CN103781258B - Light adjusting circuit and use the illumination control apparatus of this light adjusting circuit - Google Patents
Light adjusting circuit and use the illumination control apparatus of this light adjusting circuit Download PDFInfo
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- CN103781258B CN103781258B CN201410061798.0A CN201410061798A CN103781258B CN 103781258 B CN103781258 B CN 103781258B CN 201410061798 A CN201410061798 A CN 201410061798A CN 103781258 B CN103781258 B CN 103781258B
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Abstract
A kind of light adjusting circuit, comprise the first gate-controlled switch, the control signal input be connected with the control end of the first gate-controlled switch, the first link, resistance R1, the second link, the second gate-controlled switch, the other two ends of the first gate-controlled switch are connected with the first link respectively, and are connected with the second link by resistance R1.The control end of the second gate-controlled switch is connected with the second link by resistance R1, and two ends are connected with the first link and the second link respectively in addition.The present invention also provides a kind of illumination control apparatus using light adjusting circuit.The chopping signal that controller generates controls the ON time of less first gate-controlled switch of rated power, thus control connection changes in the brightness of the illuminating lamp of the second link.When the voltage being carried in the control end of the second gate-controlled switch reaches its conducting voltage, the second gate-controlled switch conducting that rated power is larger becomes the path of alternating current, thus meets the high-power of illuminating lamp and small-power work requirements.
Description
Technical field
The present invention relates to electronic circuit field, particularly a kind of light adjusting circuit and use the illumination control apparatus of this light adjusting circuit.
Background technology
Light adjusting circuit in traditional illumination control apparatus adopts controllable silicon to regulate the brightness of lamp usually, controls silicon controlled control end to adjust silicon controlled ON time, thus realize the adjustment of lamp brightness by chopping signal.But with regard to single controllable silicon, its operating current and maintain the value of electric current and fix, or comparatively large, or less, therefore can not compatible high-power and low power lamp simultaneously, and versatility is poor.
Summary of the invention
Based on this, be necessary the illumination control apparatus good light adjusting circuit of a kind of versatility being provided and using this light adjusting circuit.
A kind of light adjusting circuit, comprising: the first gate-controlled switch, control signal input, the first link, resistance R1, the second link, the second gate-controlled switch,
The control end of described first gate-controlled switch is connected with described control signal input, and the other two ends of described first gate-controlled switch are connected with described first link respectively, and is connected with described second link by described resistance R1;
The control end of described second gate-controlled switch is also connected with described second link by described resistance R1, and the other two ends of described second gate-controlled switch are connected with described first link and described second link respectively;
The rated power of described first gate-controlled switch is less than the rated power of described second gate-controlled switch.
In one of them embodiment, described first gate-controlled switch is bidirectional triode thyristor T1,
The anode of described bidirectional triode thyristor T1 is connected with described first link respectively with negative electrode and is connected with described second link by described resistance R1, and the control end of described bidirectional triode thyristor T1 is connected with described control signal input.
In one of them embodiment, described first gate-controlled switch comprises rectifier bridge D1 and the 3rd gate-controlled switch,
An ac input end of described rectifier bridge D1 is connected with described first link, another ac input end of described rectifier bridge D1 is connected with described second link by described resistance R1, described control signal input is connected with the control end of described 3rd gate-controlled switch, and the direct current positive output end of described rectifier bridge D1 and direct current negative output terminal are connected with the other two ends of described 3rd gate-controlled switch respectively.
In one of them embodiment, described 3rd gate-controlled switch is the one in field effect transistor, one-way SCR, triode, insulated gate bipolar transistor.
In one of them embodiment, described second gate-controlled switch comprises rectifier bridge D2 and unidirectional controllable silicon S CR,
Two ac input ends of described rectifier bridge D2 are connected with described first link and described second link respectively, the control end of described unidirectional controllable silicon S CR is connected with described second link by described resistance R1, and the direct current positive output end of described rectifier bridge D2 and direct current negative output terminal are connected with the anode of described unidirectional controllable silicon S CR and negative electrode respectively.
In one of them embodiment, also comprise resistance R2, described first gate-controlled switch is connected with described first link by described resistance R2.
A kind of illumination control apparatus, comprise the light adjusting circuit in any one embodiment above-mentioned, also comprise controller, described controller is connected with described control signal input, and described controller controls for generating and exporting the chopping signal that described first gate-controlled switch carries out conducting.
