusting signal; the fourth capacitor C4 is connected with the negative electrode in the power supply module, and a connection node between the third capacitor C3 and the fourth capacitor C4 is the negative electrode in the second connection end; the second inductor L4 is connected in series between the output pin of the second driving chip U4 and the negative electrode in the second connection terminal.
By adopting the technical scheme, the second driving chip U4 receives the adjusting signal and outputs the PWM signal through the output pin of the second driving signal. After the PWM signal passes through the third inductor, the connection node between the third capacitor C3 and the fourth capacitor C4 is used as the negative electrode in the second connection terminal to provide a PWM signal corresponding to the externally connected LED.
Optionally, a second current resistor R2 is further disposed in the second driving module, and the second current resistor R2 is connected in series between the positive electrode of the power supply module and the third capacitor C3.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the first driving module and the second driving module are used for simultaneously outputting opposite control signals, the first driving module is used for driving the color temperature of the LED to gradually increase, and the second driving module is used for driving the color temperature of the LED to gradually decrease, so that the effect of simultaneously adjusting cold light and warm light is realized.
2. The circuit can be protected after the power is connected, and the circuit protection function is achieved.
3. One signal can be synchronized to the first driving module and the second driving module, so that the synchronous adjustment control of the two LEDs is realized.
Drawings
Fig. 1 is a schematic circuit diagram of an LED color temperature adjusting circuit according to an embodiment of the present utility model.
Reference numerals illustrate: 1. a power supply module; 2. a control module; 3. a first driving module; 4. and a second driving module.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
The following embodiments, the terms "first", "second" are used for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
"connected" in this embodiment includes both direct and indirect connections, such as through some active device, passive device, or electrically conductive medium; connections through other active or passive devices, such as through switches, follower circuits, etc. circuits or components, may be included as known to those skilled in the art, on the basis of achieving the same or similar functional objectives.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.
The embodiment of the utility model discloses an LED color temperature adjusting circuit. Referring to fig. 1, an LED color temperature adjusting circuit includes a power supply module 1, a control module 2, a first driving module 3, and a second driving module 4. The power supply module 1 outputs current and voltage through an external power supply, thereby providing working current for the whole circuit.
The control module 2 is provided with a control button, and after the switch signal of the control button is identified, an adjusting signal is output, and the color temperature of one connected LED lamp is changed by using the first driving module 3, and the color temperature of the other connected LED lamp is changed by using the second driving module 4.
Specifically, the first driving module 3 is electrically connected with the power supply module 1 and the control module 2 respectively, and the power supply module 1 supplies power to the first driving module 3 and receives an adjusting signal of the control module 2; the second driving module 4 is also electrically connected with the power supply module 1 and the control module 2 respectively, and also receives the adjusting signal of the control module 2.
The first driving module 3 is preset with a first control signal corresponding to the first color temperature value, and the first driving module 3 is provided with a first connecting end. The first connecting end is connected with an external LED lamp, and the LED lamp connected with the current first driving module 3 is driven to generate a corresponding color temperature through a first control signal. The second driving module 4 is also provided with a second control signal corresponding to the second color temperature value in advance, and the second driving module 4 is provided with a second connecting end. The LED lamp connected with the current second driving module 4 is driven to generate a corresponding color temperature through the second control signal.
The driving processes set by the first driving module 3 and the second driving module 4 are opposite, and the second color temperature value is higher than the first color temperature value, so that the entire circuit can connect two LED lamps of different color temperatures, such as a cold light lamp and a warm light lamp. After the first driving module 3 receives the adjusting signal, the first driving module 3 outputs a first control signal, and the color temperature value corresponding to the first control signal gradually increases from the first color temperature value. And after the second driving module 4 receives the adjusting signal, the second driving module 4 outputs a second control signal, and the color temperature value corresponding to the second control signal gradually decreases from the second color temperature value.
Specifically, the power supply module 1 includes a transient diode TVS1 and a protective inductance. The power supply module 1 is provided with a positive electrode circuit and a negative electrode circuit, and the positive electrode circuit and the negative electrode circuit are connected with a power supply. In this embodiment, the power supply uses 24V dc power. The protection inductors are respectively connected in series in the positive electrode line and the negative electrode line, and meanwhile, the transient diode TVS1 is connected in series between the positive electrode line and the negative electrode line. The anode of the transient diode TVS1 is connected with the positive electrode line, and the cathode of the transient diode TVS1 is connected with the negative electrode line. The protection inductance is used for protecting the conduction safety of the positive electrode line and the conduction safety of the negative electrode line, and the transient diode TVS1 is used for ensuring the stable operation of the power supply module 1 when the power supply is connected.
