CN214338168U - Dimming and color mixing circuit - Google Patents
Dimming and color mixing circuit Download PDFInfo
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- CN214338168U CN214338168U CN202023286806.1U CN202023286806U CN214338168U CN 214338168 U CN214338168 U CN 214338168U CN 202023286806 U CN202023286806 U CN 202023286806U CN 214338168 U CN214338168 U CN 214338168U
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Abstract
The utility model relates to a mixing of colors circuit of adjusting luminance, by the voltage stabilizing circuit who connects input voltage, the control circuit who connects signal generator constitutes, change its resistance value through adjusting adjustable resistance eleven, can change DIM1 and DIM 2's ratio under the constant power, ratio grow as DIM1 and DIM2, the luminance grow of LED lamp under signal generator's control, ratio when DIM1 foot and DIM2 foot diminishes, the luminance of LED lamp diminishes under signal generator's control. The utility model discloses an adjustable resistance and comparator LM358 circuit realize that the LED lamp adjusts luminance under the constant power mixing of colors, and control mode is simple and clear, compares the single chip microcomputer circuit, avoids the design cost, effectively reduces the use cost of LED lamp.
Description
Technical Field
The utility model relates to a mixing of colors circuit of adjusting luminance mainly is applicable to the mixing of colors of adjusting luminance of all kinds of LED illumination lamps and lanterns.
Background
The LED lamp is a cheap and popular lighting lamp, the scheme of constant-power dimming and color mixing of the LED lamp on the market at present is mostly realized by adopting a single chip microcomputer, and the use of the single chip microcomputer means that programming design is needed, so that the labor cost is increased. In addition, the dimming and color mixing circuits realized by the single chip microcomputer need to be additionally supplied with power to the single chip microcomputer, which means that the circuits need to consume more energy during working and the use cost is higher.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome exist among the above-mentioned prior art not enough to a mixing of colors circuit adjusts luminance is provided.
The utility model provides a technical scheme that its technical problem adopted is:
a light and color adjusting circuit comprises a voltage stabilizing circuit connected with an input voltage and a control circuit connected with a signal generator, wherein the control circuit comprises a comparator, a first capacitor, a second capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a tenth resistor and an eleventh adjustable resistor, a VCC pin, a seventh resistor end and an eleventh resistor end of the comparator are connected with a positive electrode output of the voltage stabilizing circuit, a GND pin, a negative electrode output of the voltage stabilizing circuit and a fourth resistor end of the comparator are grounded, the four other resistor end and the seventh resistor end are connected with a 2IN + pin of the comparator, a 2OUT pin, a six resistor end and an eight resistor end of the comparator are connected with a DIM1 pin, the six resistor end and the five resistor end are connected with a 2 IN-pin of the comparator, the eight resistor end is connected with a first capacitor end, the one capacitor end, the eleventh capacitor end and the two capacitor end are grounded, the ten resistor end and the two capacitor end are connected with a second capacitor end, The other end of the eleven adjustable resistors and the other end of the five adjustable resistors are connected with a DIM2 pin.
Preferably, the voltage stabilizing circuit is composed of a first resistor, a second resistor, a third resistor and a TL431, wherein one end of the first resistor is connected with the input voltage, the other end of the first resistor and one end of the second resistor are connected with the negative electrode of the TL431, the positive electrode of the TL431 is connected with one end of the third resistor, and the other end of the second resistor and the other end of the third resistor are connected with the control electrode of the TL 431.
Preferably, the comparator is LM 358.
Compared with the prior art, the utility model, have following advantage and effect: the LED lamp is dimmed and color-adjusted under constant power through the adjustable resistor and the LM358 circuit of the comparator, and the control mode is simple and clear; compared with a single chip microcomputer circuit, the design cost is avoided, and the use cost of the LED lamp is further reduced.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the present invention.
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of examples, which are illustrative of the present application and are not limited to the following examples.
Examples
As shown in fig. 1, the present embodiment is composed of a voltage regulator circuit connected to an input voltage, and a control circuit connected to a signal generator. The voltage stabilizing circuit comprises a first resistor R1, a second resistor R2, a third resistor R3 and a TL431, wherein one end of the first resistor R1 is connected with input voltage, the other end of the first resistor R1 and one end of the second resistor R2 are connected with the negative electrode of the TL431, the positive electrode of the TL431 is connected with one end of a third resistor R3, and the other end of the second resistor R2 and the other end of the third resistor R3 are connected with the control electrode of the TL 431. The voltage stabilizing circuit is arranged to be used for stabilizing the output voltage, and the TL431 used can provide the output voltage more accurately.