The described chopping signal that described controller generates controls the ON time of less described first gate-controlled switch of rated power, thus can control connection change in the brightness of the illuminating lamp of described first link or described second link.The electric current flowing through described first gate-controlled switch flows through described resistance R1 simultaneously, when the voltage drop on described resistance R1 reaches the trigger voltage of the control end of described second gate-controlled switch, the described second gate-controlled switch conducting that rated power is larger the path described first link is connected with described second link for alternating current, thus meet the high-power of described illuminating lamp and small-power work requirements.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the light adjusting circuit of a preferred embodiment of the present invention;
A kind of physical circuit figure that Fig. 2 is the light adjusting circuit shown in Fig. 1;
The another kind of physical circuit figure that Fig. 3 is the light adjusting circuit shown in Fig. 1;
Another physical circuit figure that Fig. 4 is the light adjusting circuit shown in Fig. 1;
Fig. 5 is the structural representation of the illumination control apparatus connection illuminating lamp of a preferred embodiment of the present invention.
Embodiment
Refer to Fig. 1 and Fig. 5, Fig. 1 is the functional block diagram of the light adjusting circuit 10 of a preferred embodiment of the present invention, comprising: the first gate-controlled switch 100, control signal input 200, first link 300, resistance R1, the second link 400, second gate-controlled switch 500.
First gate-controlled switch 100 comprises three links, the control end of the first gate-controlled switch 100 is connected with control signal input 200, the other two ends of the first gate-controlled switch 100 are connected with the first link 300 respectively, and being connected with the second link 400 by resistance R1.Second gate-controlled switch 500 also comprises three links, and the control end of the second gate-controlled switch 500 is connected with the second link 400 by resistance R1, and the other two ends of the second gate-controlled switch 500 are connected with the first link 300 and the second link 400 respectively.
First gate-controlled switch 100 carries out conducting for the signal of telecommunication of responsive control signal input 200, and the second gate-controlled switch 500 carries out conducting for responding the voltage that resistance R1 generates.
Concrete, the second gate-controlled switch 500 conducting when the alternating current flowing through resistance R1 two ends is preset value can be regulated by the resistance of selected resistance R1.
The rated power of the first gate-controlled switch 100 is less than the rated power of the second gate-controlled switch 500.
The operation principle of light adjusting circuit 10 is as follows:
First be the first link 300 and the second link 400 incoming transport electricity, under initial condition, the first gate-controlled switch 100 and the second gate-controlled switch 500 are in off-state.
Continue to export chopping signal by control signal input 200, control the first gate-controlled switch 100 ON time.When the first gate-controlled switch 100 conducting, alternating current is circulated between the first link 300 and the second link 400 by the first gate-controlled switch 100 and resistance R1.When the alternating current flowing through the first gate-controlled switch 100 is less, the alternating current flowing through resistance R1 is not enough to be converted into the voltage that can make the second gate-controlled switch 500 conducting.Now the alternating current of the first link 300 and the second link 400 is circulated by lower the first gate-controlled switch 100 of rated power and resistance R1.When the first gate-controlled switch 100 is the bidirectional triode thyristor T1 shown in Fig. 2 or Fig. 4, and when flowing through the alternating current zero crossing of the first gate-controlled switch 100, the first gate-controlled switch 500 disconnects automatically.When the first gate-controlled switch 100 is for the rectifier bridge D1 shown in Fig. 3 and the 3rd gate-controlled switch 110, controls the first gate-controlled switch 100 by control signal input 200 and disconnect, thus achieve constantly conducting and the disconnection of the first gate-controlled switch 100.
After described chopping signal changes or is connected to the power change of illuminating lamp 700 of the first link 300 or the second link 400, and when the alternating current flowing through resistance R1 is enough converted into the voltage that can make the second gate-controlled switch 500 conducting, second gate-controlled switch 500 conducting, alternating current is circulated between the first link 300 and the second link 400 by the second gate-controlled switch 500 that rated power is larger.When flowing through the alternating current zero crossing of the second gate-controlled switch 500, the second gate-controlled switch 500 disconnects automatically, thus achieves constantly conducting and the disconnection of the second gate-controlled switch 500.
