CN203206551U - Dimming device for touchscreen - Google Patents
Dimming device for touchscreen Download PDFInfo
- Publication number
- CN203206551U CN203206551U CN2013202035294U CN201320203529U CN203206551U CN 203206551 U CN203206551 U CN 203206551U CN 2013202035294 U CN2013202035294 U CN 2013202035294U CN 201320203529 U CN201320203529 U CN 201320203529U CN 203206551 U CN203206551 U CN 203206551U
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- China
- Prior art keywords
- circuit
- electrically connected
- current control
- control circuit
- constant
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- Expired - Fee Related
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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
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a dimming device for a touchscreen, and the dimming device comprises an EMC circuit, a rectifier bridge, a valley-fill PFC circuit, a first constant current control circuit, a feedback voltage circuit, a second constant current control circuit, a micro-control unit, and keys. The EMC circuit is electrically connected with the rectifier bridge which is electrically connected with the valley-fill PFC circuit. The valley-fill PFC circuit is electrically connected with the first constant current control circuit. A first metal-oxide semiconductor field-effect transistor is driven by the second constant current control circuit drives in high voltage to be electrically connected with the first constant current control circuit. The first constant current control circuit is electrically connected with the feedback voltage circuit. A second metal-oxide semiconductor field-effect transistor is driven by the micro control unit drives in low voltage to be electrically connected with the feedback voltage circuit. The micro-control unit is electrically connected with a touch control module. The dimming device is capable of realizing 6-step dimming by a micro control unit and adjusting the intensity of a light source to reach to required illumination.
Description
Technical field
The utility model relates to a kind of light modulating device, is specifically related to a kind of touch-screen light modulating device.
Background technology
Light modulating device is a kind of luminous flux of light source in the lighting device, electric device of adjusting illumination level of changing, and its basic principle is to change the current effective value of input light source to reach the purpose of light modulation.A kind of LED pulse-width dimmer is disclosed such as patent ZL200920234961.3, the discharge end of three or five timers connects a charge and discharge device, charge and discharge device one end connects with the resistance that is connected power positive end, the charge and discharge device other end connects first voltage comparator, be connected between charge and discharge device and the first voltage comparator by wire after the high level trigger end of three or five timers and the parallel connection of low level trigger end, the control voltage end of three or five timers is extreme by second voltage comparator power-, the output of three or five timers is connected with control valve one end of LED lamp, and the other end of LED lamp connects power positive end.This light modulating device does not have the function of sectional dimming.
The utility model content
In order to overcome the existing defective of above-mentioned prior art, the utility model provides a kind of touch-screen light modulating device, and this light modulating device has the sectional dimming function.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of touch-screen light modulating device, comprise the EMC circuit, rectifier bridge, the valley fill type pfc circuit, the number one constant-current control circuit, feedback voltage circuit, No. second constant-current control circuit, micro-control unit and button, described EMC circuit and rectifier bridge are by being electrically connected, described rectifier bridge and valley fill type pfc circuit are by being electrically connected, described valley fill type pfc circuit and number one constant-current control circuit are by being electrically connected, metal-oxide half field effect transistor of described No. second constant-current control circuit high drive is realized being connected with described number one constant-current control circuit, described number one constant-current control circuit and feedback voltage circuit are by being electrically connected, No. two metal-oxide half field effect transistors of described micro-control unit low-voltage driving and feedback voltage circuit realize being connected, and described micro-control unit and contact control module are for being electrically connected.
Described EMC circuit is connected with extraneous power supply, is provided with the resistance fuse in the circuit of connection.
Described rectifier bridge is the Half bridge rectifier bridge.
The beneficial effects of the utility model are, can realize six sections sectional dimming by micro-control unit, and more simply and easily control interface is provided, the convenient use, and the intensity of more easily regulating light source is to reach required illumination.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment:
Be easy to understand understanding in order to make technological means of the present utility model, creation characteristic and to reach purpose, further set forth the utility model below in conjunction with specific embodiment
As shown in Figure 1, a kind of touch-screen light modulating device described in the utility model comprises EMC circuit 1, rectifier bridge 2, valley fill type pfc circuit 3, number one constant-current control circuit 4, feedback voltage circuit 5, No. second constant-current control circuit 7, micro-control unit 9 and button 10, described EMC circuit 1 and rectifier bridge 2 are by being electrically connected, described rectifier bridge 2 and valley fill type pfc circuit 3 are by being electrically connected, described valley fill type pfc circuit 3 and number one constant-current control circuit 4 are by being electrically connected, metal-oxide half field effect transistor 6 of described No. second constant-current control circuit 7 high drive is realized being connected with described number one constant-current control circuit 4, described number one constant-current control circuit 4 and feedback voltage circuit 5 are by being electrically connected, No. two metal-oxide half field effect transistors 8 of described micro-control unit 9 low-voltage driving and feedback voltage circuit 5 realizes being connected, and described micro-control unit 9 and contact control module 10 are for being electrically connected.
Further, described EMC circuit 1 is connected with extraneous power supply, is provided with the resistance fuse in the circuit of connection.
Further, described rectifier bridge 2 is the Half bridge rectifier bridge.
When contact control module 10 detects the outside and changes, export a signal to micro-control unit 9, this signal of micro-control unit 9 real-time collecting changes the brightness of load according to this signal.
Above demonstration and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. touch-screen light modulating device, it is characterized in that: it comprises the EMC circuit, rectifier bridge, the valley fill type pfc circuit, the number one constant-current control circuit, feedback voltage circuit, No. second constant-current control circuit, micro-control unit and button, described EMC circuit and rectifier bridge are by being electrically connected, described rectifier bridge and valley fill type pfc circuit are by being electrically connected, described valley fill type pfc circuit and number one constant-current control circuit are by being electrically connected, metal-oxide half field effect transistor of described No. second constant-current control circuit high drive is realized being connected with described number one constant-current control circuit, described number one constant-current control circuit and feedback voltage circuit are by being electrically connected, No. two metal-oxide half field effect transistors of described micro-control unit low-voltage driving and feedback voltage circuit realize being connected, and described micro-control unit and contact control module are for being electrically connected.
2. described a kind of touch-screen light modulating device according to claim 1, it is characterized in that: described EMC circuit is connected with extraneous power supply, is provided with the resistance fuse in the circuit of connection.
3. described a kind of touch-screen light modulating device according to claim 1, it is characterized in that: described rectifier bridge is the Half bridge rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202035294U CN203206551U (en) | 2013-04-22 | 2013-04-22 | Dimming device for touchscreen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202035294U CN203206551U (en) | 2013-04-22 | 2013-04-22 | Dimming device for touchscreen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203206551U true CN203206551U (en) | 2013-09-18 |
Family
ID=49150600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202035294U Expired - Fee Related CN203206551U (en) | 2013-04-22 | 2013-04-22 | Dimming device for touchscreen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203206551U (en) |
-
2013
- 2013-04-22 CN CN2013202035294U patent/CN203206551U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140422 |