An LED control circuit combining dial voltage regulation and knob dimming

Abstract

The present invention discloses an LED control circuit combining a dial voltage regulation and a knob dimming, comprising a voltage stabilizing input module, an LED driving module, a knob dimming module, and a dial switch circuit, wherein the LED driving module is electrically connected to the voltage stabilizing input module, the knob dimming module, and the dial switch circuit respectively, the voltage stabilizing input module is electrically connected to the knob dimming module and the dial switch circuit respectively, and the knob dimming module is electrically connected to the dial switch circuit. The output frequency of the present invention is determined by the dialing of each dial switch in the dial switch circuit, and each dial switch determines an output frequency. After the output frequency is determined, the size of the variable resistor is changed by the potentiometer in the knob dimming circuit, so that the output current under the determined output frequency can be adjusted, thereby adjusting the luminous brightness of the LED under the determined output frequency.

Description

Technical Field

[0001] The invention belongs to the technical field of LED lighting, and in particular relates to an LED control circuit combining a dial voltage regulator and a knob dimming regulator. Background Art

[0002] The dimming effect of LED requires the support of LED driving circuit to operate. The LED driving circuit is designed according to the user's usage requirements to achieve the purpose of adjusting the LED lighting effect. With the development of LED technology, the use of dip switches to control the dimming mode of LED has a good application effect and is widely used in LED driving circuits. It mainly determines the output frequency of the driving circuit by dialing, so as to achieve the purpose of adjusting the LED lighting effect. However, the existing dip-type LED driving circuit has certain limitations. It can only control the luminous brightness of the LED according to the set frequency. For example, when setting the distributed frequencies of 500Hz, 2000Hz, 3000Hz, etc., the dial key of each frequency can only correspond to one brightness, and it cannot be arbitrarily changed between these set frequency values ​​to adjust the luminous brightness of the LED. If it is necessary to increase the adjustable luminous brightness, the settable frequency can only be increased by setting a dip switch with a large number of dip keys. Summary of the invention

[0003] The object of the present invention is to provide an LED control circuit combining a dial voltage adjustment and a knob dimming to solve the problems raised in the above background technology.

[0004] The technical solution adopted by this invention to achieve the above-mentioned purpose is:

[0005] A LED control circuit combining a dial voltage regulation and a knob dimming, comprising a voltage stabilizing input module, an LED driving module, a knob dimming module, and a dial switch circuit, wherein the LED driving module is electrically connected to the voltage stabilizing input module, the knob dimming module, and the dial switch circuit respectively, the voltage stabilizing input module is electrically connected to the knob dimming module and the dial switch circuit respectively, and the knob dimming module is electrically connected to the dial switch circuit; the LED driving module comprises a driving chip IC1, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a transistor QR, an LED, an RXD port, and a TXD port, the driving chip IC1 has eight pins, and the driving chip The first pin of the chip IC1 is connected to the RXD port, the second pin of the driving chip IC1 is connected to the TXD port, the third pin of the driving chip IC1 is electrically connected to the output end of the fourth resistor R4 and the input end of the third resistor R3 respectively, the output end of the third resistor R3 is electrically connected to the base of the transistor QR, the input end of the fourth resistor R4 is electrically connected to the eighth pin of the driving chip IC1, the fourth pin of the driving chip IC1 is grounded GND, the sixth pin of the driving chip IC1 is electrically connected to the input end of the fifth resistor R5, the output end of the fifth resistor R5 is electrically connected to the positive electrode of the LED, and the negative electrode of the LED is grounded.

[0006] It is further explained that the voltage stabilizing input module includes a three-terminal voltage stabilizing chip IC2, a unidirectional diode D1, a first capacitor C1, and a second capacitor C2. The positive electrode of the unidirectional diode D1 is electrically connected to a power supply, the negative electrode of the unidirectional diode D1 is electrically connected to the input end of the three-terminal voltage stabilizing chip IC2, and the output end of the three-terminal voltage stabilizing chip IC2 is electrically connected to the input ends of the first capacitor C1, the second capacitor C2, and the fourth resistor R4, respectively. The output ends of the first capacitor C1 and the second capacitor C2 are grounded, the ground end of the three-terminal voltage stabilizing chip IC2 is grounded, and the output end of the three-terminal voltage stabilizing chip IC2 is connected to the eighth pin of the driver chip IC1.

