CN102324726B - Abnormal protection circuit of electronic ballast - Google Patents
Abnormal protection circuit of electronic ballast Download PDFInfo
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- CN102324726B CN102324726B CN 201110145602 CN201110145602A CN102324726B CN 102324726 B CN102324726 B CN 102324726B CN 201110145602 CN201110145602 CN 201110145602 CN 201110145602 A CN201110145602 A CN 201110145602A CN 102324726 B CN102324726 B CN 102324726B
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 9
- 230000001172 regenerating effect Effects 0.000 claims abstract description 37
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000032683 aging Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000007600 charging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The invention discloses an abnormal protection circuit of an electronic ballast, which comprises a working circuit of the electronic ballast, a filament circuit which consists of a tube and a voltage sampling circuit, and further comprises a triode regenerative feedback circuit, a trigger circuit which connects the working circuit with the triode regenerative feedback circuit, and a holding circuit which connects the filament circuit with the triode regenerative feedback circuit, wherein when the tube is in the abnormal state, the voltage sampling circuit sends signals to switch on the triode regenerative feedback circuit, the triode regenerative feedback circuit cuts off the working circuit through the trigger circuit, and the conducting state of the triode regenerative feedback circuit is maintained by the conducting current which is provided by the filament circuit. The abnormal protection circuit provided in the invention adopts the triode regenerative feedback circuit, the conducting state of the triode regenerative feedback circuit is maintained by the conducting current which is provided by the filament circuit, and after the old tube is replaced by a new tube, automatic lighting can be realized.
Description
Technical field
The present invention relates to a kind of charged abnormity protection circuit that changes electric ballast self-starting after fluorescent tube of realizing.
Background technology
Traditional fluorescent lamp inductance type ballast, because power factor is low, large, the temperature rise of energy consumption, a large amount of valuable copper iron resources of consumption, and exist stroboscopic and noise, now by more advanced electric ballast, substituted.Electric ballast has advantages of High Power Factor, low energy consumption, low-temperature-rise, saving copper iron resource, and, without stroboscopic and noise, also can add the functions such as light modulation, has been the main flow of illumination market at present.
When the fluorescent tube aging life-span at the end, can make electric ballast seriously transship heating and damaging, so electric ballast all has abnormity protection circuit usually.Fluorescent tube is aging while dying of old age, abnormity protection circuit moves rapidly, and electric ballast is closed and avoided it to cause damaging because of the overload heating; After changing new fluorescent tube, electric ballast still can continue normal operation; But, before more renewing fluorescent tube, abnormity protection circuit need to keep self-locking state always, otherwise there will be ballast to start the phenomenon of closing continuous repetition with abnormity protection circuit, cause fluorescent lamp repeatedly bright, go out.At present, this is the standard feature that standard compliant high-quality electric ballast possesses.Due to the self-locking maintenance of abnormity protection circuit, even after more renewing fluorescent tube, fluorescent lamp can be not bright yet, need to turn off the power supply of light fixture, 20-30 switches on again to remove the self-locking of abnormity protection circuit second excessively, and fluorescent lamp could normally be lighted.If be independent light fixture, turn off power supply after replace tubes and turn on light again, though there have inconvenience to affect to be limited.If the place of using at the fluorescent lamp cluster, as office building, market, subway, sports ground, underground parking garage etc., a switch is being controlled tens light fixtures usually, only because of the maintain and replace of several fluorescent tubes, corresponding tens light fixtures of this switch all will be extinguished, again lighting, the clerical workforce is caused to inconvenience, is also the weak point of present stage electric ballast existence.
Summary of the invention
Problem to be solved by this invention is exactly the shortcoming for existing electric ballast, proposes a kind of charged abnormity protection circuit that changes electric ballast self-starting after fluorescent tube of realizing, more renew fluorescent tube after fluorescent lamp automatically light, without turning off power supply, restart.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of electron ballast abnormality protective circuit, comprise the operating circuit of electric ballast, the filament loop formed by fluorescent tube and voltage sampling circuit, it is characterized in that: also comprise the triode regenerative circuit, connect operating circuit and triode regenerative circuit circuits for triggering, be connected the holding circuit of filament loop and triode regenerative circuit; Under the abnormal condition of lamp tube state, described voltage sampling circuit sends signal and makes the conducting of triode regenerative circuit, the triode regenerative circuit disconnects operating circuit by circuits for triggering, and the On current that the conducting state of triode regenerative circuit is provided by filament loop maintains.
