CN219248131U - Touch silicon controlled rectifier light modulator - Google Patents
Touch silicon controlled rectifier light modulator Download PDFInfo
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- CN219248131U CN219248131U CN202223513232.6U CN202223513232U CN219248131U CN 219248131 U CN219248131 U CN 219248131U CN 202223513232 U CN202223513232 U CN 202223513232U CN 219248131 U CN219248131 U CN 219248131U
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- circuit
- mcu
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- optocoupler
- alternating current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses a touch silicon controlled rectifier dimmer which comprises an alternating current input circuit, an EMC circuit, a transformer step-down isolation circuit, an output filter circuit, a 12V constant voltage output circuit, an MCU power supply circuit and an MCU circuit, wherein the alternating current input circuit is connected with the input end of the MCU power supply circuit; the alternating current input circuit filters electromagnetic interference through the EMC circuit, the transformer step-down isolation circuit, the output filter circuit is used for filtering, the output filter circuit is used for isolating high voltage and low voltage, the 12V constant voltage output circuit and the MCU power supply circuit are used for supplying power to the MCU circuit; the input end of the MCU circuit is connected with a key circuit, the output end of the MCU circuit is connected with a bidirectional thyristor control circuit, an input filter circuit is connected between the bidirectional thyristor control circuit and an alternating current input circuit, and the output end of the bidirectional thyristor control circuit is connected with an output circuit. The utility model adopts the singlechip to generate PWM signals to control the optocoupler dimming circuit, thereby controlling the conduction angle of the bidirectional controllable silicon to control the dimming amount, leading the circuit to have no minimum maintaining current and leading the dimming to be minimum.
Description
Technical Field
The utility model relates to the technical field of dimming, in particular to a touch silicon controlled rectifier dimmer.
Background
The traditional dimmer principle adjusts the power R through a mechanical switch, and controls the capacitor to reach the starting voltage of the silicon controlled rectifier, so that the voltage corner cut is controlled. However, such an operation mode has problems of low control precision, high device failure rate and the like, and a potentiometer and a thyristor front cut dimmer are adopted in the market at present, but have the problem of flickering in the dimming process.
Disclosure of Invention
The present utility model is directed to a touch thyristor dimmer, which solves the above-mentioned problems.
In order to solve the technical problems, the utility model provides the following technical scheme: a touch silicon controlled dimmer comprises an alternating current input circuit, an EMC circuit, a transformer step-down isolation circuit, an output filter circuit, a 12V constant voltage output circuit, an MCU power supply circuit and an MCU circuit;
the alternating current input circuit filters electromagnetic interference through the EMC circuit, the transformer step-down isolation circuit is used for isolating high voltage and low voltage, the output filter circuit is used for filtering, the 12V constant voltage output circuit and the MCU power supply circuit are used for supplying power to the MCU circuit;
the input end of the MCU circuit is connected with a key circuit, the output end of the MCU circuit is connected with a bidirectional thyristor control circuit, an input filter circuit is connected between the bidirectional thyristor control circuit and an alternating current input circuit, and the output end of the bidirectional thyristor control circuit is connected with an output circuit.
Further, an optocoupler dimming signal circuit is connected between the MCU circuit and the bidirectional thyristor control circuit, the optocoupler dimming signal circuit comprises an optocoupler U3, one end of a diode of the optocoupler U3 is connected with 5V voltage output by the rectifying circuit, the other end of the diode is connected with the MCU circuit, a triode C electrode of the optocoupler U3 is connected with a resistor R3 and a first end of a thyristor Q1, and a triode E electrode of the optocoupler U3 is connected to a second end of the thyristor Q1 through a resistor R2.
Further, the output filter circuit is connected with the reference constant voltage comparison control circuit, the optocoupler control circuit and the PWM control circuit and used for zero crossing detection.
Further, the transformer step-down isolation circuit adopts an EDR2509 transformer.
Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the combination of the singlechip and the silicon controlled rectifier, utilizes the mode of key touch to carry out dimming, avoids the problem of flicker in the dimming process, adopts the singlechip to generate PWM signals to control the optocoupler dimming circuit, further controls the conduction angle of the bidirectional silicon controlled rectifier to control the quantity of dimming, ensures that the circuit has no minimum maintenance current, and can achieve the minimum dimming.