[0007] It is further explained that the knob dimming module consists of a knob potentiometer SW1, a first resistor R1, and a second resistor R2. The output end of the first resistor R1 is electrically connected to the input end of the knob potentiometer SW1, and the output end of the knob potentiometer SW1 is electrically connected to the input end of the second resistor R2 and the seventh pin of the driver chip IC1, respectively. The output end of the second resistor R2 is grounded.

[0008] It is further explained that the dip switch circuit includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 to an Nth resistor, and dip switches S1, S2, S3, S4 to Sn, where n≥5, and N=n+4; the output ends of the dip switches S1 to Sn are all connected to the ground line, the input end of the sixth resistor R6 is all electrically connected to the fifth pin of the driving chip IC1, the input end of the dip switch S1 is electrically connected to the input end of the sixth resistor R6, the input end of the dip switch S2 is electrically connected to the output end of the sixth resistor R6 and the input end of the seventh resistor R7 respectively, the input end of the dip switch S3 is electrically connected to the output end of the seventh resistor R7 and the input end of the eighth resistor R8, the input end of the dip switch S4 is electrically connected to the output end of the eighth resistor R8, and the input end of the dip switch Sn is electrically connected to the output end of the Nth resistor RN.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The output frequency of the present invention is determined by the dialing of each dial switch in the dial switch circuit. Each dial switch determines an output frequency. After the output frequency is determined, the size of the variable resistor is changed by the potentiometer in the knob dimming circuit, so that the output current at the determined output frequency can be adjusted, thereby adjusting the luminous brightness of the LED at the determined output frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the connection structure of the present invention;

[0013] Among them: M1, voltage stabilizing input module; M2, LED driving module; M3, knob dimming module; M4, DIP switch circuit. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1 , the present invention provides the following technical solutions:

[0016] A LED control circuit combining a dial voltage regulation and a knob dimming, comprising a voltage stabilizing input module M1, an LED driving module M2, a knob dimming module M3, and a dial switch circuit M4, wherein the LED driving module M2 is electrically connected to the voltage stabilizing input module M1, the knob dimming module M3, and the dial switch circuit M4, respectively; the voltage stabilizing input module M1 is electrically connected to the knob dimming module M3 and the dial switch circuit M4, respectively; the knob dimming module M3 is electrically connected to the dial switch circuit M4; the LED driving module M2 comprises a driving chip IC1, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a transistor QR, an LED, an RXD port, and a TXD port; the driving chip IC1 has eight pins, and the driving chip IC1 has The first pin is connected to the RXD port, the second pin of the driver chip IC1 is connected to the TXD port, the RXD port and the TXD port are connected to the communication module, the third pin of the driver chip IC1 is electrically connected to the output end of the fourth resistor R4 and the input end of the third resistor R3 respectively, the output end of the third resistor R3 is electrically connected to the base of the transistor QR, the collector of the transistor QR can be connected to another LED or a single-chip computer, the input end of the fourth resistor R4 is electrically connected to the eighth pin of the driver chip IC1, the fourth pin of the driver chip IC1 is connected to the ground wire GND, the sixth pin of the driver chip IC1 is electrically connected to the input end of the fifth resistor R5, the output end of the fifth resistor R5 is electrically connected to the positive electrode of the LED, and the negative electrode of the LED is connected to the ground wire.