Pull down filament loop after old fluorescent tube and disconnect, the no longer conducting of triode regenerative circuit, automatically terminate guard mode, and this stylish fluorescent tube just can be lighted after changing automatically, realizes the charged electric ballast self-starting function after fluorescent tube that changes.
Further, described voltage sampling circuit comprises the first inductance, the first diode, the second diode, the first resistance, the second resistance, the 3rd resistance, electrochemical capacitor, the voltage-stabiliser tube connected successively; The elementary connection filament loop of described the first inductance, the first diode and the second diodes in parallel are on the first inductance secondary.
Further, described triode regenerative circuit comprises the first triode and the second triode, and the C pin that the B pin of the first triode connects the C pin of the second triode, the first triode connects the B pin of the second triode.
Further, described circuits for triggering are comprised of the 3rd diode be connected in series and the 4th diode; The 3rd diode connecting triode regenerative circuit, the operating circuit of the 4th diode access electric ballast.
Further, described holding circuit is comprised of the second inductance and the 4th resistance, elementary connection first inductance of described the second inductance elementary, and the 4th resistance is connected between the 4th diode in the secondary and circuits for triggering of the second inductance.
Beneficial effect of the present invention: traditional abnormity protection circuit adopts not conducting of controllable silicon under the ghyristor circuit normal operating conditions usually; When the abnormal condition of lamp tube state; the sample circuit output signal triggers controlled silicon conducting and closes electric ballast; because controllable silicon has the self-sustaining characteristic; under powering state, guard mode is kept by self-locking; change the also still self-locking maintenance of new fluorescent tube even pull down old fluorescent tube; cut off the power supply and within tens seconds, remove self-locking and switch on, fluorescent lamp just can be lighted.But abnormity protection circuit provided by the present invention adopts the triode regenerative circuit; the electric current that its conducting state is provided by filament loop maintains; old fluorescent tube is changed, new fluorescent tube can be lighted after changing automatically; this function brings great convenience to illumination installation, debugging and maintenance; especially be applied in the cluster illuminator; beneficial effect fruit is particularly evident, has avoided turning off power supply and extinguishes trouble and the inconvenience that a bank light is lighted again.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is fundamental diagram of the present invention;
Fig. 2 is circuit diagram of the present invention.
Embodiment
With reference to Fig. 1, a kind of electron ballast abnormality protective circuit of the present invention, comprise the operating circuit 1 of electric ballast, the filament loop 2 formed by fluorescent tube and voltage sampling circuit 3, triode regenerative circuit 4, connect operating circuit 1 and triode regenerative circuit 4 circuits for triggering 5, be connected the holding circuit 6 of filament loop 2 and triode regenerative circuit 4; Under the abnormal condition of lamp tube state, described voltage sampling circuit 3 sends signal and makes 4 conductings of triode regenerative circuit, triode regenerative circuit 4 disconnects operating circuit 1 by circuits for triggering 5, and the On current that the conducting state of triode regenerative circuit 4 is provided by filament loop 2 maintains.
With reference to Fig. 2, the concrete structure of circuit diagram is as follows: voltage sampling circuit 3 comprises the first inductance L 1, the first diode D1, the second diode D2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, electrochemical capacitor E, the voltage-stabiliser tube DZ connected successively; Elementary connection filament loop 2, the first diode D1 of described the first inductance L 1 and the second diode D2 are connected in parallel on the first inductance L 1 secondary;
Triode regenerative circuit 4 comprises the first triode Q1 and the second triode Q2, and the B pin of the first triode Q1 connects the C pin of the second triode Q2, the C pin of the first triode Q1 connects the B pin of the second triode Q2;
Circuits for triggering 5 are comprised of the 3rd diode D3 be connected in series and the 4th diode D4; The operating circuit 1 of the 3rd diode D3 connecting triode regenerative circuit 4, the four diode D4 access electric ballasts.
