CN103379689A - Voltage fluctuation suppression circuit and lamp - Google Patents
Voltage fluctuation suppression circuit and lamp Download PDFInfo
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- CN103379689A CN103379689A CN2012101326803A CN201210132680A CN103379689A CN 103379689 A CN103379689 A CN 103379689A CN 2012101326803 A CN2012101326803 A CN 2012101326803A CN 201210132680 A CN201210132680 A CN 201210132680A CN 103379689 A CN103379689 A CN 103379689A
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Abstract
The invention discloses a voltage fluctuation suppression circuit which is used for suppressing fluctuation of the input voltage of a work circuit. The voltage fluctuation suppression circuit comprises an inductive ballast, wherein an inductive coil of the inductive ballast is divided into a basic suppression section and a following suppression section which are connected in series, the following suppression section is connected with a short circuit control unit in parallel, the short circuit control unit detects the input voltage, the short circuit control unit enables the following suppression section to be connected with the basic suppression section in series when the input voltage is higher than a suppression voltage threshold value, and otherwise the following suppression section is made to be in a short circuit. The invention further discloses a lamp using the voltage fluctuation suppression circuit. The voltage fluctuation suppression circuit is connected with the concrete work circuit, when the input voltage changes, due to the fact that the length of the coil of the inductive ballast changes along with the input voltage, the inductance value of the inductive ballast changes correspondingly, and steady output power can be ensured. The service life of the lamp using the voltage fluctuation suppression circuit can be prolonged when the input power is steady.
Description
Technical field
The present invention relates to circuit protection, particularly relate to the light fixture that a kind of voltage fluctuation suppresses circuit and this voltage fluctuation inhibition circuit of a kind of application.
Background technology
Become large situation in order to tackle the voltage or the electric current that happen suddenly in the circuit, usually all can adopt some devices or circuit that voltage or the electric current of sudden change are suppressed to protect back-end circuit.Inductive ballast namely is wherein a kind of.Inductive ballast is the iron core that comprises in inductance coil and the insertion inductance coil, when the electric current in the inductance coil changes, then in inductance coil, cause the variation of magnetic flux, thereby produce induced electromotive force and induced current, faradic direction is opposite with the sense of current that causes induced electromotive force, thereby hamper curent change, can play certain inhibitory action.
Yet the inhibitory action of Inductive ballast is limited, and when input voltage fluctuation was larger, the power of output still can fluctuate larger, affects the use of back-end circuit.
Summary of the invention
Based on this, be necessary to provide a kind of and can guarantee that the voltage fluctuation of stable output power suppresses circuit.
In addition, also provide a kind of light fixture that above-mentioned voltage fluctuation suppresses circuit that comprises.
A kind of voltage fluctuation suppresses circuit, be used for the fluctuation of the input voltage of inhibition operating circuit, comprise Inductive ballast, the inductance coil of described Inductive ballast is divided into the basic inhibition section of series connection and follows and suppress section, described following suppressed section parallel connection short circuit control unit, described fault control unit inspection input voltage, and when described input voltage is higher than the inhibition voltage threshold, make the described inhibition section of following keep connecting with described basic inhibition section, on the contrary make the described inhibition section short circuit of following.
Therein among embodiment, the described quantity that suppresses section of following is two or more, and each described following is suppressed section described fault control unit in parallel, each described fault control unit makes the corresponding described inhibition section of following keep connecting with described basic inhibition section when input voltage is higher than corresponding inhibition voltage threshold, otherwise makes the corresponding described inhibition section short circuit of following.
Therein among embodiment, described following suppressed section and comprised at least that a high voltage is followed and suppress section and a low-voltage and follow and suppress section, and described fault control unit comprises following with described high voltage and suppresses section the first fault control unit in parallel and follow inhibition section second a fault control unit in parallel with described low-voltage;
When input voltage was lower than the first voltage threshold, the described high voltage of described the first fault control unit controls was followed and is suppressed the section short circuit, and the described low-voltage of described the second fault control unit controls is followed and suppressed the section short circuit;
When input voltage is higher than the second voltage threshold value, the described high voltage of described the first fault control unit controls is followed and is suppressed section and keep connect with described basic inhibitions section, and the described low-voltage of described the second fault control unit controls is followed and suppressed section to connect with a described basic inhibition section maintenance;
Input voltage is between described the first voltage threshold and second voltage threshold value the time, described the first fault control unit controls high voltage is followed the inhibition section and is kept connecting with described basic inhibition section, and described the second fault control unit controls low-voltage is followed and suppressed a section short circuit;
Described the first voltage threshold is less than the rated operational voltage of operating circuit, and the rated operational voltage of described operating circuit is less than the second voltage threshold value.