Described chopping signal controls the ON time of the first gate-controlled switch 100, ON time is different, the electric current then flowing through the first gate-controlled switch 100 is just different, thus make to flow through by the first link 300 electric current that first gate-controlled switch 100 and resistance R1 arrive the second link 400 and can be regulated by described chopping signal and do corresponding change, and then there is bright change secretly in the brightness realizing being connected to the illuminating lamp 700 of the first link 300 or the second link 200.Because the first gate-controlled switch 100 and the second gate-controlled switch 500 have respective rated power and the restriction of minimum power, if first gate-controlled switch 100 work actual power compare its rated power larger time, easily damage is caused to the first gate-controlled switch 100, in the present embodiment, because the rated power of the second gate-controlled switch 500 is larger than the rated power of the first gate-controlled switch 100, when the illuminating lamp 700 be connected on outward on the first link 300 or the second link 400 needs high power work, just the second gate-controlled switch 500 can be made to be in the operating state of conducting by the voltage be carried on resistance R1, if when the power of the outer illuminating lamp 700 be connected on the first link 300 or the second link 400 is less than the minimum power of the second gate-controlled switch 500, larger the second gate-controlled switch 500 of rated power can not reliable ON operation, now by the first gate-controlled switch 100 ON operation that rated power is less, thus the simultaneously compatible high-power and small-power work requirements of illuminating lamp, versatility is better.
More optimize, described light adjusting circuit 10 also comprises in resistance R2(Fig. 1 and not showing), first gate-controlled switch 100 is connected with the first link 300 by resistance R2, resistance R2 plays metering function, prevents the electric current of the control end flowing through the second gate-controlled switch 500 excessive and causes damage to the second gate-controlled switch 500.
Refer to Fig. 2, its physical circuit figure being the light adjusting circuit 10 shown in Fig. 1, first gate-controlled switch 100 is bidirectional triode thyristor T1, second gate-controlled switch 500 is bidirectional triode thyristor T2, the control end of bidirectional triode thyristor T1 is connected with control signal input 200, the anode of bidirectional triode thyristor T1 is connected with the first link 300 respectively with negative electrode, and being connected with the second link 400 by resistance R1.The control end of bidirectional triode thyristor T2 is connected with the second link 400 by resistance R1, and the anode of bidirectional triode thyristor T2 is connected with the first link 300 and the second link 400 respectively with negative electrode.The operation principle of circuit shown in Fig. 2 as previously mentioned.
Refer to Fig. 3, its another physical circuit figure being the light adjusting circuit 10 shown in Fig. 1, compared with the circuit diagram of the light adjusting circuit 10 shown in Fig. 2, bidirectional triode thyristor T1 in Fig. 2 is replaced with rectifier bridge D1 and the 3rd gate-controlled switch 110 by Fig. 3, and wherein the 3rd gate-controlled switch 110 is field effect transistor Q1.In other embodiments, the 3rd gate-controlled switch 110 also can be the one in one-way SCR, triode, insulated gate bipolar transistor.First link 300 is connected with an ac input end of rectifier bridge D1, another ac input end of rectifier bridge D1 is connected with the second link 400 by resistance R1, the direct current positive output end of rectifier bridge D1 is connected with the drain electrode of field effect transistor Q1, the direct current negative output terminal of rectifier bridge D1 is connected with the source electrode of field effect transistor Q1, and control signal input 200 is connected with the grid of field effect transistor Q1.
Rectifier bridge D1 is used for alternating current to be converted between the drain electrode of direct current scene effect pipe Q1 and source electrode to circulate, and the chopping signal that control signal input 200 exports carries out conducting for the drain electrode and source electrode controlling field effect transistor Q1.
Refer to Fig. 4, its another physical circuit figure being the light adjusting circuit 10 shown in Fig. 1, compared with the circuit diagram of the light adjusting circuit 10 shown in Fig. 2, bidirectional triode thyristor T2 in Fig. 2 is replaced with rectifier bridge D2 and unidirectional controllable silicon S CR by Fig. 4.Two of described rectifier bridge D2 exchange negative input end and are connected with the first link 300 and the second link 400 respectively, the direct current positive output end of rectifier bridge D2 is connected with the anode of unidirectional controllable silicon S CR, the direct current negative output terminal of rectifier bridge D2 is connected with the negative electrode of unidirectional controllable silicon S CR, and the control end of unidirectional controllable silicon S CR is by being connected with the second link 400 with resistance R1.
Please again consult Fig. 5, it is the structural representation that the illumination control apparatus 20 of invention one preferred embodiment connects illuminating lamp 700, comprises aforementioned light adjusting circuit 10 and controller 600.Wherein, illuminating lamp 700 is connected between the second link 400 and zero line input 800, and controller 600 is connected with control signal input 200.In the present embodiment, the first link 300 is live wire input.Controller 600 is for generating and exporting the chopping signal that control first gate-controlled switch 400 carries out conducting.In other embodiment, illuminating lamp 700 also can be connected with the first link 300.