Holding circuit 6 is comprised of the second inductance L 2 and the 4th resistance R 4, elementary connection first inductance L 1 of described the second inductance L 2 elementary, and the 4th resistance R 4 is connected between the 4th diode D4 in the secondary and circuits for triggering 5 of the second inductance L 2.
Operation principle:
When the abnormal condition of lamp tube state, as aging as fluorescent tube can't starter, light tube electric voltage is higher than normal value, now the first inductance L 1 is through the first diode D1, the second diode D2, the first resistance R 1, the second resistance R 2, the voltage that the 3rd resistance R 3 forms at electrochemical capacitor E is greater than the voltage stabilizing value of voltage-stabiliser tube DZ, the conducting of voltage-stabiliser tube DZ, then make the first triode Q1 conducting, the C pin current potential of the first triode Q1 reduces makes the second triode Q2 conducting, make the further conducting of the first triode Q1 after the second triode Q2 conducting, the first triode Q1 and the mutual positive feedback of the second triode Q2 cause two to manage all saturation conductions.
After 4 conductings of triode regenerative circuit, close the 3rd triode Q3 in operating circuit 1 by the 3rd diode D3, electrochemical capacitor E, the 3rd resistance R 3 on the one hand, electric ballast quits work; By the 4th diode D4, the electric charge of the thin-film capacitor C in operating circuit 1 is discharged on the other hand, avoid trigger tube again to start electric ballast.
After the 3rd triode Q3 closes, operating circuit 1 is in guard mode, at this moment electric current injects triode regenerative circuit 4 through two pins, the 6th resistance R 6, two pins of fluorescent tube right-hand member, the first inductance L 1, the second inductance L 2, the 4th resistance R 4, the 4th diode D4 of the 5th resistance R 5, fluorescent tube left end, maintains its saturation conduction state; Filament loop 2 is comprised of pin and the 6th resistance R 6 of lamp tube ends.
Take off aging fluorescent tube; filament loop 2 disconnects and no longer provides the triode regenerative circuit 4 On currents; operating circuit 1 guard mode is removed; at this moment change new fluorescent tube; electric current is by the 5th resistance R 5, two pins of fluorescent tube left end, the 6th resistance R 6, two pins of fluorescent tube right-hand member, the first inductance L 1, the second inductance L 2,4 pairs of thin-film capacitor C chargings of the 4th resistance R; until surpass the conducting voltage of trigger tube, trigger the 3rd triode Q3 conducting ballast is reworked.
No matter be independent use; or locating cluster as office building, market, subway, sports ground, underground parking garage etc. uses; abnormity protection circuit is closed several light fixtures that electric ballast self-locking extinguish without outage; as long as take off simply aging old fluorescent tube and load onto new fluorescent tube, fluorescent lamp is lighted automatically again.
Those skilled in the art can make according to the present invention various changes and distortion, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (1)
1. an electron ballast abnormality protective circuit, comprise the operating circuit (1) of electric ballast, the filament loop (2) formed by fluorescent tube and voltage sampling circuit (3), it is characterized in that: also comprise triode regenerative circuit (4), connect operating circuit (1) and triode regenerative circuit (4) circuits for triggering (5), be connected the holding circuit (6) of filament loop (2) and triode regenerative circuit (4), under the abnormal condition of lamp tube state, described voltage sampling circuit (3) sends signal and makes triode regenerative circuit (4) conducting, triode regenerative circuit (4) disconnects operating circuit (1) by circuits for triggering (5), the On current that the conducting state of triode regenerative circuit (4) is provided by filament loop (2) maintains, described voltage sampling circuit (3) comprises the first inductance (L1) connected successively, the first diode (D1), the second diode (D2), the first resistance (R1), the second resistance (R2), the 3rd resistance (R3), electrochemical capacitor (E), voltage-stabiliser tube (DZ), the elementary connection filament loop (2) of described the first inductance (L1), the first diode (D1) and the