CN211184353U - 0-10V dimming circuit - Google Patents
0-10V dimming circuit Download PDFInfo
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- CN211184353U CN211184353U CN201922470543.0U CN201922470543U CN211184353U CN 211184353 U CN211184353 U CN 211184353U CN 201922470543 U CN201922470543 U CN 201922470543U CN 211184353 U CN211184353 U CN 211184353U
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- resistor
- operational amplifier
- resistance
- dimming
- circuit
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Abstract
The utility model discloses a 0-10V dimmer circuit, including resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1 and operational amplifier U1, resistance R4 and electric capacity C1 connect in parallel and form RC filter circuit, be connected with resistance R3 between resistance R4 and electric capacity C1, the other end of resistance R4 and electric capacity C1 all grounds, dimmer circuit's input is through resistance R3 and RC filter circuit connect operational amplifier U1's syntropy input, resistance R2 one end ground connection other end inserts operational amplifier U1's reverse input, operational amplifier U1's output V0 passes through resistance R1 forms the feedback and inserts operational amplifier U1's reverse input.
Description
Technical Field
The utility model belongs to the technical field of adjust luminance, especially, relate to a 0-10V dimming circuit.
Background
L the dimming technology of ED lamps has good guidance for the development of L ED lamps, at present, the dimming technology method of 0-10V L ED lamps is to dim the lamps by adjusting adjustable resistors, but the method is difficult to realize the expansibility and the intellectualization of the dimmer, cannot be applied to a microcontroller MCU which can only output digital signals, and is difficult to realize the integration and the intellectualization of the control mode.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model provides a 0-10V dimmer circuit has realized changing into analog level signal by the different PWM signal of duty cycle, has realized integrating and intellectuality of dimming control.
In order to achieve the above object, the utility model adopts the following technical scheme:
a 0-10V dimming circuit, comprising: the circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and an operational amplifier U1, wherein the resistor R4 and the capacitor C1 are connected in parallel to form an RC filter circuit, the resistor R3 is connected between the resistor R4 and the capacitor C1, and the other ends of the resistor R4 and the capacitor C1 are grounded; the input of the dimming circuit is connected with the same-direction input end of the operational amplifier U1 through the resistor R3 and an RC filter circuit, one end of the resistor R2 is grounded, the other end of the resistor R2 is connected to the reverse input end of the operational amplifier U1, and the output end V0 of the operational amplifier U1 forms feedback through the resistor R1 and is connected to the reverse input end of the operational amplifier U1.
Preferably, the input of the dimming circuit is a PWM dimming signal, and the output is a 0-10V analog level signal.
More preferably, the PWM dimming signal is controlled by a micro control unit MCU to generate a PWM signal, and the micro control unit MCU enables the output terminal V0 of the operational amplifier U1 to output a 0-10V analog level signal by regulating the duty ratio of the PWM signal.
Preferably, one pin of the operational amplifier U1 is connected to a 12V power supply, and the other pin is connected to ground.
Compared with the prior art, the beneficial effects of the utility model are that:
A0-10V dimmer circuit realized changing into analog level signal by the different PWM signal of duty cycle to can accomplish the effect of controlling L ED lamps and lanterns luminance through control PWM signal by miniature control unit MCU, realized dimming control integrate and intelligent.
Drawings
Fig. 1 is a circuit schematic diagram of a 0-10V dimming circuit according to the present invention.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further clarified below with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.
Examples
A 0-10V dimming circuit, comprising: the circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and an operational amplifier U1, wherein the resistor R4 and the capacitor C1 are connected in parallel to form an RC filter circuit, the resistor R3 is connected between the resistor R4 and the capacitor C1, and the other ends of the resistor R4 and the capacitor C1 are grounded; the input of the dimming circuit is connected with the same-direction input end of an operational amplifier U1 through a resistor R3 and an RC filter circuit, one end of a resistor R2 is grounded, the other end of the resistor R2 is connected to the reverse input end of the operational amplifier U1, and an output end V0 of the operational amplifier U1 forms feedback through a resistor R1 and is connected to the reverse input end of the operational amplifier U1. One pin of the operational amplifier U1 is connected to a 12V power supply and the other pin is connected to ground.
The input of the dimming circuit is a PWM dimming signal, and the output is a 0-10V analog level signal.
The PWM dimming signal is filtered into a direct current signal through an RC filter circuit consisting of a resistor R4 and a capacitor C1, the PWM dimming signal is controlled by a micro control unit MCU to generate the PWM signal, the micro control unit MCU enables an output end V0 of an operational amplifier U1 to output a 0-10V analog level signal by regulating the duty ratio of the PWM signal, and the micro control unit MCU can realize integration and intellectualization of dimming of L ED lamps.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A 0-10V dimming circuit, comprising: the circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and an operational amplifier U1, wherein the resistor R4 and the capacitor C1 are connected in parallel to form an RC filter circuit, the resistor R3 is connected between the resistor R4 and the capacitor C1, and the other ends of the resistor R4 and the capacitor C1 are grounded; the input of the dimming circuit is connected with the same-direction input end of the operational amplifier U1 through the resistor R3 and the RC filter circuit, one end of the resistor R2 is grounded, the other end of the resistor R2 is connected with the reverse input end of the operational amplifier U1, and the output end V of the operational amplifier U10A feedback is formed through the resistor R1 into the inverting input of the operational amplifier U1.
2. A 0-10V dimming circuit according to claim 1, wherein the input of the dimming circuit is a PWM dimming signal and the output is a 0-10V analog level signal.
3. The 0-10V dimming circuit according to claim 2, wherein the PWM dimming signal is controlled by a Micro Control Unit (MCU) to generate the PWM signal, and the Micro Control Unit (MCU) controls the duty ratio of the PWM signal to enable the output end V of the operational amplifier U1 to be at the output end V0And outputting a 0-10V analog level signal.
4. The 0-10V dimming circuit of claim 1, wherein one pin of the operational amplifier U1 is connected to a 12V power supply, and the other pin is connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922470543.0U CN211184353U (en) | 2019-12-31 | 2019-12-31 | 0-10V dimming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922470543.0U CN211184353U (en) | 2019-12-31 | 2019-12-31 | 0-10V dimming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211184353U true CN211184353U (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922470543.0U Active CN211184353U (en) | 2019-12-31 | 2019-12-31 | 0-10V dimming circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN211184353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113923818A (en) * | 2021-08-24 | 2022-01-11 | 杭州博联智能科技股份有限公司 | Analog dimmer and control method thereof |
-
2019
- 2019-12-31 CN CN201922470543.0U patent/CN211184353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113923818A (en) * | 2021-08-24 | 2022-01-11 | 杭州博联智能科技股份有限公司 | Analog dimmer and control method thereof |
| CN113923818B (en) * | 2021-08-24 | 2024-02-06 | 杭州博联智能科技股份有限公司 | Analog dimmer and control method thereof |
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