The chopping signal that controller 600 generates controls the ON time of rated power less first gate-controlled switch 100, thus can control connection change in the brightness of the illuminating lamp 700 of the first link 300 or the second link 400.When the voltage being carried in the control end of the second gate-controlled switch 500 reaches its conducting voltage, the second gate-controlled switch 500 conducting that rated power is larger the path the first link 300 is connected with the second link 400 for alternating current, thus meet the high-power of illuminating lamp 700 and small-power work requirements.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (7)
1. a light adjusting circuit, is characterized in that, comprising: the first gate-controlled switch, control signal input, the first link, resistance R1, the second link, the second gate-controlled switch,
The control end of described first gate-controlled switch is connected with described control signal input, and the other two ends of described first gate-controlled switch are connected with described first link respectively, and is connected with described second link by described resistance R1;
The control end of described second gate-controlled switch is also connected with described second link by described resistance R1, and the other two ends of described second gate-controlled switch are connected with described first link and described second link respectively;
The rated power of described first gate-controlled switch is less than the rated power of described second gate-controlled switch.
2. light adjusting circuit according to claim 1, is characterized in that, described first gate-controlled switch is bidirectional triode thyristor T1,
The anode of described bidirectional triode thyristor T1 is connected with described first link respectively with negative electrode and is connected with described second link by described resistance R1, and the control end of described bidirectional triode thyristor T1 is connected with described control signal input.
3. light adjusting circuit according to claim 1, is characterized in that, described first gate-controlled switch comprises rectifier bridge D1 and the 3rd gate-controlled switch,
An ac input end of described rectifier bridge D1 is connected with described first link, another ac input end of described rectifier bridge D1 is connected with described second link by described resistance R1, described control signal input is connected with the control end of described 3rd gate-controlled switch, and the direct current positive output end of described rectifier bridge D1 and direct current negative output terminal are connected with the other two ends of described 3rd gate-controlled switch respectively.
4. light adjusting circuit according to claim 3, is characterized in that, described 3rd gate-controlled switch is the one in field effect transistor, one-way SCR, triode, insulated gate bipolar transistor.
5. light adjusting circuit according to claim 1, is characterized in that, described second gate-controlled switch comprises rectifier bridge D2 and unidirectional controllable silicon S CR,
Two ac input ends of described rectifier bridge D2 are connected with described first link and described second link respectively, the control end of described unidirectional controllable silicon S CR is connected with described second link by described resistance R1, and the direct current positive output end of described rectifier bridge D2 and direct current negative output terminal are connected with the anode of described unidirectional controllable silicon S CR and negative electrode respectively.
6. light adjusting circuit according to claim 1, is characterized in that, also comprises resistance R2, and described first gate-controlled switch is connected with described first link by described resistance R2.
7. an illumination control apparatus, it is characterized in that, comprise the light adjusting circuit described in claim 1-6 any one, also comprise controller, described controller is connected with described control signal input, and described controller controls for generating and exporting the chopping signal that described first gate-controlled switch carries out conducting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410061798.0A CN103781258B (en) | 2014-02-24 | 2014-02-24 | Light adjusting circuit and use the illumination control apparatus of this light adjusting circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410061798.0A CN103781258B (en) | 2014-02-24 | 2014-02-24 | Light adjusting circuit and use the illumination control apparatus of this light adjusting circuit |
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| CN103781258A CN103781258A (en) | 2014-05-07 |
| CN103781258B true CN103781258B (en) | 2015-09-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023041825A1 (en) * | 2021-09-14 | 2023-03-23 | Universidad De Sevilla | Static ac switch with extended current range |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180136A1 (en) * | 2014-05-30 | 2015-12-03 | 王晓元 | Dimming switch and dimming method therefor |
| CN105356762A (en) * | 2015-10-27 | 2016-02-24 | 杭州中恒派威电源有限公司 | Bilateral switch switch-over single-phase and three-phase power supply and communication device and control method thereof |
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| JPS63172138A (en) * | 1987-01-09 | 1988-07-15 | West Electric Co Ltd | Automatic dimming stroboscope device |
| US5668496A (en) * | 1994-05-05 | 1997-09-16 | Braun Aktiengesellschaft | Circuit arrangement for limiting the current to be switched of an electrical load |
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| CN103781258A (en) | 2014-05-07 |
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Effective date of registration: 20160516 Address after: Hui Tai Industrial Zone and East five road 516000 in Guangdong province Huizhou City Zhongkai high tech Zone No. 10 building two floor C block Patentee after: Huizhou Mo Stewart chisho Technology Co. Ltd. Address before: No. 63 building B Hui Taiwan Industrial Zone 516000 in Guangdong province Huizhou City Zhongkai high tech Zone Patentee before: Peng Yun |