second diode (D2) are connected in parallel on the first inductance (L1) secondary, described triode regenerative circuit (4) comprises the first triode (Q1) and the second triode (Q2), the B pin of the first triode (Q1) connects the C pin of the second triode (Q2), the C pin of the first triode (Q1) connects the B pin of the second triode (Q2), and described circuits for triggering (5) are comprised of the 3rd diode (D3) be connected in series and the 4th diode (D4), the 3rd diode (D3) connecting triode regenerative circuit (4), the operating circuit (1) of the 4th diode (D4) access electric ballast, described holding circuit (6) is comprised of the second inductance (L2) and the 4th resistance, elementary connection first inductance (L1) of described the second inductance (L2) elementary, the 4th resistance is connected between the 4th diode (D4) in the secondary and circuits for triggering (5) of the second inductance (L2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110145602 CN102324726B (en) | 2011-05-31 | 2011-05-31 | Abnormal protection circuit of electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110145602 CN102324726B (en) | 2011-05-31 | 2011-05-31 | Abnormal protection circuit of electronic ballast |
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| Publication Number | Publication Date |
|---|---|
| CN102324726A CN102324726A (en) | 2012-01-18 |
| CN102324726B true CN102324726B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110145602 Expired - Fee Related CN102324726B (en) | 2011-05-31 | 2011-05-31 | Abnormal protection circuit of electronic ballast |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163066A (en) * | 2015-03-19 | 2016-11-23 | 李少华 | Electronic ballast protecting circuit |
| CN106385207B (en) * | 2016-11-11 | 2019-01-15 | 江苏天行健汽车科技有限公司 | A kind of the control system for non-brush direct currunt electromotors preventing accidental activation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1642381A (en) * | 2004-01-05 | 2005-07-20 | 黄甜仔 | Anormal-state protection apparatus of self-recovering electronic ballast |
| CN1845651A (en) * | 2006-03-21 | 2006-10-11 | 横店得邦电子有限公司 | Positive feedback abnormal protection circuit |
| CN200994221Y (en) * | 2006-11-30 | 2007-12-19 | 惠州Tcl照明电器有限公司 | Abnormal protection circuit for electronic ballast |
| CN101848593A (en) * | 2010-05-27 | 2010-09-29 | 海洋王照明科技股份有限公司 | Abnormal electronic ballast state protection circuit, electronic ballast and lamp |
| CN202059156U (en) * | 2011-05-31 | 2011-11-30 | 缪仙荣 | Electronic ballast abnormity protection circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7956548B2 (en) * | 2009-04-08 | 2011-06-07 | Kanghong Zhang | Electronic ballast protection |
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- 2011-05-31 CN CN 201110145602 patent/CN102324726B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1642381A (en) * | 2004-01-05 | 2005-07-20 | 黄甜仔 | Anormal-state protection apparatus of self-recovering electronic ballast |
| CN1845651A (en) * | 2006-03-21 | 2006-10-11 | 横店得邦电子有限公司 | Positive feedback abnormal protection circuit |
| CN200994221Y (en) * | 2006-11-30 | 2007-12-19 | 惠州Tcl照明电器有限公司 | Abnormal protection circuit for electronic ballast |
| CN101848593A (en) * | 2010-05-27 | 2010-09-29 | 海洋王照明科技股份有限公司 | Abnormal electronic ballast state protection circuit, electronic ballast and lamp |
| CN202059156U (en) * | 2011-05-31 | 2011-11-30 | 缪仙荣 | Electronic ballast abnormity protection circuit |
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| CN102324726A (en) | 2012-01-18 |
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| C14 | Grant of patent or utility model | ||
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Owner name: CHANGXING YOUBANG ELECTRIC APPLIANCES CO., LTD. Free format text: FORMER OWNER: MIAO XIANRONG Effective date: 20140408 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140408 Address after: 313112 No. 9 Huaxing West Road, Lin Cheng Industrial Zone, Huzhou, Zhejiang, Changxing County Patentee after: Changxing Youbang Electric Appliance Co., Ltd. Address before: 313112 Changxin Huzhou hi tech Electrical Appliance Co., Ltd., No. 9 Huaxing West Road, Changxing County Lin Cheng Industrial Zone, Zhejiang, China Patentee before: Jiu Xianrong |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20170531 |
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| CF01 | Termination of patent right due to non-payment of annual fee |