CN201893969U - Virtual load circuit of silicon controlled dimming circuit used for LED indoor illumination - Google Patents
Virtual load circuit of silicon controlled dimming circuit used for LED indoor illumination Download PDFInfo
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- CN201893969U CN201893969U CN2010206067604U CN201020606760U CN201893969U CN 201893969 U CN201893969 U CN 201893969U CN 2010206067604 U CN2010206067604 U CN 2010206067604U CN 201020606760 U CN201020606760 U CN 201020606760U CN 201893969 U CN201893969 U CN 201893969U
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Abstract
The utility model discloses a silicon controlled dimming circuit used for LED indoor illumination. The silicon controlled dimming circuit comprises an AC input module, a silicon controlled dimmer, a rectifying module and a CC (Constant Current) module, wherein the AC input module is firstly inputted to an AC commercial power, then outputted to the rectifying module via the silicon controlled dimmer, and finally outputted to the CC module after being rectified by the rectifying module; and the CC module is used for driving an LED lamp. The silicon controlled dimming circuit further comprises a virtual load module connected on the output end of the rectifying module. In the virtual load circuit, the virtual load module is connected on the output end of the rectifying module and is combined via a special virtual load circuit, so that the electricity maintenance problem of the silicon controller dimmer is solved, the silicon controlled dimmer is prevented from being repeatedly turned off or on due to insufficient maintenance current, and the flickering of the LED lamp resulted from the silicon controlled dimmer is further solved.
Description
Technical field
The utility model discloses a kind of dummy load circuit that is used for controllable silicon light modulation, particularly a kind of dummy load circuit that is used for the controllable silicon light modulation of LED room lighting.
Background technology
Along with the maturation day by day of LED lighting technology, LED is widely used in the daily life as illuminating device.And the daily room lighting of people needs to regulate its brightness of illumination usually.Controllable silicon has advantages such as self pressure drop is little, low in energy consumption, is widely used on the room lighting product, is used for illuminating product is carried out the usefulness of light modulation.But traditional controllable silicon dimmer mainly designs at incandescent lamp, and incandescent lamp is pure resistive load, but the LED lamp is a capacitive load, and is the Switching Power Supply by PWM modulation, at the controllable silicon loaded work piece in the HF switch state.So when this controllable silicon dimmer directly uses as the LED light organ, controllable silicon dimmer promptly is operated under a kind of abnormal condition, when utilizing it that LED lamp is carried out light modulation, can cause light flash and visual frequency jitter phenomenon, influence the use of LED lamp.
Summary of the invention
At above-mentioned mention of the prior art when utilizing controllable silicon dimmer that the LED lamp is carried out light modulation, can produce phenomenons such as light flash and vision frequency jitter, the utility model provides a kind of controllable silicon light modulation circuit of the LED of being used for room lighting, it is connected with the dummy load module on the output of rectification module, be used to solve silicon controlled and keep the not enough problem of electric current, avoided controllable silicon with the switching frequency of power supply high speed turn-off and the shortcoming opened repeatedly, and in conjunction with SCR brightness adjustment control logical block, adopt Digital Signal Processing, filtering, shift frequency, technology such as linear expansion and compensation, thereby solved the flicker problem of LED lamp, can realize linearity light adjusting from 1%-100%.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of dummy load circuit of controllable silicon light modulation of the LED of being used for room lighting, comprise AC input module, controllable silicon dimmer, rectification module and constant flow module, behind the electric main input AC input module through exporting rectification module behind the controllable silicon dimmer to, after the rectification module rectification, export to constant flow module, by constant flow module driving LED lamp, also include the dummy load module in the light adjusting circuit, the dummy load module is connected on the output of rectification module.
The technical scheme that its technical problem that solves the utility model adopts further comprises:
Also include SCR brightness adjustment control application of logic circuit module in the described dummy load circuit, the output of dummy load module connects on the SCR brightness adjustment control application of logic circuit module, and SCR brightness adjustment control application of logic circuit module exports constant flow module to.