Among embodiment, described fault control unit comprises electromagnetic relay and voltage detector therein, and the moving contact of described electromagnetic relay and normally-closed contact are connected to follows the two ends that suppress section accordingly, and the normally opened contact of described electromagnetic relay is unsettled; Described voltage detector detects described input voltage, and controls coil electricity or the outage of described electromagnetic relay according to the relation of described input voltage and described inhibition voltage threshold.
Therein among embodiment, described voltage detector comprises rectifier bridge, the first electric capacity and voltage-stabiliser tube, described rectifier bridge is direct current output with the input voltage rectification, the coils from parallel connection of coils of described the first electric capacity and described electromagnetic relay is at the output of described rectifier bridge, described voltage-stabiliser tube is connected with the coil of described electromagnetic relay, and the negative electrode of described voltage-stabiliser tube is connected with the output head anode of described rectifier bridge.
Therein among embodiment, described output voltage two ends parallel filtering electric capacity.
A kind of light fixture comprises that light source, light source works circuit and above-mentioned voltage fluctuation suppress circuit, and described voltage fluctuation suppresses circuit for the fluctuation of the input voltage that suppresses described light source works circuit.
Above-mentioned voltage fluctuation suppresses circuit and is connected with concrete operating circuit, when input voltage changes, since the coil of Inductive ballast can because fault control so that length can be followed change in voltage, so the inductance value of Inductive ballast can corresponding changing, and can guarantee the stable of power output.Use the light fixture of this voltage fluctuation inhibition circuit because input power is stable, can guarantee useful life.
Description of drawings
Fig. 1 is the operational module figure that the voltage fluctuation of an embodiment suppresses circuit;
Fig. 2 is that the voltage fluctuation of an embodiment suppresses circuit theory diagrams.
Embodiment
As shown in Figure 1, be the operational module figure of the voltage fluctuation inhibition circuit of an embodiment.This voltage fluctuation suppresses circuit 10 connects with operating circuit 20, when fluctuation appears in input voltage this fluctuation is suppressed to reduce as far as possible this fluctuation to the impact of operating circuit 20.
Voltage fluctuation suppresses circuit 10 and comprises Inductive ballast 110 and fault control unit 120.The inductance coil of Inductive ballast 110 is divided into the basic inhibition section L1 of series connection and follows and suppress section L2, L3.In embodiment illustrated in fig. 1, following the quantity that suppresses section is 2 sections, is respectively L2 and L3.
Follow for every section and suppress section fault control unit 120 all in parallel, fault control unit 120 detects input voltage (not shown fault control unit is connected with input voltage), be higher than to make when suppressing voltage threshold to follow at input voltage and suppress section and keep connect with the basic section L1 that suppresses, follow an inhibition section short circuit otherwise make.
Among Fig. 1, follow and suppress section L2, L3 fault control unit 120 respectively in parallel.
With follow the fault control unit 120 that suppresses section L2 parallel connection and control to follow according to an inhibition voltage threshold V1 who sets in advance and suppress section L2 and keep connect or make and follow an inhibition section L2 short circuit with the basic section L1 that suppresses; With follow the fault control unit 120 that suppresses section L3 parallel connection and control to follow according to an inhibition voltage threshold V2 who sets in advance and suppress section L3 and keep connect or make and follow an inhibition section L3 short circuit with the basic section L1 that suppresses.
V1 is different from V2, and supposes that herein V1 is less than V2.
According to above-mentioned control principle,, to follow and suppress the equal short circuit of section L2, L3 during less than V1 (also less than V2) at input voltage, this moment, the length available of inductance coil of Inductive ballast 110 was the shortest.
At input voltage during greater than V1 and less than V2, follow and suppress section L2 and keep connect with the basic section L1 that suppresses, and follow an inhibition section L3 short circuit; The length available of the inductance coil of Inductive ballast 110 is moderate at this moment.
At input voltage during greater than V2 (also greater than V1), follow and suppress section L2, L3 and all suppress a section L1 maintenance and connect with basic; The length available of the inductance coil of Inductive ballast 110 is the longest at this moment.
Can see, when input voltage changes, because the loop length of Inductive ballast 110 can be followed variation, so corresponding changing of the inductance value of Inductive ballast 110 meeting, input voltage hour specifically, inductance value is little, when input voltage is large, inductance value is large, therefore can guarantee the stable of power output.
In a preferred embodiment, follow that to suppress a section L3 be that high voltage is followed and suppressed section, follow that to suppress a section L2 be that low-voltage is followed and suppressed section.Following an inhibition section fault control unit 120 in parallel with high voltage is the first fault control unit, and following an inhibition section fault control unit 120 in parallel with low-voltage is the second fault control unit.
Suppressing voltage threshold V1 is the first voltage threshold, and suppressing voltage threshold V2 is the second voltage threshold value.The first voltage threshold is less than the rated operational voltage of operating circuit, and the rated operational voltage of operating circuit is less than the second voltage threshold value.
When input voltage was lower than the first voltage threshold, described the first fault control unit controls high voltage was followed and is suppressed the section short circuit, and described the second fault control unit controls low-voltage is followed and suppressed the section short circuit.
When input voltage was higher than the second voltage threshold value, described the first fault control unit controls high voltage was followed and is suppressed section and keep connect with described basic inhibitions section, and described the second fault control unit controls low-voltage is followed and suppressed section to connect with a described basic inhibition section maintenance.
Input voltage is between described the first voltage threshold and second voltage threshold value the time, described the first fault control unit controls high voltage is followed the inhibition section and is kept connecting with described basic inhibition section, and described the second fault control unit controls low-voltage is followed and suppressed a section short circuit.
Make two voltage thresholds be distributed in the rated operational voltage both sides of operating circuit, can tackle the relative rated operational voltage of voltage and become respectively situation large or that diminish.
Be appreciated that in other embodiments following the quantity that suppresses section also can be for more than 3 section, multistage is followed the inhibition section and is connected with the basic section L1 that suppresses.Multistage control can realize that inductance is followed variation more accurately.
As shown in Figure 2, be the voltage fluctuation inhibition circuit theory diagrams of an embodiment.In the present embodiment, only suppress section and describe as example take one section extra following.Circuit shown in Figure 2 comprises that the voltage fluctuation of present embodiment suppresses circuit 30 and operating circuit 20.Voltage fluctuation suppresses circuit 30 and comprises Inductive ballast 310 and fault control unit 320.
Inductive ballast 310 comprises the basic inhibition section L4 of series connection and follows and suppress a section L5, and fault control unit 320 suppresses that section L5 is in parallel carries out fault control to it with following.
Fault control unit 320 comprises electromagnetic relay 321 and voltage detector 322.The moving contact of electromagnetic relay 321 and normally-closed contact are connected to follows the two ends that suppress section L5, and the normally opened contact of electromagnetic relay 321 is unsettled.Voltage detector 322 detects input voltages, and according to coil electricity or the outage of input voltage with the relation control electromagnetic relay 321 that suppresses voltage threshold, suppresses section L5 and suppresses a section L4 maintenance and connect or short circuit with basic thereby make respectively to follow.
Particularly, voltage detector 322 comprises rectifier bridge, the first capacitor C 2 and the voltage-stabiliser tube D5 that is formed by 4 diode D1, D2, D3, D4.Rectifier bridge is direct current output with the input voltage rectification, and this direct current output is corresponding with input voltage, and when namely input voltage became large, the strain of direct current output phase was large, when input voltage diminishes, and corresponding the diminishing of direct current output.
The coils from parallel connection of coils of the first capacitor C 2 and electromagnetic relay 321 is at the output of rectifier bridge, and voltage-stabiliser tube D5 connects with the coil of electromagnetic relay 321, and the negative electrode of voltage-stabiliser tube D5 is connected with the output head anode of rectifier bridge.
The input voltage two ends can also parallel filtering capacitor C 1.
Below with circuit diagram shown in Figure 2 explanation fault control principle.
The reverse breakdown voltage of voltage-stabiliser tube D5 is corresponding with the inhibition voltage threshold of fault control unit 320.Therefore when input voltage during greater than the inhibition voltage threshold, the voltage of rectifier bridge output is greater than the reverse breakdown voltage of voltage-stabiliser tube D5, voltage-stabiliser tube D5 is reversed puncture, the coil of electromagnetic relay 321 is switched on, then adhesive K switch 1, follow the short-circuit condition that suppresses section L5 and be disengaged, thereby keep connecting with basic inhibition section L4; When input voltage when suppressing voltage threshold, the voltage of rectifier bridge output is less than the reverse breakdown voltage of voltage-stabiliser tube D5, voltage-stabiliser tube D5 keeps blocking-up, the coil of electromagnetic relay 321 is failed energising, follows to suppress a section L5 and be in short-circuit condition.
Therefore can reach aforesaid voltage fluctuation inhibition by fault control.
Voltage fluctuation inhibition circuit 30 embodiment illustrated in fig. 2 also can comprise follow more and suppress section and corresponding electromagnetic relay, and adopts above-mentioned identical connected mode to carry out fault control, reaches the effect of Multistage Control.
Be appreciated that in other embodiments the fault control unit further adopts other modes to realize, Single-chip Controlling for example, and be not limited to the electromagnetic relay control of previous embodiment.
The light fixture of one embodiment comprises that light source, light source works circuit and above-mentioned voltage fluctuation suppress circuit.The light source works circuit provides operating voltage for light source, and voltage fluctuation suppresses circuit connects with the light source works circuit, and the fluctuation of input voltage is suppressed.Because suppressing circuit, voltage fluctuation can guarantee the stable of power output, the useful life that therefore can improve light source.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.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 voltage fluctuation suppresses circuit, be used for the fluctuation of the input voltage of inhibition operating circuit, comprise Inductive ballast, it is characterized in that, the inductance coil of described Inductive ballast is divided into the basic inhibition section of series connection and follows and suppress section, described following suppressed section parallel connection short circuit control unit, described fault control unit inspection input voltage, and when described input voltage is higher than the inhibition voltage threshold, make the described inhibition section of following keep connecting with described basic inhibition section, otherwise make the described inhibition section short circuit of following.
2. voltage fluctuation according to claim 1 suppresses circuit, it is characterized in that, the described quantity that suppresses section of following is two or more, and each described following is suppressed section described fault control unit in parallel, each described fault control unit makes the corresponding described inhibition section of following keep connecting with described basic inhibition section when input voltage is higher than corresponding inhibition voltage threshold, otherwise makes the corresponding described inhibition section short circuit of following.
3. voltage fluctuation according to claim 1 suppresses circuit, it is characterized in that, described following suppressed section and comprised at least that a high voltage is followed and suppress section and a low-voltage and follow and suppress section, and described fault control unit comprises following with described high voltage and suppresses section the first fault control unit in parallel and follow inhibition section second a fault control unit in parallel with described low-voltage;
When input voltage was lower than the first voltage threshold, the described high voltage of described the first fault control unit controls was followed and is suppressed the section short circuit, and the described low-voltage of described the second fault control unit controls is followed and suppressed the section short circuit;
When input voltage is higher than the second voltage threshold value, the described high voltage of described the first fault control unit controls is followed and is suppressed section and keep connect with described basic inhibitions section, and the described low-voltage of described the second fault control unit controls is followed and suppressed section to connect with a described basic inhibition section maintenance;
Input voltage is between described the first voltage threshold and second voltage threshold value the time, the described high voltage of described the first fault control unit controls is followed the inhibition section and is kept connecting with described basic inhibition section, and the described low-voltage of described the second fault control unit controls is followed and suppressed a section short circuit;
Described the first voltage threshold is less than the rated operational voltage of operating circuit, and the rated operational voltage of described operating circuit is less than the second voltage threshold value.