The control circuit comprises an LM358, a capacitor I C1, a capacitor II C2, a resistor IV R4, a resistor IV R5, a resistor IV R6, a resistor IV R7, a resistor IV R8, a resistor IV R10 and an adjustable resistor IV R11, wherein a VCC pin of the LM358, one end of the resistor IV R7 and one end of the resistor IV R10 are connected with the positive output of a voltage stabilizing circuit, a GND pin of the LM358, the negative output of the voltage stabilizing circuit and one end of the resistor IV R4 are grounded, the other end of the resistor IV 4 and the other end of the resistor IV R7 are connected with a 2IN + pin of the LM358, the other end of the resistor IV R6 and one end of the resistor IV R5 are connected with a 2 IN-pin of the LM358, and the other end of the resistor IV R8 is connected with one end of the capacitor IV R1. The 2OUT pin of the LM358, one end of a six-R6 resistor and one end of an eight-R8 resistor are connected with the DIM1 pin of the signal generator, the other end of a first capacitor C1, one end of an eleven-R11 adjustable resistor and one end of a second capacitor C2 are grounded, and the other end of a tenth-R10 resistor, the other end of a second capacitor C2 adjustable resistor eleven-R11 and the other end of a five-R5 resistor are connected with the DIM2 pin of the signal generator.
In this embodiment, the resistance of the first resistor R1 is 10K, the resistance of the second resistor R2 is 68K, the resistance of the third resistor R3 is 100K, the resistance of the fourth resistor R4 is 68K, the resistance of the fifth resistor R5 is 510K, the resistance of the sixth resistor R6 is 510K, the resistance of the seventh resistor R7 is 100K, the resistance of the eighth resistor R8 is 100K, the resistance of the tenth resistor R10 is 10K, the resistance of the eleventh adjustable resistor R11 is 0-100K, the capacitance of the first capacitor C1 is 10uF, and the capacitance of the second capacitor C2 is 10 uF. The set of values is only one of the sets of values implemented by the circuit.
The duty ratio of the DIM1 pin and the DIM2 pin is constantly equal to 1, the resistance value of the adjustable resistor eleven R11 is adjusted to change the ratio of the DIM1 to the DIM2 under constant power, specifically, after the resistance value of the adjustable resistor is increased, the ratio of the DIM1 to the DIM2 is increased, and the brightness of the LED lamp is increased under the control of the signal generator; when the resistance value of the adjustable resistor is reduced, the ratio of the DIM1 pin to the DIM2 pin is reduced, and the brightness of the LED lamp is reduced under the control of the signal generator.
The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. A light and color adjusting circuit is characterized by comprising a voltage stabilizing circuit connected with an input voltage and a control circuit connected with a signal generator, wherein the control circuit comprises a comparator, a capacitor I, a capacitor II, a resistor IV, a resistor V, a resistor VI, a resistor VII, a resistor eight, a resistor eleven and an adjustable resistor eleven, a VCC pin, one end and one end of the resistor eleven of the comparator are connected with the positive electrode output of the voltage stabilizing circuit, a GND pin, the negative electrode output of the voltage stabilizing circuit and one end of the resistor IV of the comparator are grounded, the other end of the resistor IV and the other end of the resistor VII are connected with a 2IN + pin of the comparator, a 2OUT pin, one end and one end of the resistor VI and one end of the resistor Ba are connected with a DIM1 pin, the other end of the resistor VI and the one end of the resistor V are connected with the 2 IN-pin of the comparator, the other end of the resistor VIII is connected with the capacitor I, the other end of the capacitor I, one end of the adjustable resistor eleven and one end of the capacitor, and one end of the capacitor II are grounded, and the other end of the resistor eleven are connected with a DIM1 pin, The other end of the capacitor II, the other end of the adjustable resistor eleven and the other end of the resistor five are connected with a DIM2 pin.
2. The dimming and toning circuit of claim 1, wherein: the voltage stabilizing circuit is composed of a first resistor, a second resistor, a third resistor and a TL431, wherein one end of the first resistor is connected with an input voltage, the other end of the first resistor and one end of the second resistor are connected with the negative electrode of the TL431, the positive electrode of the TL431 is connected with one end of the third resistor, and the other end of the second resistor and the other end of the third resistor are connected with the control electrode of the TL 431.
3. The dimming and toning circuit of claim 1, wherein: the comparator is LM 358.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023286806.1U CN214338168U (en) | 2020-12-31 | 2020-12-31 | Dimming and color mixing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023286806.1U CN214338168U (en) | 2020-12-31 | 2020-12-31 | Dimming and color mixing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214338168U true CN214338168U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023286806.1U Active CN214338168U (en) | 2020-12-31 | 2020-12-31 | Dimming and color mixing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214338168U (en) |
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2020
- 2020-12-31 CN CN202023286806.1U patent/CN214338168U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 315400 no.cn8, Far East Industrial City, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Yaotai Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 315400 no.cn8, Far East Industrial City, Yuyao City, Ningbo City, Zhejiang Province Patentee before: Ningbo UTEC Electric Co.,Ltd. Country or region before: China |