[0017] The voltage stabilizing input module M1 includes a three-terminal voltage stabilizing chip IC2, a unidirectional diode D1, a first capacitor C1, and a second capacitor C2. The three-terminal voltage stabilizing chip IC2 adopts a 78M05 three-terminal voltage stabilizing chip. The positive pole of the unidirectional diode D1 is electrically connected to a power supply, and the negative pole of the unidirectional diode D1 is electrically connected to the input end of the three-terminal voltage stabilizing chip IC2. The output end of the three-terminal voltage stabilizing chip IC2 is electrically connected to the input ends of the first capacitor C1, the second capacitor C2, and the fourth resistor R4, respectively. The output ends of the first capacitor C1 and the second capacitor C2 are grounded, and the ground end of the three-terminal voltage stabilizing chip IC2 is grounded. The output end of the three-terminal voltage stabilizing chip IC2 is connected to the eighth pin of the driver chip IC1; the three-terminal voltage stabilizing chip IC2 adopts an HD808 chip, and the voltage output by the power supply provides a rated voltage for the LED control circuit via the voltage stabilizing input module M1.

[0018] The knob dimming module M3 consists of a knob potentiometer SW1, a first resistor R1, and a second resistor R2. The output end of the first resistor R1 is electrically connected to the input end of the knob potentiometer SW1, and the output end of the knob potentiometer SW1 is electrically connected to the input end of the second resistor R2 and the seventh pin of the driver chip IC1 respectively. The output end of the second resistor R2 is grounded.

[0019] The dip switch circuit M4 includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 to an Nth resistor, and dip switches S1, S2, S3, S4 to Sn, where n≥5, and N=n+4; the output ends of the dip switches S1 to Sn are all connected to the ground line, the input ends of the sixth resistor R6 are all electrically connected to the fifth pin of the driving chip IC1, the input end of the dip switch S1 is electrically connected to the input end of the sixth resistor R6, the input end of the dip switch S2 is electrically connected to the output end of the sixth resistor R6 and the input end of the seventh resistor R7 respectively, the input end of the dip switch S3 is electrically connected to the output end of the seventh resistor R7 and the input end of the eighth resistor R8, the input end of the dip switch S4 is electrically connected to the output end of the eighth resistor R8, and the input end of the dip switch Sn is electrically connected to the output end of the Nth resistor RN.

[0020] Set the output frequency corresponding to S4 to 500Hz, set the output frequency corresponding to S3 to 2000Hz, set the output frequency corresponding to S2 to 4000Hz, and set the output frequency corresponding to S1 to 8000Hz.

[0021] In one embodiment, the driver chip IC1 is set to send a continuous voltage to the LED or transistor. When S1 is turned on, the LED emits a high-brightness light, the transistor sends a maximum signal, and the output frequency at 8000Hz can be adjusted by the knob potentiometer SW1, thereby adjusting the brightness of the LED at an output frequency of 4000Hz to 8000Hz; when S2 is turned on, the LED emits a higher-brightness light, the transistor sends a larger signal, and the output frequency at 4000Hz can be adjusted by the knob potentiometer SW1, thereby adjusting the brightness of the LED at an output frequency of 200Hz to 8000Hz. The brightness at the output frequency of 0Hz to 4000Hz; when S3 is dialed, the LED emits a lower brightness light, the transistor emits a smaller signal, and the output frequency at 2000Hz can be adjusted through the knob potentiometer SW1, thereby adjusting the brightness of the LED at an output frequency of 500Hz to 2000Hz; when S4 is dialed, the LED emits a low brightness light, the transistor emits the smallest signal, and the output frequency at 500Hz can be adjusted through the knob potentiometer SW1, thereby adjusting the brightness of the LED at an output frequency of 0Hz to 500Hz.

[0022] In one embodiment, the driver chip IC1 is set to send an intermittent output voltage to the LED or the transistor. When the S4 dial is set, the driver chip IC1 sends a working current to the LED or the transistor once, when the S3 dial is set, the driver chip IC1 sends a working current to the LED or the transistor twice, when the S2 dial is set, the driver chip IC1 sends a working current to the LED or the transistor three times, and when the S1 dial is set, the driver chip IC1 sends a working current to the LED or the transistor four times, so that in practice: when the 500Hz dial is selected, the LED flashes once, when the 2000Hz dial is selected, the LED flashes twice, when the 4000Hz dial is selected, the LED flashes three times, and when the 8000Hz dial is selected, the LED flashes four times.

[0023] The output frequency of the present invention is determined by the dialing of each dial switch in the dial switch circuit M4. Each dial switch determines an output frequency. After the output frequency is determined, the size of the variable resistor is changed by the potentiometer in the knob dimming circuit, so that the output current at the determined output frequency can be adjusted, thereby adjusting the luminous brightness of the LED at the determined output frequency.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An LED control circuit combining a dial voltage regulator and a knob dimming, characterized in that: It includes a voltage-stabilizing input module, an LED driving module, a knob dimming module, and a dial switch circuit. The LED driving module is electrically connected to the voltage-stabilizing input module, the knob dimming module, and the dial switch circuit respectively. The voltage-stabilizing input module is electrically connected to the knob dimming module and the dial switch circuit respectively. The knob dimming module is electrically connected to the dial switch circuit. The LED driving module includes a driving chip IC1, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a transistor QR, an LED, an RXD port, and a TXD port. The driving chip IC1 has eight pins. The first pin of the driving chip IC1 The RXD port is connected, the second pin of the driver chip IC1 is connected to the TXD port, the third pin of the driver chip IC1 is electrically connected to the output end of the fourth resistor R4 and the input end of the third resistor R3 respectively, the output end of the third resistor R3 is electrically connected to the base of the transistor QR, the input end of the fourth resistor R4 is electrically connected to the eighth pin of the driver chip IC1, the fourth pin of the driver chip IC1 is grounded to GND, the sixth pin of the driver chip IC1 is electrically connected to the input end of the fifth resistor R5, the output end of the fifth resistor R5 is electrically connected to the positive electrode of the LED, and the negative electrode of the LED is electrically connected to the positive electrode of the LED. The knob dimming module is composed of a knob potentiometer SW1, a first resistor R1, and a second resistor R2. The output end of the first resistor R1 is electrically connected to the input end of the knob potentiometer SW1. The output end of the knob potentiometer SW1 is electrically connected to the input end of the second resistor R2 and the seventh pin of the driver chip IC1 respectively. The output end of the second resistor R2 is grounded. The LED control circuit of the combination of a dial voltage regulation and a knob dimming, the dial switch circuit includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 to an Nth resistor, and dial switches S1, S2, S3, S4 to Sn, wherein n≥5, and N=n+4; the output ends of the dip switches S1 to Sn are all connected to the ground line, the input ends of the sixth resistor R6 are all electrically connected to the fifth pin of the driving chip IC1, the input end of the dip switch S1 is electrically connected to the input end of the sixth resistor R6, the input end of the dip switch S2 is electrically connected to the output end of the sixth resistor R6 and the input end of the seventh resistor R7 respectively, the input end of the dip switch S3 is electrically connected to the output end of the seventh resistor R7 and the input end of the eighth resistor R8, the input end of the dip switch S4 is electrically connected to the output end of the eighth resistor R8, and the input end of the dip switch Sn is electrically connected to the output end of the Nth resistor RN.

2. The LED control circuit combining a dial voltage regulator and a knob dimming according to claim 1, characterized in that: The voltage stabilization input module includes a three-terminal voltage stabilization chip IC2, a unidirectional diode D1, a first capacitor C1, and a second capacitor C2. The positive electrode of the unidirectional diode D1 is electrically connected to a power supply, the negative electrode of the unidirectional diode D1 is electrically connected to the input end of the three-terminal voltage regulator chip IC2, and the output end of the three-terminal voltage regulator chip IC2 is electrically connected to the input ends of the first capacitor C1, the second capacitor C2, and the fourth resistor R4. The input end is electrically connected, the output ends of the first capacitor C1 and the second capacitor C2 are grounded, the ground end of the three-terminal voltage regulator chip IC2 is grounded, and the output end of the three-terminal voltage regulator chip IC2 is connected to the eighth pin of the driver chip IC1.

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