4. according to claim 1 to 3 each described voltage fluctuations inhibition circuit, it is characterized in that, described fault control unit comprises electromagnetic relay and voltage detector, the moving contact of described electromagnetic relay and normally-closed contact are connected to follows the two ends that suppress section accordingly, and the normally opened contact of described electromagnetic relay is unsettled; Described voltage detector detects described input voltage, and controls coil electricity or the outage of described electromagnetic relay according to the relation of described input voltage and described inhibition voltage threshold.
5. voltage fluctuation according to claim 4 suppresses circuit, it is characterized in that, described voltage detector comprises rectifier bridge, the first electric capacity and voltage-stabiliser tube, described rectifier bridge is direct current output with the input voltage rectification, the coils from parallel connection of coils of described the first electric capacity and described electromagnetic relay is at the output of described rectifier bridge, described voltage-stabiliser tube is connected with the coil of described electromagnetic relay, and the negative electrode of described voltage-stabiliser tube is connected with the output head anode of described rectifier bridge.
6. voltage fluctuation according to claim 5 suppresses circuit, it is characterized in that described output voltage two ends parallel filtering electric capacity.
7. a light fixture comprises light source and light source works circuit, it is characterized in that, comprises that also each described voltage fluctuation suppresses circuit such as claim 1 to 6, and described voltage fluctuation suppresses circuit for the fluctuation of the input voltage that suppresses described light source works circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210132680.3A CN103379689B (en) | 2012-04-28 | 2012-04-28 | Voltage fluctuation suppression circuit and light fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210132680.3A CN103379689B (en) | 2012-04-28 | 2012-04-28 | Voltage fluctuation suppression circuit and light fixture |
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| Publication Number | Publication Date |
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| CN103379689A true CN103379689A (en) | 2013-10-30 |
| CN103379689B CN103379689B (en) | 2016-04-27 |
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| CN201210132680.3A Active CN103379689B (en) | 2012-04-28 | 2012-04-28 | Voltage fluctuation suppression circuit and light fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016082298A1 (en) * | 2014-11-24 | 2016-06-02 | 李顺华 | Ballasted led lamp drive power supply with variable power and energy saving |
| CN114096050A (en) * | 2021-10-13 | 2022-02-25 | 深圳市奥金瑞科技有限公司 | Novel lighting switch system based on Bluetooth wireless ad hoc network technology |
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| US20030076075A1 (en) * | 2001-10-17 | 2003-04-24 | Ma Thomas Lai Wai | Control system and method for voltage stabilization in electric power system |
| CN201063943Y (en) * | 2007-04-05 | 2008-05-21 | 吴江市华峰电子有限公司 | Dual-power automatic switchover type high-strength air discharge lamp (HID) ballast |
| CN201854033U (en) * | 2010-05-12 | 2011-06-01 | 安丰防雷科技股份有限公司 | Serial connection type surging suppression optimized structure |
| CN102290874A (en) * | 2011-08-22 | 2011-12-21 | 重庆大学 | Power regulating circuit of non-contact type energy transmission system and control method thereof |
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2012
- 2012-04-28 CN CN201210132680.3A patent/CN103379689B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030076075A1 (en) * | 2001-10-17 | 2003-04-24 | Ma Thomas Lai Wai | Control system and method for voltage stabilization in electric power system |
| CN201063943Y (en) * | 2007-04-05 | 2008-05-21 | 吴江市华峰电子有限公司 | Dual-power automatic switchover type high-strength air discharge lamp (HID) ballast |
| CN201854033U (en) * | 2010-05-12 | 2011-06-01 | 安丰防雷科技股份有限公司 | Serial connection type surging suppression optimized structure |
| CN102290874A (en) * | 2011-08-22 | 2011-12-21 | 重庆大学 | Power regulating circuit of non-contact type energy transmission system and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016082298A1 (en) * | 2014-11-24 | 2016-06-02 | 李顺华 | Ballasted led lamp drive power supply with variable power and energy saving |
| CN114096050A (en) * | 2021-10-13 | 2022-02-25 | 深圳市奥金瑞科技有限公司 | Novel lighting switch system based on Bluetooth wireless ad hoc network technology |
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| Publication number | Publication date |
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| CN103379689B (en) | 2016-04-27 |
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