Described dummy load module comprises resistance R 2, capacitor C 1, resistance R 1, voltage stabilizing didoe ZD1 and triode Q1, resistance R 2 is serially connected on the output line of rectification module, resistance R 1 that is connected in series and capacitor C 1 are connected across between the positive pole and negative pole of rectification module output, voltage stabilizing didoe ZD1 and capacitor C 1 are connected in parallel, the negative pole of voltage stabilizing didoe ZD1 is connected on the negative pole of rectification module output, the positive pole of voltage stabilizing didoe ZD1 is connected on the common port of resistance R 1 and capacitor C 1, the base stage of triode Q1 is connected on the common port of resistance R 1 and capacitor C 1, the emitter of triode Q1 is connected on the negative pole of rectification module output, and the collector electrode of triode Q1 is connected on the control input end of SCR brightness adjustment control application of logic circuit module.
Described resistance R 2 is serially connected on the negative pole output line of rectification module.
Described resistance R 1 and capacitor C 1 are connected the back level of resistance R 2.
Described triode Q1 is connected the back level of resistance R 1 and capacitor C 1.
Described rectification module is the bridge rectifier module.
Be connected with the EMI filtration module between described controllable silicon dimmer and the rectification module.
Described constant flow module comprises switch converters and constant current output circuit.
The beneficial effects of the utility model are: be connected with the dummy load module in the utility model on the output of rectification module, by special dummy load circuit module combination, solved the current problems of safeguarding of controllable silicon dimmer, make controllable silicon dimmer can not turn-off startup again inadequately repeatedly, further solved the scintillation of the LED lamp that causes owing to controllable silicon dimmer because of keeping electric current.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or approximate with basic structure, all within the utility model protection range.
Please referring to accompanying drawing 1 and accompanying drawing 2, the utility model mainly comprises the AC input module, controllable silicon dimmer, rectification module, SCR brightness adjustment control application of logic circuit module and constant flow module, electric main input AC input module, in the present embodiment, the AC input module is mainly input interface, be used for being connected with electric main, be used for the civil power input, controllable silicon dimmer is connected on the civil power incoming line, civil power exports rectification module to through behind the controllable silicon dimmer, in the present embodiment, rectification module adopts bridge rectifier, after the rectification of bridge rectifier transformation, form DC power supply, export to SCR brightness adjustment control application of logic circuit module, input voltage is carried out exporting to constant flow module after digital sample and the logic control, by constant flow module output driving LED lamp through SCR brightness adjustment control application of logic circuit module, in the present embodiment, comprise switch converters and constant current output circuit in the constant flow module, be used for the power source conversion after the rectification is become constant-current source, be used for the driving LED lamp.In order to guarantee the out-put supply quality, in the utility model, also between controllable silicon dimmer and rectification module, be connected with the EMI filtration module, the EMI that is used for the filtering electric main disturbs.In the utility model, also include a dummy load module in the light adjusting circuit, the dummy load module is connected on the output of rectification module.In the present embodiment, rectification module output comprises two circuits, i.e. an anodal output line and a negative pole output line.Please referring to frame of broken lines part in the accompanying drawing 2, dummy load module in the present embodiment comprises resistance R 2, capacitor C 1, resistance R 1, voltage stabilizing didoe ZD1 and triode Q1, resistance R 2 is serially connected on the output line of rectification module, in the present embodiment, resistance R 2 is serially connected on the negative pole output line of rectification module, resistance R 1 that is connected in series and capacitor C 1 are connected across between the positive pole and negative pole of rectification module output, voltage stabilizing didoe ZD1 and capacitor C 1 are connected in parallel, the negative pole of voltage stabilizing didoe ZD1 is connected on the negative pole of rectification module output, the positive pole of voltage stabilizing didoe ZD1 is connected on the common port of resistance R 1 and capacitor C 1, in the present embodiment, the base stage of triode Q1 is connected on the common port of resistance R 1 and capacitor C 1, the emitter of triode Q1 is connected on the negative pole of rectification module output, and the collector electrode of triode Q1 is connected on the control input end of SCR brightness adjustment control application of logic circuit module.Wherein, resistance R 1 and capacitor C 1 are connected the back level of resistance R 2, and triode Q1 is connected the back level of resistance R 1 and capacitor C 1.
On the output of rectification module, be connected with the dummy load module in the utility model, by special dummy load modular circuit combination, solved the current problems of safeguarding of controllable silicon dimmer, make controllable silicon dimmer can not turn-off startup again inadequately repeatedly because of keeping electric current, further solved the scintillation of the LED lamp that causes owing to controllable silicon dimmer, can realize linearity light adjusting from 1%-100%.