Drawings
FIG. 1 is a block diagram of the overall principle of the utility model;
FIG. 2 is a schematic diagram of a circuit for connecting a singlechip with a silicon controlled rectifier;
FIG. 3 is a schematic diagram of the peripheral circuit of the power supply and isolation part of the singlechip of the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in the drawing, the device comprises an alternating current input circuit, an EMC circuit, a transformer step-down isolation circuit, an output filter circuit, a 12V constant voltage output circuit, an MCU power supply circuit and an MCU circuit;
the alternating current input circuit filters electromagnetic interference through the EMC circuit, the transformer step-down isolation circuit is used for isolating high voltage and low voltage, the output filter circuit is used for filtering, the 12V constant voltage output circuit and the MCU power supply circuit are used for supplying power to the MCU circuit;
the output filter circuit is connected with the reference constant voltage comparison control circuit, the optocoupler control circuit and the PWM control circuit, and the optocoupler is used for filtering isolation to isolate high voltage from low voltage.
The input end of the MCU circuit is connected with a key circuit, the output end of the MCU circuit is connected with a bidirectional thyristor control circuit, an input filter circuit is connected between the bidirectional thyristor control circuit and an alternating current input circuit, and the output end of the bidirectional thyristor control circuit is connected with an output circuit.
Referring to fig. 2, an optocoupler dimming signal circuit is connected between the MCU circuit and the bidirectional thyristor control circuit, the optocoupler dimming signal circuit includes an optocoupler U3, one end of a diode of the optocoupler U3 is connected with 5V voltage output by the rectifying circuit, the other end of the diode is connected with the MCU circuit, a triode C pole of the optocoupler U3 is connected with a resistor R3 and a first end of a thyristor Q1, and a triode E pole of the optocoupler U3 is connected to a second end of the thyristor Q1 through a resistor R2.
The utility model adopts the combination of the singlechip and the silicon controlled rectifier, utilizes the mode of key touch to carry out dimming, avoids the problem of flicker in the dimming process, adopts the singlechip to generate PWM signals to control the optocoupler dimming circuit so as to control the conduction angle of the bidirectional silicon controlled rectifier, controls the quantity of dimming, ensures that the circuit has no minimum maintenance current, can achieve the minimum dimming, and uses the singlechip to generate PWM signals to control the optocoupler dimming circuit so as to control the conduction angle of the bidirectional silicon controlled rectifier so as to control the quantity of dimming, ensures that the circuit has no minimum maintenance current, and can achieve the minimum dimming.
The above embodiments are preferred embodiments of the present utility model, and all similar structures and equivalent modifications are intended to fall within the scope of the present utility model.
Claims (4)
1. A touch thyristor dimmer, characterized by: the device comprises an alternating current input circuit, an EMC circuit, a transformer step-down isolation circuit, an output filter circuit, a 12V constant voltage output circuit, an MCU power supply circuit and an MCU circuit;
the alternating current input circuit filters electromagnetic interference through the EMC circuit, the transformer step-down isolation circuit, the output filter circuit is used for filtering, the output filter circuit is used for isolating high voltage and low voltage, the 12V constant voltage output circuit and the MCU power supply circuit are used for supplying power to the MCU circuit;
the input end of the MCU circuit is connected with a key circuit, the output end of the MCU circuit is connected with a bidirectional thyristor control circuit, an input filter circuit is connected between the bidirectional thyristor control circuit and an alternating current input circuit, and the output end of the bidirectional thyristor control circuit is connected with an output circuit.
2. A touch thyristor dimmer according to claim 1, wherein: an optocoupler dimming signal circuit is connected between the MCU circuit and the bidirectional thyristor control circuit, the optocoupler dimming signal circuit comprises an optocoupler U3, one end of a diode of the optocoupler U3 is connected with 5V voltage output by the rectifying circuit, the other end of the diode is connected with the MCU circuit, a triode C electrode of the optocoupler U3 is connected with a resistor R3 and a first end of a thyristor Q1, and a triode E electrode of the optocoupler U3 is connected to a second end of the thyristor Q1 through a resistor R2.
3. A touch thyristor dimmer according to claim 1, wherein: the output filter circuit is connected with the reference constant voltage comparison control circuit, the optocoupler control circuit and the PWM control circuit, and the optocoupler is used for filtering isolation.
4. A touch thyristor dimmer according to claim 1, wherein: the transformer step-down isolation circuit adopts an EDR2509 transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223513232.6U CN219248131U (en) | 2022-12-28 | 2022-12-28 | Touch silicon controlled rectifier light modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223513232.6U CN219248131U (en) | 2022-12-28 | 2022-12-28 | Touch silicon controlled rectifier light modulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219248131U true CN219248131U (en) | 2023-06-23 |
Family
ID=86805227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223513232.6U Active CN219248131U (en) | 2022-12-28 | 2022-12-28 | Touch silicon controlled rectifier light modulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219248131U (en) |
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2022
- 2022-12-28 CN CN202223513232.6U patent/CN219248131U/en active Active
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