Specifically, the control module 2 includes a voltage stabilizing chip U1, a control chip U2, a first triode B1 and a second triode B2, the voltage stabilizing chip U1 is connected with the power supply module 1, and the voltage stabilizing chip U1 outputs a stable voltage; the control chip U2 is connected with the power supply module 1, and the power supply module 1 provides working voltage for the control chip U2. One end of the control key is grounded, the other end of the control key is connected to a pin of the control chip U2, and the control chip U2 recognizes the switching value of the control key. And outputs the adjustment signal in combination with a program stored inside the control chip U2.
The base of the first triode B1 and the base of the second triode B2 are simultaneously connected to the output control pin of the control chip U2, so that when the output control pin of the control signal is at a high level, the first triode B1 and the second triode B2 are simultaneously conducted. The emitter of the first triode B1 and the emitter of the second triode B2 are grounded at the same time, the collector of the first triode B1 is connected with the first driving module 3, and the collector of the second triode B2 is connected with the second driving module 4. Therefore, when the first transistor B1 and the second transistor B2 are turned on simultaneously, the first driving module 3 and the second driving module 4 receive the low level signal simultaneously.
And the collector of the first triode B1 is connected with the voltage stabilizing chip U1 through a pull-up resistor, and meanwhile, the collector of the first triode B1 is connected with a pin of the control chip U2 through the pull-up resistor, so that the first driving module 3 is kept to receive high-level signals. Similarly, the collector of the second triode B2 is connected to the voltage stabilizing chip U1 through a pull-up resistor, and meanwhile, the collector of the second triode B2 is connected to the pin of the control chip U2 through a pull-up resistor, so that the second driving module 4 is kept to receive the high-level signal.
The first driving module 3 includes a first driving chip U3, a first capacitor C1, a second capacitor C2, a first inductor L3, and a first current resistor R1. The first driving chip U3 is connected to the positive pole in the power supply module 1, i.e. to the positive pole line in the power supply module 1. The first driving chip U3 is provided with a data input pin, and outputs a PWM signal after receiving the adjusting signal.
The first capacitor C1 and the second capacitor C2 are connected in series, the first capacitor C1 is connected with the positive electrode line, and the second capacitor C2 is connected with the negative electrode line; the connection node between the first capacitor C1 and the second capacitor C2 is a negative electrode in the first connection terminal, and the positive electrode line is a positive electrode in the first connection terminal. The first inductor L3 is connected in series between the output pin of the first driving chip U3 and the negative electrode in the first connection terminal, and the first current resistor R1 is connected in series between the positive electrode of the power supply module 1 and the first capacitor C1. The frequency of the output PWM signal is changed by the first driving chip U3, thereby changing the color temperature of the LED lamp.
The second driving module 4 and the first driving module 3 have the same structure. The second driving module 4 includes a second driving chip U4, a third capacitor C3, a fourth capacitor C4, a second inductor L4, and a second current resistor R2. The second driving chip U4 is connected to the positive pole in the power supply module 1, i.e. to the positive pole line in the power supply module 1. The second driving chip U4 is provided with a data input pin, and outputs a PWM signal after receiving the adjusting signal.
The third capacitor C3 and the fourth capacitor C4 are connected in series, the third capacitor C3 is connected with the positive electrode line, and the fourth capacitor C4 is connected with the negative electrode line; the connection node between the third capacitor C3 and the fourth capacitor C4 is the negative electrode in the second connection terminal, and the positive electrode line is the positive electrode in the second connection terminal. The second inductor L4 is connected in series between the output pin of the second driving chip U4 and the negative electrode in the second connection terminal, and the second current resistor R2 is connected in series between the positive electrode of the power supply module 1 and the third capacitor C3. The frequency of the output PWM signal is changed by the second driving chip U4, thereby changing the color temperature of the LED lamp.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. An LED color temperature adjustment circuit, comprising:
a power supply module (1), the power supply module (1) being configured to provide an operating current;
the control module (2) is provided with a control button, and the control module (2) receives a switch signal of the control button and then outputs an adjusting signal;
the first driving module (3), the first driving module (3) is electrically connected with the power supply module (1) and the control module (2) respectively, a first control signal corresponding to a first color temperature value is preset in the first driving module (3), the first driving module (3) is provided with a first connecting end, the first connecting end is used for connecting an external LED, and the first driving module (3) is used for outputting a first control signal of which the color temperature value gradually increases from the first color temperature value after receiving the adjusting signal;
the second driving module (4), second driving module (4) respectively with power module (1) and control module (2) electricity is connected, be provided with the second control signal that the second colour temperature value corresponds in advance in second driving module (4), second driving module (4) are provided with the second link, the second link is used for connecting outside LED, second driving module (4) are used for outputting the colour temperature value and follow second colour temperature value and reduce corresponding second control signal gradually after receiving the adjustment signal, the second colour temperature value is higher than first colour temperature value.
2. The LED color temperature adjustment circuit of claim 1, wherein: the power supply module (1) comprises a transient diode TVS1 and a protection inductor, wherein an anode line and a cathode line are arranged in the power supply module (1), and the protection inductor is respectively connected in series in the anode line and the cathode line; the transient diode TVS1 is connected in series between the positive electrode line and the negative electrode line, and the anode of the transient diode TVS1 is connected with the positive electrode line, and the cathode of the transient diode TVS1 is connected with the negative electrode line.
3. The LED color temperature adjustment circuit of claim 1, wherein: the control module (2) comprises a voltage stabilizing chip U1, the voltage stabilizing chip U1 is connected with the power supply module (1), and the voltage stabilizing chip U1 outputs stable voltage.
4. The LED color temperature adjustment circuit of claim 3, wherein: the control module (2) comprises a control chip U2, a first triode B1 and a second triode B2, wherein the control chip U2 is connected with the power supply module (1), the base electrode of the first triode B1 and the base electrode of the second triode B2 are simultaneously connected to an output control pin of the control chip U2, and the emitter electrode of the first triode B1 and the emitter electrode of the second triode B2 are simultaneously grounded; the collector of the first triode B1 is connected with the first driving module (3), and the collector of the first triode B1 is connected with the voltage stabilizing chip U1 through a pull-up resistor; the collector of the second triode B2 is connected with the second driving module (4), and the collector of the second triode B2 is connected with the voltage stabilizing chip U1 through a pull-up resistor.
5. The LED color temperature adjustment circuit of claim 1, wherein: the first driving module (3) comprises a first driving chip U3, a first capacitor C1, a second capacitor C2 and a first inductor L3; the first driving chip U3 is connected with the positive electrode in the power supply module (1), and the first driving chip U3 receives an adjusting signal; the first capacitor C1 and the second capacitor C2 are connected in series, the first capacitor C1 is connected with the positive electrode in the power supply module (1), the second capacitor C2 is connected with the negative electrode in the power supply module (1), and a connecting node between the first capacitor C1 and the second capacitor C2 is the negative electrode in the first connecting end; the first inductor L3 is connected in series between the output pin of the first driving chip U3 and the negative electrode in the first connection terminal.
6. The LED color temperature adjustment circuit of claim 5, wherein: the first driving module (3) is also provided with a first current resistor R1, and the first current resistor R1 is connected in series between the anode of the power supply module (1) and the first capacitor C1.
7. The LED color temperature adjustment circuit of claim 1, wherein: the second driving module (4) comprises a second driving chip U4, a third capacitor C3, a fourth capacitor C4 and a second inductor L4; the third capacitor C3 and the fourth capacitor C4 are connected in series, the third capacitor C3 is connected with the positive electrode in the power supply module (1), and the second driving chip U4 receives an adjusting signal; the fourth capacitor C4 is connected with the negative electrode in the power supply module (1), and a connection node between the third capacitor C3 and the fourth capacitor C4 is the negative electrode in the second connection end; the second inductor L4 is connected in series between the output pin of the second driving chip U4 and the negative electrode in the second connection terminal.
8. The LED color temperature adjustment circuit of claim 7, wherein: the second driving module (4) is also provided with a second current resistor R2, and the second current resistor R2 is connected in series between the anode of the power supply module (1) and the third capacitor C3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321315900.6U CN219612076U (en) | 2023-05-26 | 2023-05-26 | LED color temperature regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321315900.6U CN219612076U (en) | 2023-05-26 | 2023-05-26 | LED color temperature regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219612076U true CN219612076U (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321315900.6U Active CN219612076U (en) | 2023-05-26 | 2023-05-26 | LED color temperature regulating circuit |
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|---|---|
| CN (1) | CN219612076U (en) |
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2023
- 2023-05-26 CN CN202321315900.6U patent/CN219612076U/en active Active
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