Claims (9)
1. dummy load circuit that is used for the controllable silicon light modulation of LED room lighting, comprise AC input module, controllable silicon dimmer, rectification module and constant flow module, behind the electric main input AC input module through exporting rectification module behind the controllable silicon dimmer to, after the rectification module rectification, export to constant flow module, by constant flow module driving LED lamp, it is characterized in that: also include the dummy load module in the described light adjusting circuit, the dummy load module is connected on the output of rectification module.
2. the dummy load circuit that is used for the controllable silicon light modulation of LED room lighting according to claim 1, it is characterized in that: also include SCR brightness adjustment control application of logic circuit module in the described dummy load circuit, the output of dummy load module connects on the SCR brightness adjustment control application of logic circuit module, and SCR brightness adjustment control application of logic circuit module exports constant flow module to.
3. the dummy load circuit that is used for the controllable silicon light modulation of LED room lighting according to claim 2, it is characterized in that: described dummy load module comprises resistance R 2, capacitor C 1, resistance R 1, voltage stabilizing didoe ZD1 and triode Q1, resistance R 2 is serially connected on the output line of rectification module, resistance R 1 that is connected in series and capacitor C 1 are connected across between the positive pole and negative pole of rectification module output, voltage stabilizing didoe ZD1 and capacitor C 1 are connected in parallel, the negative pole of voltage stabilizing didoe ZD1 is connected on the negative pole of rectification module output, the positive pole of voltage stabilizing didoe ZD1 is connected on the common port of resistance R 1 and capacitor C 1, the base stage of triode Q1 is connected on the common port of resistance R 1 and capacitor C 1, the emitter of triode Q1 is connected on the negative pole of rectification module output, and the collector electrode of triode Q1 is connected on the control input end of SCR brightness adjustment control application of logic circuit module.
4. the dummy load circuit that is used for the controllable silicon light modulation of LED room lighting according to claim 3 is characterized in that: described resistance R 2 is serially connected on the negative pole output line of rectification module.
5. the dummy load circuit that is used for the controllable silicon light modulation of LED room lighting according to claim 4 is characterized in that: described resistance R 1 and capacitor C 1 are connected the back level of resistance R 2.
6. according to claim 3 or the 4 described dummy load circuit that are used for the controllable silicon light modulation of LED room lighting, it is characterized in that: described triode Q1 is connected the back level of resistance R 1 and capacitor C 1.
7. according to any described dummy load circuit that is used for the controllable silicon light modulation of LED room lighting in the claim 1 to 5, it is characterized in that: described rectification module is the bridge rectifier module.
8. according to any described dummy load circuit that is used for the controllable silicon light modulation of LED room lighting in the claim 1 to 5, it is characterized in that: be connected with the EMI filtration module between described controllable silicon dimmer and the rectification module.
9. according to any described dummy load circuit that is used for the controllable silicon light modulation of LED room lighting in the claim 1 to 5, it is characterized in that: described constant flow module comprises switch converters and constant current output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206067604U CN201893969U (en) | 2010-11-15 | 2010-11-15 | Virtual load circuit of silicon controlled dimming circuit used for LED indoor illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206067604U CN201893969U (en) | 2010-11-15 | 2010-11-15 | Virtual load circuit of silicon controlled dimming circuit used for LED indoor illumination |
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| Publication Number | Publication Date |
|---|---|
| CN201893969U true CN201893969U (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206067604U Expired - Fee Related CN201893969U (en) | 2010-11-15 | 2010-11-15 | Virtual load circuit of silicon controlled dimming circuit used for LED indoor illumination |
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| CN (1) | CN201893969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911923A (en) * | 2017-11-16 | 2018-04-13 | 欧普照明股份有限公司 | The light modulation output method and light adjusting controller of light adjusting controller |
-
2010
- 2010-11-15 CN CN2010206067604U patent/CN201893969U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911923A (en) * | 2017-11-16 | 2018-04-13 | 欧普照明股份有限公司 | The light modulation output method and light adjusting controller of light adjusting controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MOSO POWER SUPPLY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN MOSO POWER SUPPLY TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee after: MOSO Power Supply Technology Co., Ltd. Address before: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee before: Shenzhen MoSo Power Supply Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |